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1 *eval.txt* For Vim version 7.0aa. Last change: 2005 Sep 05
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4 VIM REFERENCE MANUAL by Bram Moolenaar
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7 Expression evaluation *expression* *expr* *E15* *eval*
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9 Using expressions is introduced in chapter 41 of the user manual |usr_41.txt|.
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11 Note: Expression evaluation can be disabled at compile time. If this has been
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12 done, the features in this document are not available. See |+eval| and
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13 |no-eval-feature|.
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14
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15 1. Variables |variables|
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16 1.1 Variable types
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17 1.2 Function references |Funcref|
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18 1.3 Lists |Lists|
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19 1.4 Dictionaries |Dictionaries|
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20 1.5 More about variables |more-variables|
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21 2. Expression syntax |expression-syntax|
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22 3. Internal variable |internal-variables|
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23 4. Builtin Functions |functions|
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24 5. Defining functions |user-functions|
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25 6. Curly braces names |curly-braces-names|
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26 7. Commands |expression-commands|
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27 8. Exception handling |exception-handling|
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28 9. Examples |eval-examples|
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29 10. No +eval feature |no-eval-feature|
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30 11. The sandbox |eval-sandbox|
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31
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32 {Vi does not have any of these commands}
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33
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34 ==============================================================================
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35 1. Variables *variables*
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36
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37 1.1 Variable types ~
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38 *E712*
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39 There are five types of variables:
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40
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41 Number A 32 bit signed number.
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42 Examples: -123 0x10 0177
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43
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44 String A NUL terminated string of 8-bit unsigned characters (bytes).
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45 Examples: "ab\txx\"--" 'x-z''a,c'
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46
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47 Funcref A reference to a function |Funcref|.
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48 Example: function("strlen")
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49
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50 List An ordered sequence of items |List|.
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51 Example: [1, 2, ['a', 'b']]
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52
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53 Dictionary An associative, unordered array: Each entry has a key and a
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54 value. |Dictionary|
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55 Example: {'blue': "#0000ff", 'red': "#ff0000"}
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56
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57 The Number and String types are converted automatically, depending on how they
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58 are used.
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59
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60 Conversion from a Number to a String is by making the ASCII representation of
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61 the Number. Examples: >
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62 Number 123 --> String "123"
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63 Number 0 --> String "0"
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64 Number -1 --> String "-1"
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65
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66 Conversion from a String to a Number is done by converting the first digits
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67 to a number. Hexadecimal "0xf9" and Octal "017" numbers are recognized. If
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68 the String doesn't start with digits, the result is zero. Examples: >
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69 String "456" --> Number 456
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70 String "6bar" --> Number 6
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71 String "foo" --> Number 0
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72 String "0xf1" --> Number 241
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73 String "0100" --> Number 64
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74 String "-8" --> Number -8
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75 String "+8" --> Number 0
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76
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77 To force conversion from String to Number, add zero to it: >
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78 :echo "0100" + 0
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79
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80 For boolean operators Numbers are used. Zero is FALSE, non-zero is TRUE.
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81
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82 Note that in the command >
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83 :if "foo"
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84 "foo" is converted to 0, which means FALSE. To test for a non-empty string,
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85 use strlen(): >
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86 :if strlen("foo")
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87 < *E745* *E728* *E703* *E729* *E730* *E731*
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88 List, Dictionary and Funcref types are not automatically converted.
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89
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90 *E706*
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91 You will get an error if you try to change the type of a variable. You need
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92 to |:unlet| it first to avoid this error. String and Number are considered
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93 equivalent though. Consider this sequence of commands: >
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94 :let l = "string"
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95 :let l = 44 " changes type from String to Number
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96 :let l = [1, 2, 3] " error!
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97
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98
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99 1.2 Function references ~
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100 *Funcref* *E695* *E718*
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101 A Funcref variable is obtained with the |function()| function. It can be used
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102 in an expression in the place of a function name, before the parenthesis
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103 around the arguments, to invoke the function it refers to. Example: >
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104
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105 :let Fn = function("MyFunc")
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106 :echo Fn()
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107 < *E704* *E705* *E707*
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108 A Funcref variable must start with a capital, "s:", "w:" or "b:". You cannot
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109 have both a Funcref variable and a function with the same name.
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110
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111 A special case is defining a function and directly assigning its Funcref to a
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112 Dictionary entry. Example: >
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113 :function dict.init() dict
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114 : let self.val = 0
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115 :endfunction
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116
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117 The key of the Dictionary can start with a lower case letter. The actual
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118 function name is not used here. Also see |numbered-function|.
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119
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120 A Funcref can also be used with the |:call| command: >
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121 :call Fn()
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122 :call dict.init()
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123
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124 The name of the referenced function can be obtained with |string()|. >
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119
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125 :let func = string(Fn)
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126
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127 You can use |call()| to invoke a Funcref and use a list variable for the
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128 arguments: >
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129 :let r = call(Fn, mylist)
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130
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131
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132 1.3 Lists ~
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133 *List* *Lists* *E686*
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134 A List is an ordered sequence of items. An item can be of any type. Items
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135 can be accessed by their index number. Items can be added and removed at any
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136 position in the sequence.
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137
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138
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139 List creation ~
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140 *E696* *E697*
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141 A List is created with a comma separated list of items in square brackets.
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142 Examples: >
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143 :let mylist = [1, two, 3, "four"]
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144 :let emptylist = []
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145
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146 An item can be any expression. Using a List for an item creates a
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147 nested List: >
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148 :let nestlist = [[11, 12], [21, 22], [31, 32]]
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149
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150 An extra comma after the last item is ignored.
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151
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152
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153 List index ~
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154 *list-index* *E684*
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155 An item in the List can be accessed by putting the index in square brackets
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156 after the List. Indexes are zero-based, thus the first item has index zero. >
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157 :let item = mylist[0] " get the first item: 1
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158 :let item = mylist[2] " get the third item: 3
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159
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160 When the resulting item is a list this can be repeated: >
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161 :let item = nestlist[0][1] " get the first list, second item: 12
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162 <
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163 A negative index is counted from the end. Index -1 refers to the last item in
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164 the List, -2 to the last but one item, etc. >
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165 :let last = mylist[-1] " get the last item: "four"
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166
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167 To avoid an error for an invalid index use the |get()| function. When an item
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168 is not available it returns zero or the default value you specify: >
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169 :echo get(mylist, idx)
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170 :echo get(mylist, idx, "NONE")
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171
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172
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173 List concatenation ~
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174
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175 Two lists can be concatenated with the "+" operator: >
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176 :let longlist = mylist + [5, 6]
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177 :let mylist += [7, 8]
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178
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179 To prepend or append an item turn the item into a list by putting [] around
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180 it. To change a list in-place see |list-modification| below.
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181
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182
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183 Sublist ~
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184
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185 A part of the List can be obtained by specifying the first and last index,
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186 separated by a colon in square brackets: >
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187 :let shortlist = mylist[2:-1] " get List [3, "four"]
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188
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189 Omitting the first index is similar to zero. Omitting the last index is
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190 similar to -1. The difference is that there is no error if the items are not
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191 available. >
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192 :let endlist = mylist[2:] " from item 2 to the end: [3, "four"]
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193 :let shortlist = mylist[2:2] " List with one item: [3]
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194 :let otherlist = mylist[:] " make a copy of the List
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195
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196 The second index can be just before the first index. In that case the result
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197 is an empty list. If the second index is lower, this results in an error. >
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198 :echo mylist[2:1] " result: []
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199 :echo mylist[2:0] " error!
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200
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201 NOTE: mylist[s:e] means using the variable "s:e" as index. Watch out for
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202 using a single letter variable before the ":". Insert a space when needed:
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203 mylist[s : e].
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204
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205
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206 List identity ~
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207 *list-identity*
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208 When variable "aa" is a list and you assign it to another variable "bb", both
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209 variables refer to the same list. Thus changing the list "aa" will also
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210 change "bb": >
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211 :let aa = [1, 2, 3]
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212 :let bb = aa
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213 :call add(aa, 4)
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214 :echo bb
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215 < [1, 2, 3, 4]
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216
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217 Making a copy of a list is done with the |copy()| function. Using [:] also
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218 works, as explained above. This creates a shallow copy of the list: Changing
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219 a list item in the list will also change the item in the copied list: >
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220 :let aa = [[1, 'a'], 2, 3]
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221 :let bb = copy(aa)
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222 :call add(aa, 4)
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223 :let aa[0][1] = 'aaa'
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224 :echo aa
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225 < [[1, aaa], 2, 3, 4] >
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226 :echo bb
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227 < [[1, aaa], 2, 3]
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228
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229 To make a completely independent list use |deepcopy()|. This also makes a
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230 copy of the values in the list, recursively. Up to a hundred levels deep.
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231
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232 The operator "is" can be used to check if two variables refer to the same
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233 List. "isnot" does the opposite. In contrast "==" compares if two lists have
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234 the same value. >
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235 :let alist = [1, 2, 3]
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236 :let blist = [1, 2, 3]
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237 :echo alist is blist
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238 < 0 >
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239 :echo alist == blist
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240 < 1
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241
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323
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242 Note about comparing lists: Two lists are considered equal if they have the
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243 same length and all items compare equal, as with using "==". There is one
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244 exception: When comparing a number with a string they are considered
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245 different. There is no automatic type conversion, as with using "==" on
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246 variables. Example: >
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247 echo 4 == "4"
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248 < 1 >
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249 echo [4] == ["4"]
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250 < 0
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251
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252 Thus comparing Lists is more strict than comparing numbers and strings. You
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253 can compare simple values this way too by putting them in a string: >
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254
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255 :let a = 5
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256 :let b = "5"
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257 echo a == b
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258 < 1 >
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259 echo [a] == [b]
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260 < 0
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261
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262
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263 List unpack ~
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264
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265 To unpack the items in a list to individual variables, put the variables in
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266 square brackets, like list items: >
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267 :let [var1, var2] = mylist
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268
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269 When the number of variables does not match the number of items in the list
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270 this produces an error. To handle any extra items from the list append ";"
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271 and a variable name: >
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272 :let [var1, var2; rest] = mylist
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273
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274 This works like: >
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275 :let var1 = mylist[0]
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276 :let var2 = mylist[1]
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277 :let rest = mylist[2:]
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278
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279 Except that there is no error if there are only two items. "rest" will be an
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280 empty list then.
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281
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282
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283 List modification ~
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284 *list-modification*
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285 To change a specific item of a list use |:let| this way: >
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286 :let list[4] = "four"
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287 :let listlist[0][3] = item
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288
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289 To change part of a list you can specify the first and last item to be
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290 modified. The value must at least have the number of items in the range: >
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291 :let list[3:5] = [3, 4, 5]
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292
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293 Adding and removing items from a list is done with functions. Here are a few
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294 examples: >
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295 :call insert(list, 'a') " prepend item 'a'
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296 :call insert(list, 'a', 3) " insert item 'a' before list[3]
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297 :call add(list, "new") " append String item
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298 :call add(list, [1, 2]) " append a List as one new item
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299 :call extend(list, [1, 2]) " extend the list with two more items
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300 :let i = remove(list, 3) " remove item 3
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301 :unlet list[3] " idem
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302 :let l = remove(list, 3, -1) " remove items 3 to last item
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108
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303 :unlet list[3 : ] " idem
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304 :call filter(list, 'v:val !~ "x"') " remove items with an 'x'
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305
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306 Changing the order of items in a list: >
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307 :call sort(list) " sort a list alphabetically
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308 :call reverse(list) " reverse the order of items
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309
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310
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311 For loop ~
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312
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313 The |:for| loop executes commands for each item in a list. A variable is set
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314 to each item in the list in sequence. Example: >
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315 :for item in mylist
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316 : call Doit(item)
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317 :endfor
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318
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319 This works like: >
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320 :let index = 0
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321 :while index < len(mylist)
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322 : let item = mylist[index]
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323 : :call Doit(item)
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324 : let index = index + 1
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325 :endwhile
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326
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327 Note that all items in the list should be of the same type, otherwise this
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328 results in error |E706|. To avoid this |:unlet| the variable at the end of
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329 the loop.
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330
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331 If all you want to do is modify each item in the list then the |map()|
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332 function will be a simpler method than a for loop.
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333
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334 Just like the |:let| command, |:for| also accepts a list of variables. This
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335 requires the argument to be a list of lists. >
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336 :for [lnum, col] in [[1, 3], [2, 8], [3, 0]]
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337 : call Doit(lnum, col)
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338 :endfor
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339
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340 This works like a |:let| command is done for each list item. Again, the types
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341 must remain the same to avoid an error.
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342
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343 It is also possible to put remaining items in a List variable: >
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344 :for [i, j; rest] in listlist
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345 : call Doit(i, j)
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346 : if !empty(rest)
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347 : echo "remainder: " . string(rest)
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348 : endif
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349 :endfor
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350
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351
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352 List functions ~
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353 *E714*
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354 Functions that are useful with a List: >
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87
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355 :let r = call(funcname, list) " call a function with an argument list
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356 :if empty(list) " check if list is empty
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102
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357 :let l = len(list) " number of items in list
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358 :let big = max(list) " maximum value in list
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359 :let small = min(list) " minimum value in list
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87
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360 :let xs = count(list, 'x') " count nr of times 'x' appears in list
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361 :let i = index(list, 'x') " index of first 'x' in list
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362 :let lines = getline(1, 10) " get ten text lines from buffer
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363 :call append('$', lines) " append text lines in buffer
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364 :let list = split("a b c") " create list from items in a string
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365 :let string = join(list, ', ') " create string from list items
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102
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366 :let s = string(list) " String representation of list
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367 :call map(list, '">> " . v:val') " prepend ">> " to each item
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368
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258
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369 Don't forget that a combination of features can make things simple. For
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370 example, to add up all the numbers in a list: >
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371 :exe 'let sum = ' . join(nrlist, '+')
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372
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99
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373
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374 1.4 Dictionaries ~
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114
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375 *Dictionaries* *Dictionary*
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99
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376 A Dictionary is an associative array: Each entry has a key and a value. The
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114
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377 entry can be located with the key. The entries are stored without a specific
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378 ordering.
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99
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379
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380
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381 Dictionary creation ~
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114
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382 *E720* *E721* *E722* *E723*
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99
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383 A Dictionary is created with a comma separated list of entries in curly
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114
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384 braces. Each entry has a key and a value, separated by a colon. Each key can
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385 only appear once. Examples: >
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99
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386 :let mydict = {1: 'one', 2: 'two', 3: 'three'}
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387 :let emptydict = {}
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114
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388 < *E713* *E716* *E717*
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99
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389 A key is always a String. You can use a Number, it will be converted to a
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390 String automatically. Thus the String '4' and the number 4 will find the same
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114
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391 entry. Note that the String '04' and the Number 04 are different, since the
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392 Number will be converted to the String '4'.
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393
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394 A value can be any expression. Using a Dictionary for a value creates a
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99
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395 nested Dictionary: >
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396 :let nestdict = {1: {11: 'a', 12: 'b'}, 2: {21: 'c'}}
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397
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398 An extra comma after the last entry is ignored.
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399
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400
|
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401 Accessing entries ~
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402
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403 The normal way to access an entry is by putting the key in square brackets: >
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404 :let val = mydict["one"]
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405 :let mydict["four"] = 4
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406
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114
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407 You can add new entries to an existing Dictionary this way, unlike Lists.
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99
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408
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|
409 For keys that consist entirely of letters, digits and underscore the following
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410 form can be used |expr-entry|: >
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411 :let val = mydict.one
|
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|
412 :let mydict.four = 4
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413
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414 Since an entry can be any type, also a List and a Dictionary, the indexing and
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415 key lookup can be repeated: >
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114
|
416 :echo dict.key[idx].key
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99
|
417
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418
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419 Dictionary to List conversion ~
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420
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421 You may want to loop over the entries in a dictionary. For this you need to
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422 turn the Dictionary into a List and pass it to |:for|.
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423
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424 Most often you want to loop over the keys, using the |keys()| function: >
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425 :for key in keys(mydict)
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|
|
426 : echo key . ': ' . mydict[key]
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|
427 :endfor
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428
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429 The List of keys is unsorted. You may want to sort them first: >
|
|
|
430 :for key in sort(keys(mydict))
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431
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432 To loop over the values use the |values()| function: >
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433 :for v in values(mydict)
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434 : echo "value: " . v
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435 :endfor
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436
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437 If you want both the key and the value use the |items()| function. It returns
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114
|
438 a List in which each item is a List with two items, the key and the value: >
|
|
99
|
439 :for entry in items(mydict)
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440 : echo entry[0] . ': ' . entry[1]
|
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441 :endfor
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442
|
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443
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|
444 Dictionary identity ~
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161
|
445 *dict-identity*
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99
|
446 Just like Lists you need to use |copy()| and |deepcopy()| to make a copy of a
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447 Dictionary. Otherwise, assignment results in referring to the same
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448 Dictionary: >
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|
449 :let onedict = {'a': 1, 'b': 2}
|
|
|
450 :let adict = onedict
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|
451 :let adict['a'] = 11
|
|
|
452 :echo onedict['a']
|
|
|
453 11
|
|
|
454
|
|
327
|
455 Two Dictionaries compare equal if all the key-value pairs compare equal. For
|
|
|
456 more info see |list-identity|.
|
|
99
|
457
|
|
|
458
|
|
|
459 Dictionary modification ~
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|
|
460 *dict-modification*
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|
|
461 To change an already existing entry of a Dictionary, or to add a new entry,
|
|
|
462 use |:let| this way: >
|
|
|
463 :let dict[4] = "four"
|
|
|
464 :let dict['one'] = item
|
|
|
465
|
|
108
|
466 Removing an entry from a Dictionary is done with |remove()| or |:unlet|.
|
|
|
467 Three ways to remove the entry with key "aaa" from dict: >
|
|
|
468 :let i = remove(dict, 'aaa')
|
|
|
469 :unlet dict.aaa
|
|
|
470 :unlet dict['aaa']
|
|
99
|
471
|
|
|
472 Merging a Dictionary with another is done with |extend()|: >
|
|
114
|
473 :call extend(adict, bdict)
|
|
|
474 This extends adict with all entries from bdict. Duplicate keys cause entries
|
|
|
475 in adict to be overwritten. An optional third argument can change this.
|
|
119
|
476 Note that the order of entries in a Dictionary is irrelevant, thus don't
|
|
|
477 expect ":echo adict" to show the items from bdict after the older entries in
|
|
|
478 adict.
|
|
99
|
479
|
|
|
480 Weeding out entries from a Dictionary can be done with |filter()|: >
|
|
205
|
481 :call filter(dict 'v:val =~ "x"')
|
|
114
|
482 This removes all entries from "dict" with a value not matching 'x'.
|
|
102
|
483
|
|
|
484
|
|
|
485 Dictionary function ~
|
|
114
|
486 *Dictionary-function* *self* *E725*
|
|
102
|
487 When a function is defined with the "dict" attribute it can be used in a
|
|
|
488 special way with a dictionary. Example: >
|
|
|
489 :function Mylen() dict
|
|
114
|
490 : return len(self.data)
|
|
102
|
491 :endfunction
|
|
114
|
492 :let mydict = {'data': [0, 1, 2, 3], 'len': function("Mylen")}
|
|
|
493 :echo mydict.len()
|
|
102
|
494
|
|
|
495 This is like a method in object oriented programming. The entry in the
|
|
|
496 Dictionary is a |Funcref|. The local variable "self" refers to the dictionary
|
|
|
497 the function was invoked from.
|
|
|
498
|
|
114
|
499 It is also possible to add a function without the "dict" attribute as a
|
|
|
500 Funcref to a Dictionary, but the "self" variable is not available then.
|
|
|
501
|
|
|
502 *numbered-function*
|
|
102
|
503 To avoid the extra name for the function it can be defined and directly
|
|
|
504 assigned to a Dictionary in this way: >
|
|
114
|
505 :let mydict = {'data': [0, 1, 2, 3]}
|
|
|
506 :function mydict.len() dict
|
|
|
507 : return len(self.data)
|
|
102
|
508 :endfunction
|
|
114
|
509 :echo mydict.len()
|
|
|
510
|
|
|
511 The function will then get a number and the value of dict.len is a |Funcref|
|
|
|
512 that references this function. The function can only be used through a
|
|
|
513 |Funcref|. It will automatically be deleted when there is no |Funcref|
|
|
|
514 remaining that refers to it.
|
|
|
515
|
|
|
516 It is not necessary to use the "dict" attribute for a numbered function.
|
|
102
|
517
|
|
|
518
|
|
|
519 Functions for Dictionaries ~
|
|
114
|
520 *E715*
|
|
|
521 Functions that can be used with a Dictionary: >
|
|
102
|
522 :if has_key(dict, 'foo') " TRUE if dict has entry with key "foo"
|
|
|
523 :if empty(dict) " TRUE if dict is empty
|
|
|
524 :let l = len(dict) " number of items in dict
|
|
|
525 :let big = max(dict) " maximum value in dict
|
|
|
526 :let small = min(dict) " minimum value in dict
|
|
|
527 :let xs = count(dict, 'x') " count nr of times 'x' appears in dict
|
|
|
528 :let s = string(dict) " String representation of dict
|
|
|
529 :call map(dict, '">> " . v:val') " prepend ">> " to each item
|
|
99
|
530
|
|
|
531
|
|
|
532 1.5 More about variables ~
|
|
85
|
533 *more-variables*
|
|
7
|
534 If you need to know the type of a variable or expression, use the |type()|
|
|
|
535 function.
|
|
|
536
|
|
|
537 When the '!' flag is included in the 'viminfo' option, global variables that
|
|
|
538 start with an uppercase letter, and don't contain a lowercase letter, are
|
|
|
539 stored in the viminfo file |viminfo-file|.
|
|
|
540
|
|
|
541 When the 'sessionoptions' option contains "global", global variables that
|
|
|
542 start with an uppercase letter and contain at least one lowercase letter are
|
|
|
543 stored in the session file |session-file|.
|
|
|
544
|
|
|
545 variable name can be stored where ~
|
|
|
546 my_var_6 not
|
|
|
547 My_Var_6 session file
|
|
|
548 MY_VAR_6 viminfo file
|
|
|
549
|
|
|
550
|
|
|
551 It's possible to form a variable name with curly braces, see
|
|
|
552 |curly-braces-names|.
|
|
|
553
|
|
|
554 ==============================================================================
|
|
|
555 2. Expression syntax *expression-syntax*
|
|
|
556
|
|
|
557 Expression syntax summary, from least to most significant:
|
|
|
558
|
|
|
559 |expr1| expr2 ? expr1 : expr1 if-then-else
|
|
|
560
|
|
|
561 |expr2| expr3 || expr3 .. logical OR
|
|
|
562
|
|
|
563 |expr3| expr4 && expr4 .. logical AND
|
|
|
564
|
|
|
565 |expr4| expr5 == expr5 equal
|
|
|
566 expr5 != expr5 not equal
|
|
|
567 expr5 > expr5 greater than
|
|
|
568 expr5 >= expr5 greater than or equal
|
|
|
569 expr5 < expr5 smaller than
|
|
|
570 expr5 <= expr5 smaller than or equal
|
|
|
571 expr5 =~ expr5 regexp matches
|
|
|
572 expr5 !~ expr5 regexp doesn't match
|
|
|
573
|
|
|
574 expr5 ==? expr5 equal, ignoring case
|
|
|
575 expr5 ==# expr5 equal, match case
|
|
|
576 etc. As above, append ? for ignoring case, # for
|
|
|
577 matching case
|
|
|
578
|
|
79
|
579 expr5 is expr5 same List instance
|
|
|
580 expr5 isnot expr5 different List instance
|
|
|
581
|
|
|
582 |expr5| expr6 + expr6 .. number addition or list concatenation
|
|
7
|
583 expr6 - expr6 .. number subtraction
|
|
|
584 expr6 . expr6 .. string concatenation
|
|
|
585
|
|
|
586 |expr6| expr7 * expr7 .. number multiplication
|
|
|
587 expr7 / expr7 .. number division
|
|
|
588 expr7 % expr7 .. number modulo
|
|
|
589
|
|
|
590 |expr7| ! expr7 logical NOT
|
|
|
591 - expr7 unary minus
|
|
|
592 + expr7 unary plus
|
|
102
|
593
|
|
|
594
|
|
|
595 |expr8| expr8[expr1] byte of a String or item of a List
|
|
|
596 expr8[expr1 : expr1] substring of a String or sublist of a List
|
|
|
597 expr8.name entry in a Dictionary
|
|
|
598 expr8(expr1, ...) function call with Funcref variable
|
|
|
599
|
|
|
600 |expr9| number number constant
|
|
26
|
601 "string" string constant, backslash is special
|
|
99
|
602 'string' string constant, ' is doubled
|
|
55
|
603 [expr1, ...] List
|
|
102
|
604 {expr1: expr1, ...} Dictionary
|
|
7
|
605 &option option value
|
|
|
606 (expr1) nested expression
|
|
|
607 variable internal variable
|
|
|
608 va{ria}ble internal variable with curly braces
|
|
|
609 $VAR environment variable
|
|
|
610 @r contents of register 'r'
|
|
|
611 function(expr1, ...) function call
|
|
|
612 func{ti}on(expr1, ...) function call with curly braces
|
|
|
613
|
|
|
614
|
|
|
615 ".." indicates that the operations in this level can be concatenated.
|
|
|
616 Example: >
|
|
|
617 &nu || &list && &shell == "csh"
|
|
|
618
|
|
|
619 All expressions within one level are parsed from left to right.
|
|
|
620
|
|
|
621
|
|
|
622 expr1 *expr1* *E109*
|
|
|
623 -----
|
|
|
624
|
|
|
625 expr2 ? expr1 : expr1
|
|
|
626
|
|
|
627 The expression before the '?' is evaluated to a number. If it evaluates to
|
|
|
628 non-zero, the result is the value of the expression between the '?' and ':',
|
|
|
629 otherwise the result is the value of the expression after the ':'.
|
|
|
630 Example: >
|
|
|
631 :echo lnum == 1 ? "top" : lnum
|
|
|
632
|
|
|
633 Since the first expression is an "expr2", it cannot contain another ?:. The
|
|
|
634 other two expressions can, thus allow for recursive use of ?:.
|
|
|
635 Example: >
|
|
|
636 :echo lnum == 1 ? "top" : lnum == 1000 ? "last" : lnum
|
|
|
637
|
|
|
638 To keep this readable, using |line-continuation| is suggested: >
|
|
|
639 :echo lnum == 1
|
|
|
640 :\ ? "top"
|
|
|
641 :\ : lnum == 1000
|
|
|
642 :\ ? "last"
|
|
|
643 :\ : lnum
|
|
|
644
|
|
|
645
|
|
|
646 expr2 and expr3 *expr2* *expr3*
|
|
|
647 ---------------
|
|
|
648
|
|
|
649 *expr-barbar* *expr-&&*
|
|
|
650 The "||" and "&&" operators take one argument on each side. The arguments
|
|
|
651 are (converted to) Numbers. The result is:
|
|
|
652
|
|
|
653 input output ~
|
|
|
654 n1 n2 n1 || n2 n1 && n2 ~
|
|
|
655 zero zero zero zero
|
|
|
656 zero non-zero non-zero zero
|
|
|
657 non-zero zero non-zero zero
|
|
|
658 non-zero non-zero non-zero non-zero
|
|
|
659
|
|
|
660 The operators can be concatenated, for example: >
|
|
|
661
|
|
|
662 &nu || &list && &shell == "csh"
|
|
|
663
|
|
|
664 Note that "&&" takes precedence over "||", so this has the meaning of: >
|
|
|
665
|
|
|
666 &nu || (&list && &shell == "csh")
|
|
|
667
|
|
|
668 Once the result is known, the expression "short-circuits", that is, further
|
|
|
669 arguments are not evaluated. This is like what happens in C. For example: >
|
|
|
670
|
|
|
671 let a = 1
|
|
|
672 echo a || b
|
|
|
673
|
|
|
674 This is valid even if there is no variable called "b" because "a" is non-zero,
|
|
|
675 so the result must be non-zero. Similarly below: >
|
|
|
676
|
|
|
677 echo exists("b") && b == "yes"
|
|
|
678
|
|
|
679 This is valid whether "b" has been defined or not. The second clause will
|
|
|
680 only be evaluated if "b" has been defined.
|
|
|
681
|
|
|
682
|
|
|
683 expr4 *expr4*
|
|
|
684 -----
|
|
|
685
|
|
|
686 expr5 {cmp} expr5
|
|
|
687
|
|
|
688 Compare two expr5 expressions, resulting in a 0 if it evaluates to false, or 1
|
|
|
689 if it evaluates to true.
|
|
|
690
|
|
|
691 *expr-==* *expr-!=* *expr->* *expr->=*
|
|
|
692 *expr-<* *expr-<=* *expr-=~* *expr-!~*
|
|
|
693 *expr-==#* *expr-!=#* *expr->#* *expr->=#*
|
|
|
694 *expr-<#* *expr-<=#* *expr-=~#* *expr-!~#*
|
|
|
695 *expr-==?* *expr-!=?* *expr->?* *expr->=?*
|
|
|
696 *expr-<?* *expr-<=?* *expr-=~?* *expr-!~?*
|
|
79
|
697 *expr-is*
|
|
7
|
698 use 'ignorecase' match case ignore case ~
|
|
|
699 equal == ==# ==?
|
|
|
700 not equal != !=# !=?
|
|
|
701 greater than > ># >?
|
|
|
702 greater than or equal >= >=# >=?
|
|
|
703 smaller than < <# <?
|
|
|
704 smaller than or equal <= <=# <=?
|
|
|
705 regexp matches =~ =~# =~?
|
|
|
706 regexp doesn't match !~ !~# !~?
|
|
79
|
707 same instance is
|
|
|
708 different instance isnot
|
|
7
|
709
|
|
|
710 Examples:
|
|
|
711 "abc" ==# "Abc" evaluates to 0
|
|
|
712 "abc" ==? "Abc" evaluates to 1
|
|
|
713 "abc" == "Abc" evaluates to 1 if 'ignorecase' is set, 0 otherwise
|
|
|
714
|
|
85
|
715 *E691* *E692*
|
|
79
|
716 A List can only be compared with a List and only "equal", "not equal" and "is"
|
|
|
717 can be used. This compares the values of the list, recursively. Ignoring
|
|
|
718 case means case is ignored when comparing item values.
|
|
|
719
|
|
114
|
720 *E735* *E736*
|
|
|
721 A Dictionary can only be compared with a Dictionary and only "equal", "not
|
|
|
722 equal" and "is" can be used. This compares the key/values of the Dictionary,
|
|
|
723 recursively. Ignoring case means case is ignored when comparing item values.
|
|
|
724
|
|
85
|
725 *E693* *E694*
|
|
79
|
726 A Funcref can only be compared with a Funcref and only "equal" and "not equal"
|
|
|
727 can be used. Case is never ignored.
|
|
|
728
|
|
|
729 When using "is" or "isnot" with a List this checks if the expressions are
|
|
|
730 referring to the same List instance. A copy of a List is different from the
|
|
|
731 original List. When using "is" without a List it is equivalent to using
|
|
|
732 "equal", using "isnot" equivalent to using "not equal". Except that a
|
|
|
733 different type means the values are different. "4 == '4'" is true, "4 is '4'"
|
|
|
734 is false.
|
|
|
735
|
|
7
|
736 When comparing a String with a Number, the String is converted to a Number,
|
|
|
737 and the comparison is done on Numbers. This means that "0 == 'x'" is TRUE,
|
|
|
738 because 'x' converted to a Number is zero.
|
|
|
739
|
|
|
740 When comparing two Strings, this is done with strcmp() or stricmp(). This
|
|
|
741 results in the mathematical difference (comparing byte values), not
|
|
|
742 necessarily the alphabetical difference in the local language.
|
|
|
743
|
|
|
744 When using the operators with a trailing '#", or the short version and
|
|
|
745 'ignorecase' is off, the comparing is done with strcmp().
|
|
|
746
|
|
|
747 When using the operators with a trailing '?', or the short version and
|
|
|
748 'ignorecase' is set, the comparing is done with stricmp().
|
|
|
749
|
|
|
750 The "=~" and "!~" operators match the lefthand argument with the righthand
|
|
|
751 argument, which is used as a pattern. See |pattern| for what a pattern is.
|
|
|
752 This matching is always done like 'magic' was set and 'cpoptions' is empty, no
|
|
|
753 matter what the actual value of 'magic' or 'cpoptions' is. This makes scripts
|
|
|
754 portable. To avoid backslashes in the regexp pattern to be doubled, use a
|
|
|
755 single-quote string, see |literal-string|.
|
|
|
756 Since a string is considered to be a single line, a multi-line pattern
|
|
|
757 (containing \n, backslash-n) will not match. However, a literal NL character
|
|
|
758 can be matched like an ordinary character. Examples:
|
|
|
759 "foo\nbar" =~ "\n" evaluates to 1
|
|
|
760 "foo\nbar" =~ "\\n" evaluates to 0
|
|
|
761
|
|
|
762
|
|
|
763 expr5 and expr6 *expr5* *expr6*
|
|
|
764 ---------------
|
|
79
|
765 expr6 + expr6 .. Number addition or List concatenation *expr-+*
|
|
|
766 expr6 - expr6 .. Number subtraction *expr--*
|
|
|
767 expr6 . expr6 .. String concatenation *expr-.*
|
|
|
768
|
|
|
769 For Lists only "+" is possible and then both expr6 must be a list. The result
|
|
|
770 is a new list with the two lists Concatenated.
|
|
|
771
|
|
|
772 expr7 * expr7 .. number multiplication *expr-star*
|
|
|
773 expr7 / expr7 .. number division *expr-/*
|
|
|
774 expr7 % expr7 .. number modulo *expr-%*
|
|
7
|
775
|
|
|
776 For all, except ".", Strings are converted to Numbers.
|
|
|
777
|
|
|
778 Note the difference between "+" and ".":
|
|
|
779 "123" + "456" = 579
|
|
|
780 "123" . "456" = "123456"
|
|
|
781
|
|
|
782 When the righthand side of '/' is zero, the result is 0x7fffffff.
|
|
|
783 When the righthand side of '%' is zero, the result is 0.
|
|
|
784
|
|
79
|
785 None of these work for Funcrefs.
|
|
|
786
|
|
7
|
787
|
|
|
788 expr7 *expr7*
|
|
|
789 -----
|
|
|
790 ! expr7 logical NOT *expr-!*
|
|
|
791 - expr7 unary minus *expr-unary--*
|
|
|
792 + expr7 unary plus *expr-unary-+*
|
|
|
793
|
|
|
794 For '!' non-zero becomes zero, zero becomes one.
|
|
|
795 For '-' the sign of the number is changed.
|
|
|
796 For '+' the number is unchanged.
|
|
|
797
|
|
|
798 A String will be converted to a Number first.
|
|
|
799
|
|
|
800 These three can be repeated and mixed. Examples:
|
|
|
801 !-1 == 0
|
|
|
802 !!8 == 1
|
|
|
803 --9 == 9
|
|
|
804
|
|
|
805
|
|
|
806 expr8 *expr8*
|
|
|
807 -----
|
|
102
|
808 expr8[expr1] item of String or List *expr-[]* *E111*
|
|
|
809
|
|
|
810 If expr8 is a Number or String this results in a String that contains the
|
|
|
811 expr1'th single byte from expr8. expr8 is used as a String, expr1 as a
|
|
55
|
812 Number. Note that this doesn't recognize multi-byte encodings.
|
|
|
813
|
|
|
814 Index zero gives the first character. This is like it works in C. Careful:
|
|
|
815 text column numbers start with one! Example, to get the character under the
|
|
|
816 cursor: >
|
|
7
|
817 :let c = getline(line("."))[col(".") - 1]
|
|
|
818
|
|
|
819 If the length of the String is less than the index, the result is an empty
|
|
55
|
820 String. A negative index always results in an empty string (reason: backwards
|
|
|
821 compatibility). Use [-1:] to get the last byte.
|
|
|
822
|
|
102
|
823 If expr8 is a List then it results the item at index expr1. See |list-index|
|
|
55
|
824 for possible index values. If the index is out of range this results in an
|
|
|
825 error. Example: >
|
|
|
826 :let item = mylist[-1] " get last item
|
|
|
827
|
|
|
828 Generally, if a List index is equal to or higher than the length of the List,
|
|
|
829 or more negative than the length of the List, this results in an error.
|
|
|
830
|
|
99
|
831
|
|
102
|
832 expr8[expr1a : expr1b] substring or sublist *expr-[:]*
|
|
|
833
|
|
|
834 If expr8 is a Number or String this results in the substring with the bytes
|
|
|
835 from expr1a to and including expr1b. expr8 is used as a String, expr1a and
|
|
55
|
836 expr1b are used as a Number. Note that this doesn't recognize multi-byte
|
|
|
837 encodings.
|
|
|
838
|
|
|
839 If expr1a is omitted zero is used. If expr1b is omitted the length of the
|
|
|
840 string minus one is used.
|
|
|
841
|
|
|
842 A negative number can be used to measure from the end of the string. -1 is
|
|
|
843 the last character, -2 the last but one, etc.
|
|
|
844
|
|
|
845 If an index goes out of range for the string characters are omitted. If
|
|
|
846 expr1b is smaller than expr1a the result is an empty string.
|
|
|
847
|
|
|
848 Examples: >
|
|
|
849 :let c = name[-1:] " last byte of a string
|
|
|
850 :let c = name[-2:-2] " last but one byte of a string
|
|
|
851 :let s = line(".")[4:] " from the fifth byte to the end
|
|
|
852 :let s = s[:-3] " remove last two bytes
|
|
|
853
|
|
102
|
854 If expr8 is a List this results in a new List with the items indicated by the
|
|
55
|
855 indexes expr1a and expr1b. This works like with a String, as explained just
|
|
|
856 above, except that indexes out of range cause an error. Examples: >
|
|
|
857 :let l = mylist[:3] " first four items
|
|
|
858 :let l = mylist[4:4] " List with one item
|
|
|
859 :let l = mylist[:] " shallow copy of a List
|
|
|
860
|
|
102
|
861 Using expr8[expr1] or expr8[expr1a : expr1b] on a Funcref results in an error.
|
|
|
862
|
|
|
863
|
|
|
864 expr8.name entry in a Dictionary *expr-entry*
|
|
|
865
|
|
|
866 If expr8 is a Dictionary and it is followed by a dot, then the following name
|
|
|
867 will be used as a key in the Dictionary. This is just like: expr8[name].
|
|
99
|
868
|
|
|
869 The name must consist of alphanumeric characters, just like a variable name,
|
|
|
870 but it may start with a number. Curly braces cannot be used.
|
|
|
871
|
|
|
872 There must not be white space before or after the dot.
|
|
|
873
|
|
|
874 Examples: >
|
|
|
875 :let dict = {"one": 1, 2: "two"}
|
|
|
876 :echo dict.one
|
|
|
877 :echo dict .2
|
|
|
878
|
|
|
879 Note that the dot is also used for String concatenation. To avoid confusion
|
|
|
880 always put spaces around the dot for String concatenation.
|
|
|
881
|
|
|
882
|
|
102
|
883 expr8(expr1, ...) Funcref function call
|
|
|
884
|
|
|
885 When expr8 is a |Funcref| type variable, invoke the function it refers to.
|
|
|
886
|
|
|
887
|
|
|
888
|
|
|
889 *expr9*
|
|
7
|
890 number
|
|
|
891 ------
|
|
|
892 number number constant *expr-number*
|
|
|
893
|
|
|
894 Decimal, Hexadecimal (starting with 0x or 0X), or Octal (starting with 0).
|
|
|
895
|
|
|
896
|
|
|
897 string *expr-string* *E114*
|
|
|
898 ------
|
|
|
899 "string" string constant *expr-quote*
|
|
|
900
|
|
|
901 Note that double quotes are used.
|
|
|
902
|
|
|
903 A string constant accepts these special characters:
|
|
|
904 \... three-digit octal number (e.g., "\316")
|
|
|
905 \.. two-digit octal number (must be followed by non-digit)
|
|
|
906 \. one-digit octal number (must be followed by non-digit)
|
|
|
907 \x.. byte specified with two hex numbers (e.g., "\x1f")
|
|
|
908 \x. byte specified with one hex number (must be followed by non-hex char)
|
|
|
909 \X.. same as \x..
|
|
|
910 \X. same as \x.
|
|
|
911 \u.... character specified with up to 4 hex numbers, stored according to the
|
|
|
912 current value of 'encoding' (e.g., "\u02a4")
|
|
|
913 \U.... same as \u....
|
|
|
914 \b backspace <BS>
|
|
|
915 \e escape <Esc>
|
|
|
916 \f formfeed <FF>
|
|
|
917 \n newline <NL>
|
|
|
918 \r return <CR>
|
|
|
919 \t tab <Tab>
|
|
|
920 \\ backslash
|
|
|
921 \" double quote
|
|
|
922 \<xxx> Special key named "xxx". e.g. "\<C-W>" for CTRL-W.
|
|
|
923
|
|
|
924 Note that "\000" and "\x00" force the end of the string.
|
|
|
925
|
|
|
926
|
|
|
927 literal-string *literal-string* *E115*
|
|
|
928 ---------------
|
|
26
|
929 'string' string constant *expr-'*
|
|
7
|
930
|
|
|
931 Note that single quotes are used.
|
|
|
932
|
|
26
|
933 This string is taken as it is. No backslashes are removed or have a special
|
|
99
|
934 meaning. The only exception is that two quotes stand for one quote.
|
|
26
|
935
|
|
|
936 Single quoted strings are useful for patterns, so that backslashes do not need
|
|
|
937 to be doubled. These two commands are equivalent: >
|
|
|
938 if a =~ "\\s*"
|
|
|
939 if a =~ '\s*'
|
|
7
|
940
|
|
|
941
|
|
|
942 option *expr-option* *E112* *E113*
|
|
|
943 ------
|
|
|
944 &option option value, local value if possible
|
|
|
945 &g:option global option value
|
|
|
946 &l:option local option value
|
|
|
947
|
|
|
948 Examples: >
|
|
|
949 echo "tabstop is " . &tabstop
|
|
|
950 if &insertmode
|
|
|
951
|
|
|
952 Any option name can be used here. See |options|. When using the local value
|
|
|
953 and there is no buffer-local or window-local value, the global value is used
|
|
|
954 anyway.
|
|
|
955
|
|
|
956
|
|
|
957 register *expr-register*
|
|
|
958 --------
|
|
|
959 @r contents of register 'r'
|
|
|
960
|
|
|
961 The result is the contents of the named register, as a single string.
|
|
|
962 Newlines are inserted where required. To get the contents of the unnamed
|
|
336
|
963 register use @" or @@. See |registers| for an explanation of the available
|
|
|
964 registers.
|
|
|
965
|
|
|
966 When using the '=' register you get the expression itself, not what it
|
|
|
967 evaluates to. Use |eval()| to evaluate it.
|
|
7
|
968
|
|
|
969
|
|
|
970 nesting *expr-nesting* *E110*
|
|
|
971 -------
|
|
|
972 (expr1) nested expression
|
|
|
973
|
|
|
974
|
|
|
975 environment variable *expr-env*
|
|
|
976 --------------------
|
|
|
977 $VAR environment variable
|
|
|
978
|
|
|
979 The String value of any environment variable. When it is not defined, the
|
|
|
980 result is an empty string.
|
|
|
981 *expr-env-expand*
|
|
|
982 Note that there is a difference between using $VAR directly and using
|
|
|
983 expand("$VAR"). Using it directly will only expand environment variables that
|
|
|
984 are known inside the current Vim session. Using expand() will first try using
|
|
|
985 the environment variables known inside the current Vim session. If that
|
|
|
986 fails, a shell will be used to expand the variable. This can be slow, but it
|
|
|
987 does expand all variables that the shell knows about. Example: >
|
|
|
988 :echo $version
|
|
|
989 :echo expand("$version")
|
|
|
990 The first one probably doesn't echo anything, the second echoes the $version
|
|
|
991 variable (if your shell supports it).
|
|
|
992
|
|
|
993
|
|
|
994 internal variable *expr-variable*
|
|
|
995 -----------------
|
|
|
996 variable internal variable
|
|
|
997 See below |internal-variables|.
|
|
|
998
|
|
|
999
|
|
170
|
1000 function call *expr-function* *E116* *E118* *E119* *E120*
|
|
7
|
1001 -------------
|
|
|
1002 function(expr1, ...) function call
|
|
|
1003 See below |functions|.
|
|
|
1004
|
|
|
1005
|
|
|
1006 ==============================================================================
|
|
|
1007 3. Internal variable *internal-variables* *E121*
|
|
|
1008 *E461*
|
|
|
1009 An internal variable name can be made up of letters, digits and '_'. But it
|
|
|
1010 cannot start with a digit. It's also possible to use curly braces, see
|
|
|
1011 |curly-braces-names|.
|
|
|
1012
|
|
|
1013 An internal variable is created with the ":let" command |:let|.
|
|
87
|
1014 An internal variable is explicitly destroyed with the ":unlet" command
|
|
|
1015 |:unlet|.
|
|
|
1016 Using a name that is not an internal variable or refers to a variable that has
|
|
|
1017 been destroyed results in an error.
|
|
7
|
1018
|
|
|
1019 There are several name spaces for variables. Which one is to be used is
|
|
|
1020 specified by what is prepended:
|
|
|
1021
|
|
|
1022 (nothing) In a function: local to a function; otherwise: global
|
|
|
1023 |buffer-variable| b: Local to the current buffer.
|
|
|
1024 |window-variable| w: Local to the current window.
|
|
|
1025 |global-variable| g: Global.
|
|
|
1026 |local-variable| l: Local to a function.
|
|
|
1027 |script-variable| s: Local to a |:source|'ed Vim script.
|
|
|
1028 |function-argument| a: Function argument (only inside a function).
|
|
|
1029 |vim-variable| v: Global, predefined by Vim.
|
|
|
1030
|
|
133
|
1031 The scope name by itself can be used as a Dictionary. For example, to delete
|
|
|
1032 all script-local variables: >
|
|
|
1033 :for k in keys(s:)
|
|
|
1034 : unlet s:[k]
|
|
|
1035 :endfor
|
|
|
1036 <
|
|
7
|
1037 *buffer-variable* *b:var*
|
|
|
1038 A variable name that is preceded with "b:" is local to the current buffer.
|
|
|
1039 Thus you can have several "b:foo" variables, one for each buffer.
|
|
|
1040 This kind of variable is deleted when the buffer is wiped out or deleted with
|
|
|
1041 |:bdelete|.
|
|
|
1042
|
|
|
1043 One local buffer variable is predefined:
|
|
|
1044 *b:changedtick-variable* *changetick*
|
|
|
1045 b:changedtick The total number of changes to the current buffer. It is
|
|
|
1046 incremented for each change. An undo command is also a change
|
|
|
1047 in this case. This can be used to perform an action only when
|
|
|
1048 the buffer has changed. Example: >
|
|
|
1049 :if my_changedtick != b:changedtick
|
|
|
1050 : let my_changedtick = b:changedtick
|
|
|
1051 : call My_Update()
|
|
|
1052 :endif
|
|
|
1053 <
|
|
|
1054 *window-variable* *w:var*
|
|
|
1055 A variable name that is preceded with "w:" is local to the current window. It
|
|
|
1056 is deleted when the window is closed.
|
|
|
1057
|
|
|
1058 *global-variable* *g:var*
|
|
|
1059 Inside functions global variables are accessed with "g:". Omitting this will
|
|
|
1060 access a variable local to a function. But "g:" can also be used in any other
|
|
|
1061 place if you like.
|
|
|
1062
|
|
|
1063 *local-variable* *l:var*
|
|
|
1064 Inside functions local variables are accessed without prepending anything.
|
|
|
1065 But you can also prepend "l:" if you like.
|
|
|
1066
|
|
|
1067 *script-variable* *s:var*
|
|
|
1068 In a Vim script variables starting with "s:" can be used. They cannot be
|
|
|
1069 accessed from outside of the scripts, thus are local to the script.
|
|
|
1070
|
|
|
1071 They can be used in:
|
|
|
1072 - commands executed while the script is sourced
|
|
|
1073 - functions defined in the script
|
|
|
1074 - autocommands defined in the script
|
|
|
1075 - functions and autocommands defined in functions and autocommands which were
|
|
|
1076 defined in the script (recursively)
|
|
|
1077 - user defined commands defined in the script
|
|
|
1078 Thus not in:
|
|
|
1079 - other scripts sourced from this one
|
|
|
1080 - mappings
|
|
|
1081 - etc.
|
|
|
1082
|
|
|
1083 script variables can be used to avoid conflicts with global variable names.
|
|
|
1084 Take this example:
|
|
|
1085
|
|
|
1086 let s:counter = 0
|
|
|
1087 function MyCounter()
|
|
|
1088 let s:counter = s:counter + 1
|
|
|
1089 echo s:counter
|
|
|
1090 endfunction
|
|
|
1091 command Tick call MyCounter()
|
|
|
1092
|
|
|
1093 You can now invoke "Tick" from any script, and the "s:counter" variable in
|
|
|
1094 that script will not be changed, only the "s:counter" in the script where
|
|
|
1095 "Tick" was defined is used.
|
|
|
1096
|
|
|
1097 Another example that does the same: >
|
|
|
1098
|
|
|
1099 let s:counter = 0
|
|
|
1100 command Tick let s:counter = s:counter + 1 | echo s:counter
|
|
|
1101
|
|
|
1102 When calling a function and invoking a user-defined command, the context for
|
|
9
|
1103 script variables is set to the script where the function or command was
|
|
7
|
1104 defined.
|
|
|
1105
|
|
|
1106 The script variables are also available when a function is defined inside a
|
|
|
1107 function that is defined in a script. Example: >
|
|
|
1108
|
|
|
1109 let s:counter = 0
|
|
|
1110 function StartCounting(incr)
|
|
|
1111 if a:incr
|
|
|
1112 function MyCounter()
|
|
|
1113 let s:counter = s:counter + 1
|
|
|
1114 endfunction
|
|
|
1115 else
|
|
|
1116 function MyCounter()
|
|
|
1117 let s:counter = s:counter - 1
|
|
|
1118 endfunction
|
|
|
1119 endif
|
|
|
1120 endfunction
|
|
|
1121
|
|
|
1122 This defines the MyCounter() function either for counting up or counting down
|
|
|
1123 when calling StartCounting(). It doesn't matter from where StartCounting() is
|
|
|
1124 called, the s:counter variable will be accessible in MyCounter().
|
|
|
1125
|
|
|
1126 When the same script is sourced again it will use the same script variables.
|
|
|
1127 They will remain valid as long as Vim is running. This can be used to
|
|
|
1128 maintain a counter: >
|
|
|
1129
|
|
|
1130 if !exists("s:counter")
|
|
|
1131 let s:counter = 1
|
|
|
1132 echo "script executed for the first time"
|
|
|
1133 else
|
|
|
1134 let s:counter = s:counter + 1
|
|
|
1135 echo "script executed " . s:counter . " times now"
|
|
|
1136 endif
|
|
|
1137
|
|
|
1138 Note that this means that filetype plugins don't get a different set of script
|
|
|
1139 variables for each buffer. Use local buffer variables instead |b:var|.
|
|
|
1140
|
|
|
1141
|
|
|
1142 Predefined Vim variables: *vim-variable* *v:var*
|
|
|
1143
|
|
189
|
1144 *v:beval_col* *beval_col-variable*
|
|
|
1145 v:beval_col The number of the column, over which the mouse pointer is.
|
|
|
1146 This is the byte index in the |v:beval_lnum| line.
|
|
|
1147 Only valid while evaluating the 'balloonexpr' option.
|
|
|
1148
|
|
|
1149 *v:beval_bufnr* *beval_bufnr-variable*
|
|
|
1150 v:beval_bufnr The number of the buffer, over which the mouse pointer is. Only
|
|
|
1151 valid while evaluating the 'balloonexpr' option.
|
|
|
1152
|
|
|
1153 *v:beval_lnum* *beval_lnum-variable*
|
|
|
1154 v:beval_lnum The number of the line, over which the mouse pointer is. Only
|
|
|
1155 valid while evaluating the 'balloonexpr' option.
|
|
|
1156
|
|
|
1157 *v:beval_text* *beval_text-variable*
|
|
374
|
1158 v:beval_text The text under or after the mouse pointer. Usually a word as
|
|
|
1159 it is useful for debugging a C program. 'iskeyword' applies,
|
|
|
1160 but a dot and "->" before the position is included. When on a
|
|
|
1161 ']' the text before it is used, including the matching '[' and
|
|
189
|
1162 word before it. When on a Visual area within one line the
|
|
|
1163 highlighted text is used.
|
|
|
1164 Only valid while evaluating the 'balloonexpr' option.
|
|
|
1165
|
|
|
1166 *v:beval_winnr* *beval_winnr-variable*
|
|
|
1167 v:beval_winnr The number of the window, over which the mouse pointer is. Only
|
|
|
1168 valid while evaluating the 'balloonexpr' option.
|
|
|
1169
|
|
7
|
1170 *v:charconvert_from* *charconvert_from-variable*
|
|
|
1171 v:charconvert_from
|
|
|
1172 The name of the character encoding of a file to be converted.
|
|
|
1173 Only valid while evaluating the 'charconvert' option.
|
|
|
1174
|
|
|
1175 *v:charconvert_to* *charconvert_to-variable*
|
|
|
1176 v:charconvert_to
|
|
|
1177 The name of the character encoding of a file after conversion.
|
|
|
1178 Only valid while evaluating the 'charconvert' option.
|
|
|
1179
|
|
|
1180 *v:cmdarg* *cmdarg-variable*
|
|
|
1181 v:cmdarg This variable is used for two purposes:
|
|
|
1182 1. The extra arguments given to a file read/write command.
|
|
|
1183 Currently these are "++enc=" and "++ff=". This variable is
|
|
|
1184 set before an autocommand event for a file read/write
|
|
|
1185 command is triggered. There is a leading space to make it
|
|
|
1186 possible to append this variable directly after the
|
|
|
1187 read/write command. Note: The "+cmd" argument isn't
|
|
|
1188 included here, because it will be executed anyway.
|
|
|
1189 2. When printing a PostScript file with ":hardcopy" this is
|
|
|
1190 the argument for the ":hardcopy" command. This can be used
|
|
|
1191 in 'printexpr'.
|
|
|
1192
|
|
|
1193 *v:cmdbang* *cmdbang-variable*
|
|
|
1194 v:cmdbang Set like v:cmdarg for a file read/write command. When a "!"
|
|
|
1195 was used the value is 1, otherwise it is 0. Note that this
|
|
|
1196 can only be used in autocommands. For user commands |<bang>|
|
|
|
1197 can be used.
|
|
|
1198
|
|
|
1199 *v:count* *count-variable*
|
|
|
1200 v:count The count given for the last Normal mode command. Can be used
|
|
|
1201 to get the count before a mapping. Read-only. Example: >
|
|
|
1202 :map _x :<C-U>echo "the count is " . v:count<CR>
|
|
|
1203 < Note: The <C-U> is required to remove the line range that you
|
|
|
1204 get when typing ':' after a count.
|
|
|
1205 "count" also works, for backwards compatibility.
|
|
|
1206
|
|
|
1207 *v:count1* *count1-variable*
|
|
|
1208 v:count1 Just like "v:count", but defaults to one when no count is
|
|
|
1209 used.
|
|
|
1210
|
|
|
1211 *v:ctype* *ctype-variable*
|
|
|
1212 v:ctype The current locale setting for characters of the runtime
|
|
|
1213 environment. This allows Vim scripts to be aware of the
|
|
|
1214 current locale encoding. Technical: it's the value of
|
|
|
1215 LC_CTYPE. When not using a locale the value is "C".
|
|
|
1216 This variable can not be set directly, use the |:language|
|
|
|
1217 command.
|
|
|
1218 See |multi-lang|.
|
|
|
1219
|
|
|
1220 *v:dying* *dying-variable*
|
|
|
1221 v:dying Normally zero. When a deadly signal is caught it's set to
|
|
|
1222 one. When multiple signals are caught the number increases.
|
|
|
1223 Can be used in an autocommand to check if Vim didn't
|
|
|
1224 terminate normally. {only works on Unix}
|
|
|
1225 Example: >
|
|
|
1226 :au VimLeave * if v:dying | echo "\nAAAAaaaarrrggghhhh!!!\n" | endif
|
|
|
1227 <
|
|
|
1228 *v:errmsg* *errmsg-variable*
|
|
|
1229 v:errmsg Last given error message. It's allowed to set this variable.
|
|
|
1230 Example: >
|
|
|
1231 :let v:errmsg = ""
|
|
|
1232 :silent! next
|
|
|
1233 :if v:errmsg != ""
|
|
|
1234 : ... handle error
|
|
|
1235 < "errmsg" also works, for backwards compatibility.
|
|
|
1236
|
|
|
1237 *v:exception* *exception-variable*
|
|
|
1238 v:exception The value of the exception most recently caught and not
|
|
|
1239 finished. See also |v:throwpoint| and |throw-variables|.
|
|
|
1240 Example: >
|
|
|
1241 :try
|
|
|
1242 : throw "oops"
|
|
|
1243 :catch /.*/
|
|
|
1244 : echo "caught" v:exception
|
|
|
1245 :endtry
|
|
|
1246 < Output: "caught oops".
|
|
|
1247
|
|
179
|
1248 *v:fcs_reason* *fcs_reason-variable*
|
|
|
1249 v:fcs_reason The reason why the |FileChangedShell| event was triggered.
|
|
|
1250 Can be used in an autocommand to decide what to do and/or what
|
|
|
1251 to set v:fcs_choice to. Possible values:
|
|
|
1252 deleted file no longer exists
|
|
|
1253 conflict file contents, mode or timestamp was
|
|
|
1254 changed and buffer is modified
|
|
|
1255 changed file contents has changed
|
|
|
1256 mode mode of file changed
|
|
|
1257 time only file timestamp changed
|
|
|
1258
|
|
|
1259 *v:fcs_choice* *fcs_choice-variable*
|
|
|
1260 v:fcs_choice What should happen after a |FileChangedShell| event was
|
|
|
1261 triggered. Can be used in an autocommand to tell Vim what to
|
|
|
1262 do with the affected buffer:
|
|
|
1263 reload Reload the buffer (does not work if
|
|
|
1264 the file was deleted).
|
|
|
1265 ask Ask the user what to do, as if there
|
|
|
1266 was no autocommand. Except that when
|
|
|
1267 only the timestamp changed nothing
|
|
|
1268 will happen.
|
|
|
1269 <empty> Nothing, the autocommand should do
|
|
|
1270 everything that needs to be done.
|
|
|
1271 The default is empty. If another (invalid) value is used then
|
|
|
1272 Vim behaves like it is empty, there is no warning message.
|
|
|
1273
|
|
7
|
1274 *v:fname_in* *fname_in-variable*
|
|
|
1275 v:fname_in The name of the input file. Only valid while evaluating:
|
|
|
1276 option used for ~
|
|
|
1277 'charconvert' file to be converted
|
|
|
1278 'diffexpr' original file
|
|
|
1279 'patchexpr' original file
|
|
|
1280 'printexpr' file to be printed
|
|
|
1281
|
|
|
1282 *v:fname_out* *fname_out-variable*
|
|
|
1283 v:fname_out The name of the output file. Only valid while
|
|
|
1284 evaluating:
|
|
|
1285 option used for ~
|
|
|
1286 'charconvert' resulting converted file (*)
|
|
|
1287 'diffexpr' output of diff
|
|
|
1288 'patchexpr' resulting patched file
|
|
|
1289 (*) When doing conversion for a write command (e.g., ":w
|
|
|
1290 file") it will be equal to v:fname_in. When doing conversion
|
|
|
1291 for a read command (e.g., ":e file") it will be a temporary
|
|
|
1292 file and different from v:fname_in.
|
|
|
1293
|
|
|
1294 *v:fname_new* *fname_new-variable*
|
|
|
1295 v:fname_new The name of the new version of the file. Only valid while
|
|
|
1296 evaluating 'diffexpr'.
|
|
|
1297
|
|
|
1298 *v:fname_diff* *fname_diff-variable*
|
|
|
1299 v:fname_diff The name of the diff (patch) file. Only valid while
|
|
|
1300 evaluating 'patchexpr'.
|
|
|
1301
|
|
|
1302 *v:folddashes* *folddashes-variable*
|
|
|
1303 v:folddashes Used for 'foldtext': dashes representing foldlevel of a closed
|
|
|
1304 fold.
|
|
29
|
1305 Read-only in the |sandbox|. |fold-foldtext|
|
|
7
|
1306
|
|
|
1307 *v:foldlevel* *foldlevel-variable*
|
|
|
1308 v:foldlevel Used for 'foldtext': foldlevel of closed fold.
|
|
29
|
1309 Read-only in the |sandbox|. |fold-foldtext|
|
|
7
|
1310
|
|
|
1311 *v:foldend* *foldend-variable*
|
|
|
1312 v:foldend Used for 'foldtext': last line of closed fold.
|
|
29
|
1313 Read-only in the |sandbox|. |fold-foldtext|
|
|
7
|
1314
|
|
|
1315 *v:foldstart* *foldstart-variable*
|
|
|
1316 v:foldstart Used for 'foldtext': first line of closed fold.
|
|
29
|
1317 Read-only in the |sandbox|. |fold-foldtext|
|
|
7
|
1318
|
|
11
|
1319 *v:insertmode* *insertmode-variable*
|
|
|
1320 v:insertmode Used for the |InsertEnter| and |InsertChange| autocommand
|
|
|
1321 events. Values:
|
|
|
1322 i Insert mode
|
|
|
1323 r Replace mode
|
|
|
1324 v Virtual Replace mode
|
|
|
1325
|
|
102
|
1326 *v:key* *key-variable*
|
|
|
1327 v:key Key of the current item of a Dictionary. Only valid while
|
|
|
1328 evaluating the expression used with |map()| and |filter()|.
|
|
|
1329 Read-only.
|
|
|
1330
|
|
7
|
1331 *v:lang* *lang-variable*
|
|
|
1332 v:lang The current locale setting for messages of the runtime
|
|
|
1333 environment. This allows Vim scripts to be aware of the
|
|
|
1334 current language. Technical: it's the value of LC_MESSAGES.
|
|
|
1335 The value is system dependent.
|
|
|
1336 This variable can not be set directly, use the |:language|
|
|
|
1337 command.
|
|
|
1338 It can be different from |v:ctype| when messages are desired
|
|
|
1339 in a different language than what is used for character
|
|
|
1340 encoding. See |multi-lang|.
|
|
|
1341
|
|
|
1342 *v:lc_time* *lc_time-variable*
|
|
|
1343 v:lc_time The current locale setting for time messages of the runtime
|
|
|
1344 environment. This allows Vim scripts to be aware of the
|
|
|
1345 current language. Technical: it's the value of LC_TIME.
|
|
|
1346 This variable can not be set directly, use the |:language|
|
|
|
1347 command. See |multi-lang|.
|
|
|
1348
|
|
|
1349 *v:lnum* *lnum-variable*
|
|
29
|
1350 v:lnum Line number for the 'foldexpr' |fold-expr| and 'indentexpr'
|
|
|
1351 expressions. Only valid while one of these expressions is
|
|
|
1352 being evaluated. Read-only when in the |sandbox|.
|
|
7
|
1353
|
|
|
1354 *v:prevcount* *prevcount-variable*
|
|
|
1355 v:prevcount The count given for the last but one Normal mode command.
|
|
|
1356 This is the v:count value of the previous command. Useful if
|
|
|
1357 you want to cancel Visual mode and then use the count. >
|
|
|
1358 :vmap % <Esc>:call MyFilter(v:prevcount)<CR>
|
|
|
1359 < Read-only.
|
|
|
1360
|
|
170
|
1361 *v:profiling* *profiling-variable*
|
|
|
1362 v:profiling Normally zero. Set to one after using ":profile start".
|
|
|
1363 See |profiling|.
|
|
|
1364
|
|
7
|
1365 *v:progname* *progname-variable*
|
|
|
1366 v:progname Contains the name (with path removed) with which Vim was
|
|
|
1367 invoked. Allows you to do special initialisations for "view",
|
|
|
1368 "evim" etc., or any other name you might symlink to Vim.
|
|
|
1369 Read-only.
|
|
|
1370
|
|
|
1371 *v:register* *register-variable*
|
|
|
1372 v:register The name of the register supplied to the last normal mode
|
|
|
1373 command. Empty if none were supplied. |getreg()| |setreg()|
|
|
|
1374
|
|
|
1375 *v:servername* *servername-variable*
|
|
|
1376 v:servername The resulting registered |x11-clientserver| name if any.
|
|
|
1377 Read-only.
|
|
|
1378
|
|
|
1379 *v:shell_error* *shell_error-variable*
|
|
|
1380 v:shell_error Result of the last shell command. When non-zero, the last
|
|
|
1381 shell command had an error. When zero, there was no problem.
|
|
|
1382 This only works when the shell returns the error code to Vim.
|
|
|
1383 The value -1 is often used when the command could not be
|
|
|
1384 executed. Read-only.
|
|
|
1385 Example: >
|
|
|
1386 :!mv foo bar
|
|
|
1387 :if v:shell_error
|
|
|
1388 : echo 'could not rename "foo" to "bar"!'
|
|
|
1389 :endif
|
|
|
1390 < "shell_error" also works, for backwards compatibility.
|
|
|
1391
|
|
|
1392 *v:statusmsg* *statusmsg-variable*
|
|
|
1393 v:statusmsg Last given status message. It's allowed to set this variable.
|
|
|
1394
|
|
|
1395 *v:termresponse* *termresponse-variable*
|
|
|
1396 v:termresponse The escape sequence returned by the terminal for the |t_RV|
|
|
|
1397 termcap entry. It is set when Vim receives an escape sequence
|
|
|
1398 that starts with ESC [ or CSI and ends in a 'c', with only
|
|
|
1399 digits, ';' and '.' in between.
|
|
|
1400 When this option is set, the TermResponse autocommand event is
|
|
|
1401 fired, so that you can react to the response from the
|
|
|
1402 terminal.
|
|
|
1403 The response from a new xterm is: "<Esc>[ Pp ; Pv ; Pc c". Pp
|
|
|
1404 is the terminal type: 0 for vt100 and 1 for vt220. Pv is the
|
|
|
1405 patch level (since this was introduced in patch 95, it's
|
|
|
1406 always 95 or bigger). Pc is always zero.
|
|
|
1407 {only when compiled with |+termresponse| feature}
|
|
|
1408
|
|
|
1409 *v:this_session* *this_session-variable*
|
|
|
1410 v:this_session Full filename of the last loaded or saved session file. See
|
|
|
1411 |:mksession|. It is allowed to set this variable. When no
|
|
|
1412 session file has been saved, this variable is empty.
|
|
|
1413 "this_session" also works, for backwards compatibility.
|
|
|
1414
|
|
|
1415 *v:throwpoint* *throwpoint-variable*
|
|
|
1416 v:throwpoint The point where the exception most recently caught and not
|
|
|
1417 finished was thrown. Not set when commands are typed. See
|
|
|
1418 also |v:exception| and |throw-variables|.
|
|
|
1419 Example: >
|
|
|
1420 :try
|
|
|
1421 : throw "oops"
|
|
|
1422 :catch /.*/
|
|
|
1423 : echo "Exception from" v:throwpoint
|
|
|
1424 :endtry
|
|
|
1425 < Output: "Exception from test.vim, line 2"
|
|
|
1426
|
|
102
|
1427 *v:val* *val-variable*
|
|
|
1428 v:val Value of the current item of a List or Dictionary. Only valid
|
|
|
1429 while evaluating the expression used with |map()| and
|
|
|
1430 |filter()|. Read-only.
|
|
|
1431
|
|
7
|
1432 *v:version* *version-variable*
|
|
|
1433 v:version Version number of Vim: Major version number times 100 plus
|
|
|
1434 minor version number. Version 5.0 is 500. Version 5.1 (5.01)
|
|
|
1435 is 501. Read-only. "version" also works, for backwards
|
|
|
1436 compatibility.
|
|
|
1437 Use |has()| to check if a certain patch was included, e.g.: >
|
|
|
1438 if has("patch123")
|
|
|
1439 < Note that patch numbers are specific to the version, thus both
|
|
|
1440 version 5.0 and 5.1 may have a patch 123, but these are
|
|
|
1441 completely different.
|
|
|
1442
|
|
|
1443 *v:warningmsg* *warningmsg-variable*
|
|
|
1444 v:warningmsg Last given warning message. It's allowed to set this variable.
|
|
|
1445
|
|
|
1446 ==============================================================================
|
|
|
1447 4. Builtin Functions *functions*
|
|
|
1448
|
|
|
1449 See |function-list| for a list grouped by what the function is used for.
|
|
|
1450
|
|
236
|
1451 (Use CTRL-] on the function name to jump to the full explanation.)
|
|
7
|
1452
|
|
|
1453 USAGE RESULT DESCRIPTION ~
|
|
|
1454
|
|
82
|
1455 add( {list}, {item}) List append {item} to List {list}
|
|
55
|
1456 append( {lnum}, {string}) Number append {string} below line {lnum}
|
|
161
|
1457 append( {lnum}, {list}) Number append lines {list} below line {lnum}
|
|
7
|
1458 argc() Number number of files in the argument list
|
|
55
|
1459 argidx() Number current index in the argument list
|
|
7
|
1460 argv( {nr}) String {nr} entry of the argument list
|
|
|
1461 browse( {save}, {title}, {initdir}, {default})
|
|
|
1462 String put up a file requester
|
|
29
|
1463 browsedir( {title}, {initdir}) String put up a directory requester
|
|
7
|
1464 bufexists( {expr}) Number TRUE if buffer {expr} exists
|
|
55
|
1465 buflisted( {expr}) Number TRUE if buffer {expr} is listed
|
|
|
1466 bufloaded( {expr}) Number TRUE if buffer {expr} is loaded
|
|
7
|
1467 bufname( {expr}) String Name of the buffer {expr}
|
|
|
1468 bufnr( {expr}) Number Number of the buffer {expr}
|
|
|
1469 bufwinnr( {expr}) Number window number of buffer {expr}
|
|
|
1470 byte2line( {byte}) Number line number at byte count {byte}
|
|
55
|
1471 byteidx( {expr}, {nr}) Number byte index of {nr}'th char in {expr}
|
|
102
|
1472 call( {func}, {arglist} [, {dict}])
|
|
|
1473 any call {func} with arguments {arglist}
|
|
7
|
1474 char2nr( {expr}) Number ASCII value of first char in {expr}
|
|
55
|
1475 cindent( {lnum}) Number C indent for line {lnum}
|
|
7
|
1476 col( {expr}) Number column nr of cursor or mark
|
|
464
|
1477 complete_add( {expr}) Number add completion match
|
|
|
1478 complete_check() Number check for key typed during completion
|
|
7
|
1479 confirm( {msg} [, {choices} [, {default} [, {type}]]])
|
|
|
1480 Number number of choice picked by user
|
|
55
|
1481 copy( {expr}) any make a shallow copy of {expr}
|
|
95
|
1482 count( {list}, {expr} [, {start} [, {ic}]])
|
|
|
1483 Number count how many {expr} are in {list}
|
|
7
|
1484 cscope_connection( [{num} , {dbpath} [, {prepend}]])
|
|
|
1485 Number checks existence of cscope connection
|
|
55
|
1486 cursor( {lnum}, {col}) Number position cursor at {lnum}, {col}
|
|
|
1487 deepcopy( {expr}) any make a full copy of {expr}
|
|
7
|
1488 delete( {fname}) Number delete file {fname}
|
|
|
1489 did_filetype() Number TRUE if FileType autocommand event used
|
|
55
|
1490 diff_filler( {lnum}) Number diff filler lines about {lnum}
|
|
|
1491 diff_hlID( {lnum}, {col}) Number diff highlighting at {lnum}/{col}
|
|
85
|
1492 empty( {expr}) Number TRUE if {expr} is empty
|
|
7
|
1493 escape( {string}, {chars}) String escape {chars} in {string} with '\'
|
|
205
|
1494 eval( {string}) any evaluate {string} into its value
|
|
55
|
1495 eventhandler( ) Number TRUE if inside an event handler
|
|
7
|
1496 executable( {expr}) Number 1 if executable {expr} exists
|
|
|
1497 exists( {expr}) Number TRUE if {expr} exists
|
|
|
1498 expand( {expr}) String expand special keywords in {expr}
|
|
|
1499 filereadable( {file}) Number TRUE if {file} is a readable file
|
|
102
|
1500 filter( {expr}, {string}) List/Dict remove items from {expr} where
|
|
|
1501 {string} is 0
|
|
95
|
1502 finddir( {name}[, {path}[, {count}]])
|
|
|
1503 String Find directory {name} in {path}
|
|
19
|
1504 findfile( {name}[, {path}[, {count}]])
|
|
95
|
1505 String Find file {name} in {path}
|
|
7
|
1506 filewritable( {file}) Number TRUE if {file} is a writable file
|
|
|
1507 fnamemodify( {fname}, {mods}) String modify file name
|
|
55
|
1508 foldclosed( {lnum}) Number first line of fold at {lnum} if closed
|
|
|
1509 foldclosedend( {lnum}) Number last line of fold at {lnum} if closed
|
|
7
|
1510 foldlevel( {lnum}) Number fold level at {lnum}
|
|
55
|
1511 foldtext( ) String line displayed for closed fold
|
|
7
|
1512 foreground( ) Number bring the Vim window to the foreground
|
|
55
|
1513 function( {name}) Funcref reference to function {name}
|
|
82
|
1514 get( {list}, {idx} [, {def}]) any get item {idx} from {list} or {def}
|
|
102
|
1515 get( {dict}, {key} [, {def}]) any get item {key} from {dict} or {def}
|
|
435
|
1516 getbufline( {expr}, {lnum} [, {end}])
|
|
|
1517 List lines {lnum} to {end} of buffer {expr}
|
|
55
|
1518 getchar( [expr]) Number get one character from the user
|
|
|
1519 getcharmod( ) Number modifiers for the last typed character
|
|
7
|
1520 getbufvar( {expr}, {varname}) variable {varname} in buffer {expr}
|
|
|
1521 getcmdline() String return the current command-line
|
|
|
1522 getcmdpos() Number return cursor position in command-line
|
|
|
1523 getcwd() String the current working directory
|
|
20
|
1524 getfperm( {fname}) String file permissions of file {fname}
|
|
|
1525 getfsize( {fname}) Number size in bytes of file {fname}
|
|
37
|
1526 getfontname( [{name}]) String name of font being used
|
|
7
|
1527 getftime( {fname}) Number last modification time of file
|
|
20
|
1528 getftype( {fname}) String description of type of file {fname}
|
|
161
|
1529 getline( {lnum}) String line {lnum} of current buffer
|
|
|
1530 getline( {lnum}, {end}) List lines {lnum} to {end} of current buffer
|
|
230
|
1531 getqflist() List list of quickfix items
|
|
282
|
1532 getreg( [{regname} [, 1]]) String contents of register
|
|
55
|
1533 getregtype( [{regname}]) String type of register
|
|
7
|
1534 getwinposx() Number X coord in pixels of GUI Vim window
|
|
|
1535 getwinposy() Number Y coord in pixels of GUI Vim window
|
|
|
1536 getwinvar( {nr}, {varname}) variable {varname} in window {nr}
|
|
|
1537 glob( {expr}) String expand file wildcards in {expr}
|
|
|
1538 globpath( {path}, {expr}) String do glob({expr}) for all dirs in {path}
|
|
|
1539 has( {feature}) Number TRUE if feature {feature} supported
|
|
102
|
1540 has_key( {dict}, {key}) Number TRUE if {dict} has entry {key}
|
|
7
|
1541 hasmapto( {what} [, {mode}]) Number TRUE if mapping to {what} exists
|
|
|
1542 histadd( {history},{item}) String add an item to a history
|
|
|
1543 histdel( {history} [, {item}]) String remove an item from a history
|
|
|
1544 histget( {history} [, {index}]) String get the item {index} from a history
|
|
|
1545 histnr( {history}) Number highest index of a history
|
|
|
1546 hlexists( {name}) Number TRUE if highlight group {name} exists
|
|
|
1547 hlID( {name}) Number syntax ID of highlight group {name}
|
|
|
1548 hostname() String name of the machine Vim is running on
|
|
55
|
1549 iconv( {expr}, {from}, {to}) String convert encoding of {expr}
|
|
|
1550 indent( {lnum}) Number indent of line {lnum}
|
|
95
|
1551 index( {list}, {expr} [, {start} [, {ic}]])
|
|
|
1552 Number index in {list} where {expr} appears
|
|
7
|
1553 input( {prompt} [, {text}]) String get input from the user
|
|
|
1554 inputdialog( {p} [, {t} [, {c}]]) String like input() but in a GUI dialog
|
|
55
|
1555 inputrestore() Number restore typeahead
|
|
|
1556 inputsave() Number save and clear typeahead
|
|
7
|
1557 inputsecret( {prompt} [, {text}]) String like input() but hiding the text
|
|
55
|
1558 insert( {list}, {item} [, {idx}]) List insert {item} in {list} [before {idx}]
|
|
7
|
1559 isdirectory( {directory}) Number TRUE if {directory} is a directory
|
|
148
|
1560 islocked( {expr}) Number TRUE if {expr} is locked
|
|
140
|
1561 items( {dict}) List List of key-value pairs in {dict}
|
|
95
|
1562 join( {list} [, {sep}]) String join {list} items into one String
|
|
99
|
1563 keys( {dict}) List List of keys in {dict}
|
|
55
|
1564 len( {expr}) Number the length of {expr}
|
|
|
1565 libcall( {lib}, {func}, {arg}) String call {func} in library {lib} with {arg}
|
|
7
|
1566 libcallnr( {lib}, {func}, {arg}) Number idem, but return a Number
|
|
|
1567 line( {expr}) Number line nr of cursor, last line or mark
|
|
|
1568 line2byte( {lnum}) Number byte count of line {lnum}
|
|
55
|
1569 lispindent( {lnum}) Number Lisp indent for line {lnum}
|
|
7
|
1570 localtime() Number current time
|
|
102
|
1571 map( {expr}, {string}) List/Dict change each item in {expr} to {expr}
|
|
7
|
1572 maparg( {name}[, {mode}]) String rhs of mapping {name} in mode {mode}
|
|
|
1573 mapcheck( {name}[, {mode}]) String check for mappings matching {name}
|
|
19
|
1574 match( {expr}, {pat}[, {start}[, {count}]])
|
|
7
|
1575 Number position where {pat} matches in {expr}
|
|
19
|
1576 matchend( {expr}, {pat}[, {start}[, {count}]])
|
|
7
|
1577 Number position where {pat} ends in {expr}
|
|
158
|
1578 matchlist( {expr}, {pat}[, {start}[, {count}]])
|
|
|
1579 List match and submatches of {pat} in {expr}
|
|
19
|
1580 matchstr( {expr}, {pat}[, {start}[, {count}]])
|
|
|
1581 String {count}'th match of {pat} in {expr}
|
|
87
|
1582 max({list}) Number maximum value of items in {list}
|
|
|
1583 min({list}) Number minumum value of items in {list}
|
|
168
|
1584 mkdir({name} [, {path} [, {prot}]])
|
|
|
1585 Number create directory {name}
|
|
55
|
1586 mode() String current editing mode
|
|
7
|
1587 nextnonblank( {lnum}) Number line nr of non-blank line >= {lnum}
|
|
|
1588 nr2char( {expr}) String single char with ASCII value {expr}
|
|
|
1589 prevnonblank( {lnum}) Number line nr of non-blank line <= {lnum}
|
|
449
|
1590 printf( {fmt}, {expr1}...) String format text
|
|
99
|
1591 range( {expr} [, {max} [, {stride}]])
|
|
|
1592 List items from {expr} to {max}
|
|
168
|
1593 readfile({fname} [, {binary} [, {max}]])
|
|
|
1594 List get list of lines from file {fname}
|
|
7
|
1595 remote_expr( {server}, {string} [, {idvar}])
|
|
|
1596 String send expression
|
|
|
1597 remote_foreground( {server}) Number bring Vim server to the foreground
|
|
|
1598 remote_peek( {serverid} [, {retvar}])
|
|
|
1599 Number check for reply string
|
|
|
1600 remote_read( {serverid}) String read reply string
|
|
|
1601 remote_send( {server}, {string} [, {idvar}])
|
|
|
1602 String send key sequence
|
|
79
|
1603 remove( {list}, {idx} [, {end}]) any remove items {idx}-{end} from {list}
|
|
99
|
1604 remove( {dict}, {key}) any remove entry {key} from {dict}
|
|
55
|
1605 rename( {from}, {to}) Number rename (move) file from {from} to {to}
|
|
|
1606 repeat( {expr}, {count}) String repeat {expr} {count} times
|
|
|
1607 resolve( {filename}) String get filename a shortcut points to
|
|
82
|
1608 reverse( {list}) List reverse {list} in-place
|
|
55
|
1609 search( {pattern} [, {flags}]) Number search for {pattern}
|
|
504
|
1610 searchdecl({name} [, {global}]) Number search for variable declaration
|
|
7
|
1611 searchpair( {start}, {middle}, {end} [, {flags} [, {skip}]])
|
|
55
|
1612 Number search for other end of start/end pair
|
|
7
|
1613 server2client( {clientid}, {string})
|
|
|
1614 Number send reply string
|
|
|
1615 serverlist() String get a list of available servers
|
|
|
1616 setbufvar( {expr}, {varname}, {val}) set {varname} in buffer {expr} to {val}
|
|
|
1617 setcmdpos( {pos}) Number set cursor position in command-line
|
|
|
1618 setline( {lnum}, {line}) Number set line {lnum} to {line}
|
|
277
|
1619 setqflist( {list}[, {action}]) Number set list of quickfix items using {list}
|
|
55
|
1620 setreg( {n}, {v}[, {opt}]) Number set register to value and type
|
|
7
|
1621 setwinvar( {nr}, {varname}, {val}) set {varname} in window {nr} to {val}
|
|
55
|
1622 simplify( {filename}) String simplify filename as much as possible
|
|
82
|
1623 sort( {list} [, {func}]) List sort {list}, using {func} to compare
|
|
374
|
1624 soundfold( {word}) String sound-fold {word}
|
|
344
|
1625 spellbadword() String badly spelled word at cursor
|
|
504
|
1626 spellsuggest( {word} [, {max}]) List spelling suggestions
|
|
282
|
1627 split( {expr} [, {pat} [, {keepempty}]])
|
|
|
1628 List make List from {pat} separated {expr}
|
|
7
|
1629 strftime( {format}[, {time}]) String time in specified format
|
|
133
|
1630 stridx( {haystack}, {needle}[, {start}])
|
|
|
1631 Number index of {needle} in {haystack}
|
|
95
|
1632 string( {expr}) String String representation of {expr} value
|
|
7
|
1633 strlen( {expr}) Number length of the String {expr}
|
|
|
1634 strpart( {src}, {start}[, {len}])
|
|
|
1635 String {len} characters of {src} at {start}
|
|
140
|
1636 strridx( {haystack}, {needle} [, {start}])
|
|
|
1637 Number last index of {needle} in {haystack}
|
|
7
|
1638 strtrans( {expr}) String translate string to make it printable
|
|
55
|
1639 submatch( {nr}) String specific match in ":substitute"
|
|
7
|
1640 substitute( {expr}, {pat}, {sub}, {flags})
|
|
|
1641 String all {pat} in {expr} replaced with {sub}
|
|
32
|
1642 synID( {lnum}, {col}, {trans}) Number syntax ID at {lnum} and {col}
|
|
7
|
1643 synIDattr( {synID}, {what} [, {mode}])
|
|
|
1644 String attribute {what} of syntax ID {synID}
|
|
|
1645 synIDtrans( {synID}) Number translated syntax ID of {synID}
|
|
24
|
1646 system( {expr} [, {input}]) String output of shell command/filter {expr}
|
|
205
|
1647 taglist({expr}) List list of tags matching {expr}
|
|
7
|
1648 tempname() String name for a temporary file
|
|
|
1649 tolower( {expr}) String the String {expr} switched to lowercase
|
|
|
1650 toupper( {expr}) String the String {expr} switched to uppercase
|
|
15
|
1651 tr( {src}, {fromstr}, {tostr}) String translate chars of {src} in {fromstr}
|
|
|
1652 to chars in {tostr}
|
|
7
|
1653 type( {name}) Number type of variable {name}
|
|
140
|
1654 values( {dict}) List List of values in {dict}
|
|
7
|
1655 virtcol( {expr}) Number screen column of cursor or mark
|
|
|
1656 visualmode( [expr]) String last visual mode used
|
|
|
1657 winbufnr( {nr}) Number buffer number of window {nr}
|
|
|
1658 wincol() Number window column of the cursor
|
|
|
1659 winheight( {nr}) Number height of window {nr}
|
|
|
1660 winline() Number window line of the cursor
|
|
|
1661 winnr() Number number of current window
|
|
55
|
1662 winrestcmd() String returns command to restore window sizes
|
|
7
|
1663 winwidth( {nr}) Number width of window {nr}
|
|
158
|
1664 writefile({list}, {fname} [, {binary}])
|
|
|
1665 Number write list of lines to file {fname}
|
|
7
|
1666
|
|
82
|
1667 add({list}, {expr}) *add()*
|
|
|
1668 Append the item {expr} to List {list}. Returns the resulting
|
|
236
|
1669 List. Examples: >
|
|
82
|
1670 :let alist = add([1, 2, 3], item)
|
|
|
1671 :call add(mylist, "woodstock")
|
|
|
1672 < Note that when {expr} is a List it is appended as a single
|
|
55
|
1673 item. Use |extend()| to concatenate Lists.
|
|
85
|
1674 Use |insert()| to add an item at another position.
|
|
55
|
1675
|
|
82
|
1676
|
|
|
1677 append({lnum}, {expr}) *append()*
|
|
153
|
1678 When {expr} is a List: Append each item of the List as a text
|
|
82
|
1679 line below line {lnum} in the current buffer.
|
|
153
|
1680 Otherwise append {expr} as one text line below line {lnum} in
|
|
|
1681 the current buffer.
|
|
|
1682 {lnum} can be zero to insert a line before the first one.
|
|
82
|
1683 Returns 1 for failure ({lnum} out of range or out of memory),
|
|
|
1684 0 for success. Example: >
|
|
55
|
1685 :let failed = append(line('$'), "# THE END")
|
|
82
|
1686 :let failed = append(0, ["Chapter 1", "the beginning"])
|
|
55
|
1687 <
|
|
7
|
1688 *argc()*
|
|
|
1689 argc() The result is the number of files in the argument list of the
|
|
|
1690 current window. See |arglist|.
|
|
|
1691
|
|
|
1692 *argidx()*
|
|
|
1693 argidx() The result is the current index in the argument list. 0 is
|
|
|
1694 the first file. argc() - 1 is the last one. See |arglist|.
|
|
|
1695
|
|
|
1696 *argv()*
|
|
|
1697 argv({nr}) The result is the {nr}th file in the argument list of the
|
|
|
1698 current window. See |arglist|. "argv(0)" is the first one.
|
|
|
1699 Example: >
|
|
|
1700 :let i = 0
|
|
|
1701 :while i < argc()
|
|
|
1702 : let f = escape(argv(i), '. ')
|
|
|
1703 : exe 'amenu Arg.' . f . ' :e ' . f . '<CR>'
|
|
|
1704 : let i = i + 1
|
|
|
1705 :endwhile
|
|
|
1706 <
|
|
|
1707 *browse()*
|
|
|
1708 browse({save}, {title}, {initdir}, {default})
|
|
|
1709 Put up a file requester. This only works when "has("browse")"
|
|
|
1710 returns non-zero (only in some GUI versions).
|
|
|
1711 The input fields are:
|
|
|
1712 {save} when non-zero, select file to write
|
|
|
1713 {title} title for the requester
|
|
|
1714 {initdir} directory to start browsing in
|
|
|
1715 {default} default file name
|
|
|
1716 When the "Cancel" button is hit, something went wrong, or
|
|
|
1717 browsing is not possible, an empty string is returned.
|
|
|
1718
|
|
29
|
1719 *browsedir()*
|
|
|
1720 browsedir({title}, {initdir})
|
|
|
1721 Put up a directory requester. This only works when
|
|
|
1722 "has("browse")" returns non-zero (only in some GUI versions).
|
|
|
1723 On systems where a directory browser is not supported a file
|
|
|
1724 browser is used. In that case: select a file in the directory
|
|
|
1725 to be used.
|
|
|
1726 The input fields are:
|
|
|
1727 {title} title for the requester
|
|
|
1728 {initdir} directory to start browsing in
|
|
|
1729 When the "Cancel" button is hit, something went wrong, or
|
|
|
1730 browsing is not possible, an empty string is returned.
|
|
|
1731
|
|
7
|
1732 bufexists({expr}) *bufexists()*
|
|
|
1733 The result is a Number, which is non-zero if a buffer called
|
|
|
1734 {expr} exists.
|
|
9
|
1735 If the {expr} argument is a number, buffer numbers are used.
|
|
7
|
1736 If the {expr} argument is a string it must match a buffer name
|
|
9
|
1737 exactly. The name can be:
|
|
|
1738 - Relative to the current directory.
|
|
|
1739 - A full path.
|
|
|
1740 - The name of a buffer with 'filetype' set to "nofile".
|
|
|
1741 - A URL name.
|
|
7
|
1742 Unlisted buffers will be found.
|
|
|
1743 Note that help files are listed by their short name in the
|
|
|
1744 output of |:buffers|, but bufexists() requires using their
|
|
|
1745 long name to be able to find them.
|
|
|
1746 Use "bufexists(0)" to test for the existence of an alternate
|
|
|
1747 file name.
|
|
|
1748 *buffer_exists()*
|
|
|
1749 Obsolete name: buffer_exists().
|
|
|
1750
|
|
|
1751 buflisted({expr}) *buflisted()*
|
|
|
1752 The result is a Number, which is non-zero if a buffer called
|
|
|
1753 {expr} exists and is listed (has the 'buflisted' option set).
|
|
9
|
1754 The {expr} argument is used like with |bufexists()|.
|
|
7
|
1755
|
|
|
1756 bufloaded({expr}) *bufloaded()*
|
|
|
1757 The result is a Number, which is non-zero if a buffer called
|
|
|
1758 {expr} exists and is loaded (shown in a window or hidden).
|
|
9
|
1759 The {expr} argument is used like with |bufexists()|.
|
|
7
|
1760
|
|
|
1761 bufname({expr}) *bufname()*
|
|
|
1762 The result is the name of a buffer, as it is displayed by the
|
|
|
1763 ":ls" command.
|
|
|
1764 If {expr} is a Number, that buffer number's name is given.
|
|
|
1765 Number zero is the alternate buffer for the current window.
|
|
|
1766 If {expr} is a String, it is used as a |file-pattern| to match
|
|
|
1767 with the buffer names. This is always done like 'magic' is
|
|
|
1768 set and 'cpoptions' is empty. When there is more than one
|
|
|
1769 match an empty string is returned.
|
|
|
1770 "" or "%" can be used for the current buffer, "#" for the
|
|
|
1771 alternate buffer.
|
|
|
1772 A full match is preferred, otherwise a match at the start, end
|
|
|
1773 or middle of the buffer name is accepted.
|
|
|
1774 Listed buffers are found first. If there is a single match
|
|
|
1775 with a listed buffer, that one is returned. Next unlisted
|
|
|
1776 buffers are searched for.
|
|
|
1777 If the {expr} is a String, but you want to use it as a buffer
|
|
|
1778 number, force it to be a Number by adding zero to it: >
|
|
|
1779 :echo bufname("3" + 0)
|
|
|
1780 < If the buffer doesn't exist, or doesn't have a name, an empty
|
|
|
1781 string is returned. >
|
|
|
1782 bufname("#") alternate buffer name
|
|
|
1783 bufname(3) name of buffer 3
|
|
|
1784 bufname("%") name of current buffer
|
|
|
1785 bufname("file2") name of buffer where "file2" matches.
|
|
|
1786 < *buffer_name()*
|
|
|
1787 Obsolete name: buffer_name().
|
|
|
1788
|
|
|
1789 *bufnr()*
|
|
|
1790 bufnr({expr}) The result is the number of a buffer, as it is displayed by
|
|
|
1791 the ":ls" command. For the use of {expr}, see |bufname()|
|
|
|
1792 above. If the buffer doesn't exist, -1 is returned.
|
|
|
1793 bufnr("$") is the last buffer: >
|
|
|
1794 :let last_buffer = bufnr("$")
|
|
|
1795 < The result is a Number, which is the highest buffer number
|
|
|
1796 of existing buffers. Note that not all buffers with a smaller
|
|
|
1797 number necessarily exist, because ":bwipeout" may have removed
|
|
|
1798 them. Use bufexists() to test for the existence of a buffer.
|
|
|
1799 *buffer_number()*
|
|
|
1800 Obsolete name: buffer_number().
|
|
|
1801 *last_buffer_nr()*
|
|
|
1802 Obsolete name for bufnr("$"): last_buffer_nr().
|
|
|
1803
|
|
|
1804 bufwinnr({expr}) *bufwinnr()*
|
|
|
1805 The result is a Number, which is the number of the first
|
|
|
1806 window associated with buffer {expr}. For the use of {expr},
|
|
|
1807 see |bufname()| above. If buffer {expr} doesn't exist or
|
|
|
1808 there is no such window, -1 is returned. Example: >
|
|
|
1809
|
|
|
1810 echo "A window containing buffer 1 is " . (bufwinnr(1))
|
|
|
1811
|
|
|
1812 < The number can be used with |CTRL-W_w| and ":wincmd w"
|
|
|
1813 |:wincmd|.
|
|
|
1814
|
|
|
1815
|
|
|
1816 byte2line({byte}) *byte2line()*
|
|
|
1817 Return the line number that contains the character at byte
|
|
|
1818 count {byte} in the current buffer. This includes the
|
|
|
1819 end-of-line character, depending on the 'fileformat' option
|
|
|
1820 for the current buffer. The first character has byte count
|
|
|
1821 one.
|
|
|
1822 Also see |line2byte()|, |go| and |:goto|.
|
|
|
1823 {not available when compiled without the |+byte_offset|
|
|
|
1824 feature}
|
|
|
1825
|
|
18
|
1826 byteidx({expr}, {nr}) *byteidx()*
|
|
|
1827 Return byte index of the {nr}'th character in the string
|
|
|
1828 {expr}. Use zero for the first character, it returns zero.
|
|
|
1829 This function is only useful when there are multibyte
|
|
|
1830 characters, otherwise the returned value is equal to {nr}.
|
|
|
1831 Composing characters are counted as a separate character.
|
|
|
1832 Example : >
|
|
|
1833 echo matchstr(str, ".", byteidx(str, 3))
|
|
|
1834 < will display the fourth character. Another way to do the
|
|
|
1835 same: >
|
|
|
1836 let s = strpart(str, byteidx(str, 3))
|
|
|
1837 echo strpart(s, 0, byteidx(s, 1))
|
|
|
1838 < If there are less than {nr} characters -1 is returned.
|
|
|
1839 If there are exactly {nr} characters the length of the string
|
|
|
1840 is returned.
|
|
|
1841
|
|
102
|
1842 call({func}, {arglist} [, {dict}]) *call()* *E699*
|
|
79
|
1843 Call function {func} with the items in List {arglist} as
|
|
|
1844 arguments.
|
|
|
1845 {func} can either be a Funcref or the name of a function.
|
|
|
1846 a:firstline and a:lastline are set to the cursor line.
|
|
|
1847 Returns the return value of the called function.
|
|
102
|
1848 {dict} is for functions with the "dict" attribute. It will be
|
|
|
1849 used to set the local variable "self". |Dictionary-function|
|
|
79
|
1850
|
|
7
|
1851 char2nr({expr}) *char2nr()*
|
|
|
1852 Return number value of the first char in {expr}. Examples: >
|
|
|
1853 char2nr(" ") returns 32
|
|
|
1854 char2nr("ABC") returns 65
|
|
|
1855 < The current 'encoding' is used. Example for "utf-8": >
|
|
|
1856 char2nr("á") returns 225
|
|
|
1857 char2nr("á"[0]) returns 195
|
|
236
|
1858 < nr2char() does the opposite.
|
|
7
|
1859
|
|
|
1860 cindent({lnum}) *cindent()*
|
|
|
1861 Get the amount of indent for line {lnum} according the C
|
|
|
1862 indenting rules, as with 'cindent'.
|
|
|
1863 The indent is counted in spaces, the value of 'tabstop' is
|
|
|
1864 relevant. {lnum} is used just like in |getline()|.
|
|
|
1865 When {lnum} is invalid or Vim was not compiled the |+cindent|
|
|
|
1866 feature, -1 is returned.
|
|
|
1867
|
|
|
1868 *col()*
|
|
24
|
1869 col({expr}) The result is a Number, which is the byte index of the column
|
|
7
|
1870 position given with {expr}. The accepted positions are:
|
|
|
1871 . the cursor position
|
|
|
1872 $ the end of the cursor line (the result is the
|
|
|
1873 number of characters in the cursor line plus one)
|
|
|
1874 'x position of mark x (if the mark is not set, 0 is
|
|
|
1875 returned)
|
|
|
1876 For the screen column position use |virtcol()|.
|
|
|
1877 Note that only marks in the current file can be used.
|
|
|
1878 Examples: >
|
|
|
1879 col(".") column of cursor
|
|
|
1880 col("$") length of cursor line plus one
|
|
|
1881 col("'t") column of mark t
|
|
|
1882 col("'" . markname) column of mark markname
|
|
|
1883 < The first column is 1. 0 is returned for an error.
|
|
|
1884 For the cursor position, when 'virtualedit' is active, the
|
|
|
1885 column is one higher if the cursor is after the end of the
|
|
|
1886 line. This can be used to obtain the column in Insert mode: >
|
|
|
1887 :imap <F2> <C-O>:let save_ve = &ve<CR>
|
|
|
1888 \<C-O>:set ve=all<CR>
|
|
|
1889 \<C-O>:echo col(".") . "\n" <Bar>
|
|
|
1890 \let &ve = save_ve<CR>
|
|
|
1891 <
|
|
464
|
1892
|
|
|
1893 complete_add({expr}) *complete_add()*
|
|
|
1894 Add {expr} to the list of matches. Only to be used by the
|
|
|
1895 function specified with the 'completefunc' option.
|
|
|
1896 Returns 0 for failure (empty string or out of memory),
|
|
|
1897 1 when the match was added, 2 when the match was already in
|
|
|
1898 the list.
|
|
|
1899
|
|
|
1900 complete_check() *complete_check()*
|
|
|
1901 Check for a key typed while looking for completion matches.
|
|
|
1902 This is to be used when looking for matches takes some time.
|
|
|
1903 Returns non-zero when searching for matches is to be aborted,
|
|
|
1904 zero otherwise.
|
|
|
1905 Only to be used by the function specified with the
|
|
|
1906 'completefunc' option.
|
|
|
1907
|
|
7
|
1908 *confirm()*
|
|
|
1909 confirm({msg} [, {choices} [, {default} [, {type}]]])
|
|
|
1910 Confirm() offers the user a dialog, from which a choice can be
|
|
|
1911 made. It returns the number of the choice. For the first
|
|
|
1912 choice this is 1.
|
|
|
1913 Note: confirm() is only supported when compiled with dialog
|
|
|
1914 support, see |+dialog_con| and |+dialog_gui|.
|
|
|
1915 {msg} is displayed in a |dialog| with {choices} as the
|
|
|
1916 alternatives. When {choices} is missing or empty, "&OK" is
|
|
|
1917 used (and translated).
|
|
|
1918 {msg} is a String, use '\n' to include a newline. Only on
|
|
|
1919 some systems the string is wrapped when it doesn't fit.
|
|
|
1920 {choices} is a String, with the individual choices separated
|
|
|
1921 by '\n', e.g. >
|
|
|
1922 confirm("Save changes?", "&Yes\n&No\n&Cancel")
|
|
|
1923 < The letter after the '&' is the shortcut key for that choice.
|
|
|
1924 Thus you can type 'c' to select "Cancel". The shortcut does
|
|
|
1925 not need to be the first letter: >
|
|
|
1926 confirm("file has been modified", "&Save\nSave &All")
|
|
|
1927 < For the console, the first letter of each choice is used as
|
|
|
1928 the default shortcut key.
|
|
|
1929 The optional {default} argument is the number of the choice
|
|
|
1930 that is made if the user hits <CR>. Use 1 to make the first
|
|
|
1931 choice the default one. Use 0 to not set a default. If
|
|
|
1932 {default} is omitted, 1 is used.
|
|
|
1933 The optional {type} argument gives the type of dialog. This
|
|
|
1934 is only used for the icon of the Win32 GUI. It can be one of
|
|
|
1935 these values: "Error", "Question", "Info", "Warning" or
|
|
|
1936 "Generic". Only the first character is relevant. When {type}
|
|
|
1937 is omitted, "Generic" is used.
|
|
|
1938 If the user aborts the dialog by pressing <Esc>, CTRL-C,
|
|
|
1939 or another valid interrupt key, confirm() returns 0.
|
|
|
1940
|
|
|
1941 An example: >
|
|
|
1942 :let choice = confirm("What do you want?", "&Apples\n&Oranges\n&Bananas", 2)
|
|
|
1943 :if choice == 0
|
|
|
1944 : echo "make up your mind!"
|
|
|
1945 :elseif choice == 3
|
|
|
1946 : echo "tasteful"
|
|
|
1947 :else
|
|
|
1948 : echo "I prefer bananas myself."
|
|
|
1949 :endif
|
|
|
1950 < In a GUI dialog, buttons are used. The layout of the buttons
|
|
|
1951 depends on the 'v' flag in 'guioptions'. If it is included,
|
|
|
1952 the buttons are always put vertically. Otherwise, confirm()
|
|
|
1953 tries to put the buttons in one horizontal line. If they
|
|
|
1954 don't fit, a vertical layout is used anyway. For some systems
|
|
|
1955 the horizontal layout is always used.
|
|
|
1956
|
|
55
|
1957 *copy()*
|
|
|
1958 copy({expr}) Make a copy of {expr}. For Numbers and Strings this isn't
|
|
|
1959 different from using {expr} directly.
|
|
|
1960 When {expr} is a List a shallow copy is created. This means
|
|
|
1961 that the original List can be changed without changing the
|
|
|
1962 copy, and vise versa. But the items are identical, thus
|
|
|
1963 changing an item changes the contents of both Lists. Also see
|
|
|
1964 |deepcopy()|.
|
|
|
1965
|
|
102
|
1966 count({comp}, {expr} [, {ic} [, {start}]]) *count()*
|
|
79
|
1967 Return the number of times an item with value {expr} appears
|
|
102
|
1968 in List or Dictionary {comp}.
|
|
|
1969 If {start} is given then start with the item with this index.
|
|
|
1970 {start} can only be used with a List.
|
|
79
|
1971 When {ic} is given and it's non-zero then case is ignored.
|
|
|
1972
|
|
|
1973
|
|
7
|
1974 *cscope_connection()*
|
|
|
1975 cscope_connection([{num} , {dbpath} [, {prepend}]])
|
|
|
1976 Checks for the existence of a |cscope| connection. If no
|
|
|
1977 parameters are specified, then the function returns:
|
|
|
1978 0, if cscope was not available (not compiled in), or
|
|
|
1979 if there are no cscope connections;
|
|
|
1980 1, if there is at least one cscope connection.
|
|
|
1981
|
|
|
1982 If parameters are specified, then the value of {num}
|
|
|
1983 determines how existence of a cscope connection is checked:
|
|
|
1984
|
|
|
1985 {num} Description of existence check
|
|
|
1986 ----- ------------------------------
|
|
|
1987 0 Same as no parameters (e.g., "cscope_connection()").
|
|
|
1988 1 Ignore {prepend}, and use partial string matches for
|
|
|
1989 {dbpath}.
|
|
|
1990 2 Ignore {prepend}, and use exact string matches for
|
|
|
1991 {dbpath}.
|
|
|
1992 3 Use {prepend}, use partial string matches for both
|
|
|
1993 {dbpath} and {prepend}.
|
|
|
1994 4 Use {prepend}, use exact string matches for both
|
|
|
1995 {dbpath} and {prepend}.
|
|
|
1996
|
|
|
1997 Note: All string comparisons are case sensitive!
|
|
|
1998
|
|
|
1999 Examples. Suppose we had the following (from ":cs show"): >
|
|
|
2000
|
|
|
2001 # pid database name prepend path
|
|
|
2002 0 27664 cscope.out /usr/local
|
|
|
2003 <
|
|
|
2004 Invocation Return Val ~
|
|
|
2005 ---------- ---------- >
|
|
|
2006 cscope_connection() 1
|
|
|
2007 cscope_connection(1, "out") 1
|
|
|
2008 cscope_connection(2, "out") 0
|
|
|
2009 cscope_connection(3, "out") 0
|
|
|
2010 cscope_connection(3, "out", "local") 1
|
|
|
2011 cscope_connection(4, "out") 0
|
|
|
2012 cscope_connection(4, "out", "local") 0
|
|
|
2013 cscope_connection(4, "cscope.out", "/usr/local") 1
|
|
|
2014 <
|
|
|
2015 cursor({lnum}, {col}) *cursor()*
|
|
|
2016 Positions the cursor at the column {col} in the line {lnum}.
|
|
493
|
2017 The first column is one.
|
|
7
|
2018 Does not change the jumplist.
|
|
|
2019 If {lnum} is greater than the number of lines in the buffer,
|
|
|
2020 the cursor will be positioned at the last line in the buffer.
|
|
|
2021 If {lnum} is zero, the cursor will stay in the current line.
|
|
493
|
2022 If {col} is greater than the number of bytes in the line,
|
|
7
|
2023 the cursor will be positioned at the last character in the
|
|
|
2024 line.
|
|
|
2025 If {col} is zero, the cursor will stay in the current column.
|
|
|
2026
|
|
55
|
2027
|
|
164
|
2028 deepcopy({expr}[, {noref}]) *deepcopy()* *E698*
|
|
55
|
2029 Make a copy of {expr}. For Numbers and Strings this isn't
|
|
|
2030 different from using {expr} directly.
|
|
|
2031 When {expr} is a List a full copy is created. This means
|
|
|
2032 that the original List can be changed without changing the
|
|
|
2033 copy, and vise versa. When an item is a List, a copy for it
|
|
|
2034 is made, recursively. Thus changing an item in the copy does
|
|
|
2035 not change the contents of the original List.
|
|
164
|
2036 When {noref} is omitted or zero a contained List or Dictionary
|
|
|
2037 is only copied once. All references point to this single
|
|
|
2038 copy. With {noref} set to 1 every occurrence of a List or
|
|
|
2039 Dictionary results in a new copy. This also means that a
|
|
|
2040 cyclic reference causes deepcopy() to fail.
|
|
114
|
2041 *E724*
|
|
|
2042 Nesting is possible up to 100 levels. When there is an item
|
|
164
|
2043 that refers back to a higher level making a deep copy with
|
|
|
2044 {noref} set to 1 will fail.
|
|
55
|
2045 Also see |copy()|.
|
|
|
2046
|
|
|
2047 delete({fname}) *delete()*
|
|
|
2048 Deletes the file by the name {fname}. The result is a Number,
|
|
7
|
2049 which is 0 if the file was deleted successfully, and non-zero
|
|
|
2050 when the deletion failed.
|
|
55
|
2051 Use |remove()| to delete an item from a List.
|
|
7
|
2052
|
|
|
2053 *did_filetype()*
|
|
|
2054 did_filetype() Returns non-zero when autocommands are being executed and the
|
|
|
2055 FileType event has been triggered at least once. Can be used
|
|
|
2056 to avoid triggering the FileType event again in the scripts
|
|
|
2057 that detect the file type. |FileType|
|
|
|
2058 When editing another file, the counter is reset, thus this
|
|
|
2059 really checks if the FileType event has been triggered for the
|
|
|
2060 current buffer. This allows an autocommand that starts
|
|
|
2061 editing another buffer to set 'filetype' and load a syntax
|
|
|
2062 file.
|
|
|
2063
|
|
32
|
2064 diff_filler({lnum}) *diff_filler()*
|
|
|
2065 Returns the number of filler lines above line {lnum}.
|
|
|
2066 These are the lines that were inserted at this point in
|
|
|
2067 another diff'ed window. These filler lines are shown in the
|
|
|
2068 display but don't exist in the buffer.
|
|
|
2069 {lnum} is used like with |getline()|. Thus "." is the current
|
|
|
2070 line, "'m" mark m, etc.
|
|
|
2071 Returns 0 if the current window is not in diff mode.
|
|
|
2072
|
|
|
2073 diff_hlID({lnum}, {col}) *diff_hlID()*
|
|
|
2074 Returns the highlight ID for diff mode at line {lnum} column
|
|
|
2075 {col} (byte index). When the current line does not have a
|
|
|
2076 diff change zero is returned.
|
|
|
2077 {lnum} is used like with |getline()|. Thus "." is the current
|
|
|
2078 line, "'m" mark m, etc.
|
|
|
2079 {col} is 1 for the leftmost column, {lnum} is 1 for the first
|
|
|
2080 line.
|
|
|
2081 The highlight ID can be used with |synIDattr()| to obtain
|
|
|
2082 syntax information about the highlighting.
|
|
|
2083
|
|
85
|
2084 empty({expr}) *empty()*
|
|
|
2085 Return the Number 1 if {expr} is empty, zero otherwise.
|
|
102
|
2086 A List or Dictionary is empty when it does not have any items.
|
|
85
|
2087 A Number is empty when its value is zero.
|
|
|
2088 For a long List this is much faster then comparing the length
|
|
|
2089 with zero.
|
|
|
2090
|
|
7
|
2091 escape({string}, {chars}) *escape()*
|
|
|
2092 Escape the characters in {chars} that occur in {string} with a
|
|
|
2093 backslash. Example: >
|
|
|
2094 :echo escape('c:\program files\vim', ' \')
|
|
|
2095 < results in: >
|
|
|
2096 c:\\program\ files\\vim
|
|
95
|
2097
|
|
|
2098 < *eval()*
|
|
|
2099 eval({string}) Evaluate {string} and return the result. Especially useful to
|
|
|
2100 turn the result of |string()| back into the original value.
|
|
|
2101 This works for Numbers, Strings and composites of them.
|
|
|
2102 Also works for Funcrefs that refer to existing functions.
|
|
|
2103
|
|
7
|
2104 eventhandler() *eventhandler()*
|
|
|
2105 Returns 1 when inside an event handler. That is that Vim got
|
|
|
2106 interrupted while waiting for the user to type a character,
|
|
|
2107 e.g., when dropping a file on Vim. This means interactive
|
|
|
2108 commands cannot be used. Otherwise zero is returned.
|
|
|
2109
|
|
|
2110 executable({expr}) *executable()*
|
|
|
2111 This function checks if an executable with the name {expr}
|
|
|
2112 exists. {expr} must be the name of the program without any
|
|
10
|
2113 arguments.
|
|
|
2114 executable() uses the value of $PATH and/or the normal
|
|
|
2115 searchpath for programs. *PATHEXT*
|
|
|
2116 On MS-DOS and MS-Windows the ".exe", ".bat", etc. can
|
|
|
2117 optionally be included. Then the extensions in $PATHEXT are
|
|
|
2118 tried. Thus if "foo.exe" does not exist, "foo.exe.bat" can be
|
|
|
2119 found. If $PATHEXT is not set then ".exe;.com;.bat;.cmd" is
|
|
|
2120 used. A dot by itself can be used in $PATHEXT to try using
|
|
|
2121 the name without an extension. When 'shell' looks like a
|
|
|
2122 Unix shell, then the name is also tried without adding an
|
|
|
2123 extension.
|
|
|
2124 On MS-DOS and MS-Windows it only checks if the file exists and
|
|
|
2125 is not a directory, not if it's really executable.
|
|
7
|
2126 The result is a Number:
|
|
|
2127 1 exists
|
|
|
2128 0 does not exist
|
|
|
2129 -1 not implemented on this system
|
|
|
2130
|
|
|
2131 *exists()*
|
|
|
2132 exists({expr}) The result is a Number, which is non-zero if {expr} is
|
|
|
2133 defined, zero otherwise. The {expr} argument is a string,
|
|
|
2134 which contains one of these:
|
|
|
2135 &option-name Vim option (only checks if it exists,
|
|
|
2136 not if it really works)
|
|
|
2137 +option-name Vim option that works.
|
|
|
2138 $ENVNAME environment variable (could also be
|
|
|
2139 done by comparing with an empty
|
|
|
2140 string)
|
|
|
2141 *funcname built-in function (see |functions|)
|
|
|
2142 or user defined function (see
|
|
|
2143 |user-functions|).
|
|
|
2144 varname internal variable (see
|
|
158
|
2145 |internal-variables|). Also works
|
|
|
2146 for |curly-braces-names|, Dictionary
|
|
|
2147 entries, List items, etc. Beware that
|
|
|
2148 this may cause functions to be
|
|
|
2149 invoked cause an error message for an
|
|
|
2150 invalid expression.
|
|
7
|
2151 :cmdname Ex command: built-in command, user
|
|
|
2152 command or command modifier |:command|.
|
|
|
2153 Returns:
|
|
|
2154 1 for match with start of a command
|
|
|
2155 2 full match with a command
|
|
|
2156 3 matches several user commands
|
|
|
2157 To check for a supported command
|
|
|
2158 always check the return value to be 2.
|
|
|
2159 #event autocommand defined for this event
|
|
|
2160 #event#pattern autocommand defined for this event and
|
|
|
2161 pattern (the pattern is taken
|
|
|
2162 literally and compared to the
|
|
|
2163 autocommand patterns character by
|
|
|
2164 character)
|
|
|
2165 For checking for a supported feature use |has()|.
|
|
|
2166
|
|
|
2167 Examples: >
|
|
|
2168 exists("&shortname")
|
|
|
2169 exists("$HOSTNAME")
|
|
|
2170 exists("*strftime")
|
|
|
2171 exists("*s:MyFunc")
|
|
|
2172 exists("bufcount")
|
|
|
2173 exists(":Make")
|
|
|
2174 exists("#CursorHold");
|
|
|
2175 exists("#BufReadPre#*.gz")
|
|
|
2176 < There must be no space between the symbol (&/$/*/#) and the
|
|
|
2177 name.
|
|
|
2178 Note that the argument must be a string, not the name of the
|
|
|
2179 variable itself! For example: >
|
|
|
2180 exists(bufcount)
|
|
|
2181 < This doesn't check for existence of the "bufcount" variable,
|
|
|
2182 but gets the contents of "bufcount", and checks if that
|
|
|
2183 exists.
|
|
|
2184
|
|
|
2185 expand({expr} [, {flag}]) *expand()*
|
|
|
2186 Expand wildcards and the following special keywords in {expr}.
|
|
|
2187 The result is a String.
|
|
|
2188
|
|
|
2189 When there are several matches, they are separated by <NL>
|
|
|
2190 characters. [Note: in version 5.0 a space was used, which
|
|
|
2191 caused problems when a file name contains a space]
|
|
|
2192
|
|
|
2193 If the expansion fails, the result is an empty string. A name
|
|
|
2194 for a non-existing file is not included.
|
|
|
2195
|
|
|
2196 When {expr} starts with '%', '#' or '<', the expansion is done
|
|
|
2197 like for the |cmdline-special| variables with their associated
|
|
|
2198 modifiers. Here is a short overview:
|
|
|
2199
|
|
|
2200 % current file name
|
|
|
2201 # alternate file name
|
|
|
2202 #n alternate file name n
|
|
|
2203 <cfile> file name under the cursor
|
|
|
2204 <afile> autocmd file name
|
|
|
2205 <abuf> autocmd buffer number (as a String!)
|
|
|
2206 <amatch> autocmd matched name
|
|
|
2207 <sfile> sourced script file name
|
|
|
2208 <cword> word under the cursor
|
|
|
2209 <cWORD> WORD under the cursor
|
|
|
2210 <client> the {clientid} of the last received
|
|
|
2211 message |server2client()|
|
|
|
2212 Modifiers:
|
|
|
2213 :p expand to full path
|
|
|
2214 :h head (last path component removed)
|
|
|
2215 :t tail (last path component only)
|
|
|
2216 :r root (one extension removed)
|
|
|
2217 :e extension only
|
|
|
2218
|
|
|
2219 Example: >
|
|
|
2220 :let &tags = expand("%:p:h") . "/tags"
|
|
|
2221 < Note that when expanding a string that starts with '%', '#' or
|
|
|
2222 '<', any following text is ignored. This does NOT work: >
|
|
|
2223 :let doesntwork = expand("%:h.bak")
|
|
|
2224 < Use this: >
|
|
|
2225 :let doeswork = expand("%:h") . ".bak"
|
|
|
2226 < Also note that expanding "<cfile>" and others only returns the
|
|
|
2227 referenced file name without further expansion. If "<cfile>"
|
|
|
2228 is "~/.cshrc", you need to do another expand() to have the
|
|
|
2229 "~/" expanded into the path of the home directory: >
|
|
|
2230 :echo expand(expand("<cfile>"))
|
|
|
2231 <
|
|
|
2232 There cannot be white space between the variables and the
|
|
|
2233 following modifier. The |fnamemodify()| function can be used
|
|
|
2234 to modify normal file names.
|
|
|
2235
|
|
|
2236 When using '%' or '#', and the current or alternate file name
|
|
|
2237 is not defined, an empty string is used. Using "%:p" in a
|
|
|
2238 buffer with no name, results in the current directory, with a
|
|
|
2239 '/' added.
|
|
|
2240
|
|
|
2241 When {expr} does not start with '%', '#' or '<', it is
|
|
|
2242 expanded like a file name is expanded on the command line.
|
|
|
2243 'suffixes' and 'wildignore' are used, unless the optional
|
|
|
2244 {flag} argument is given and it is non-zero. Names for
|
|
444
|
2245 non-existing files are included. The "**" item can be used to
|
|
|
2246 search in a directory tree. For example, to find all "README"
|
|
|
2247 files in the current directory and below: >
|
|
|
2248 :echo expand("**/README")
|
|
|
2249 <
|
|
7
|
2250 Expand() can also be used to expand variables and environment
|
|
|
2251 variables that are only known in a shell. But this can be
|
|
|
2252 slow, because a shell must be started. See |expr-env-expand|.
|
|
|
2253 The expanded variable is still handled like a list of file
|
|
|
2254 names. When an environment variable cannot be expanded, it is
|
|
|
2255 left unchanged. Thus ":echo expand('$FOOBAR')" results in
|
|
|
2256 "$FOOBAR".
|
|
|
2257
|
|
|
2258 See |glob()| for finding existing files. See |system()| for
|
|
|
2259 getting the raw output of an external command.
|
|
|
2260
|
|
102
|
2261 extend({expr1}, {expr2} [, {expr3}]) *extend()*
|
|
|
2262 {expr1} and {expr2} must be both Lists or both Dictionaries.
|
|
|
2263
|
|
|
2264 If they are Lists: Append {expr2} to {expr1}.
|
|
|
2265 If {expr3} is given insert the items of {expr2} before item
|
|
|
2266 {expr3} in {expr1}. When {expr3} is zero insert before the
|
|
|
2267 first item. When {expr3} is equal to len({expr1}) then
|
|
|
2268 {expr2} is appended.
|
|
79
|
2269 Examples: >
|
|
|
2270 :echo sort(extend(mylist, [7, 5]))
|
|
|
2271 :call extend(mylist, [2, 3], 1)
|
|
82
|
2272 < Use |add()| to concatenate one item to a list. To concatenate
|
|
|
2273 two lists into a new list use the + operator: >
|
|
79
|
2274 :let newlist = [1, 2, 3] + [4, 5]
|
|
102
|
2275 <
|
|
|
2276 If they are Dictionaries:
|
|
|
2277 Add all entries from {expr2} to {expr1}.
|
|
|
2278 If a key exists in both {expr1} and {expr2} then {expr3} is
|
|
|
2279 used to decide what to do:
|
|
|
2280 {expr3} = "keep": keep the value of {expr1}
|
|
|
2281 {expr3} = "force": use the value of {expr2}
|
|
119
|
2282 {expr3} = "error": give an error message *E737*
|
|
102
|
2283 When {expr3} is omitted then "force" is assumed.
|
|
|
2284
|
|
|
2285 {expr1} is changed when {expr2} is not empty. If necessary
|
|
|
2286 make a copy of {expr1} first.
|
|
|
2287 {expr2} remains unchanged.
|
|
|
2288 Returns {expr1}.
|
|
|
2289
|
|
79
|
2290
|
|
7
|
2291 filereadable({file}) *filereadable()*
|
|
|
2292 The result is a Number, which is TRUE when a file with the
|
|
|
2293 name {file} exists, and can be read. If {file} doesn't exist,
|
|
|
2294 or is a directory, the result is FALSE. {file} is any
|
|
|
2295 expression, which is used as a String.
|
|
|
2296 *file_readable()*
|
|
|
2297 Obsolete name: file_readable().
|
|
|
2298
|
|
95
|
2299
|
|
102
|
2300 filter({expr}, {string}) *filter()*
|
|
|
2301 {expr} must be a List or a Dictionary.
|
|
|
2302 For each item in {expr} evaluate {string} and when the result
|
|
|
2303 is zero remove the item from the List or Dictionary.
|
|
|
2304 Inside {string} |v:val| has the value of the current item.
|
|
|
2305 For a Dictionary |v:key| has the key of the current item.
|
|
|
2306 Examples: >
|
|
|
2307 :call filter(mylist, 'v:val !~ "OLD"')
|
|
|
2308 < Removes the items where "OLD" appears. >
|
|
|
2309 :call filter(mydict, 'v:key >= 8')
|
|
|
2310 < Removes the items with a key below 8. >
|
|
|
2311 :call filter(var, 0)
|
|
99
|
2312 < Removes all the items, thus clears the List or Dictionary.
|
|
|
2313
|
|
102
|
2314 Note that {string} is the result of expression and is then
|
|
|
2315 used as an expression again. Often it is good to use a
|
|
|
2316 |literal-string| to avoid having to double backslashes.
|
|
|
2317
|
|
|
2318 The operation is done in-place. If you want a List or
|
|
|
2319 Dictionary to remain unmodified make a copy first: >
|
|
99
|
2320 :let l = filter(copy(mylist), '& =~ "KEEP"')
|
|
102
|
2321
|
|
|
2322 < Returns {expr}, the List or Dictionary that was filtered.
|
|
95
|
2323
|
|
|
2324
|
|
19
|
2325 finddir({name}[, {path}[, {count}]]) *finddir()*
|
|
|
2326 Find directory {name} in {path}.
|
|
|
2327 If {path} is omitted or empty then 'path' is used.
|
|
|
2328 If the optional {count} is given, find {count}'s occurrence of
|
|
|
2329 {name} in {path}.
|
|
|
2330 This is quite similar to the ex-command |:find|.
|
|
|
2331 When the found directory is below the current directory a
|
|
|
2332 relative path is returned. Otherwise a full path is returned.
|
|
|
2333 Example: >
|
|
|
2334 :echo findfile("tags.vim", ".;")
|
|
|
2335 < Searches from the current directory upwards until it finds
|
|
|
2336 the file "tags.vim".
|
|
|
2337 {only available when compiled with the +file_in_path feature}
|
|
|
2338
|
|
|
2339 findfile({name}[, {path}[, {count}]]) *findfile()*
|
|
|
2340 Just like |finddir()|, but find a file instead of a directory.
|
|
|
2341
|
|
7
|
2342 filewritable({file}) *filewritable()*
|
|
|
2343 The result is a Number, which is 1 when a file with the
|
|
|
2344 name {file} exists, and can be written. If {file} doesn't
|
|
|
2345 exist, or is not writable, the result is 0. If (file) is a
|
|
|
2346 directory, and we can write to it, the result is 2.
|
|
|
2347
|
|
|
2348 fnamemodify({fname}, {mods}) *fnamemodify()*
|
|
|
2349 Modify file name {fname} according to {mods}. {mods} is a
|
|
|
2350 string of characters like it is used for file names on the
|
|
|
2351 command line. See |filename-modifiers|.
|
|
|
2352 Example: >
|
|
|
2353 :echo fnamemodify("main.c", ":p:h")
|
|
|
2354 < results in: >
|
|
|
2355 /home/mool/vim/vim/src
|
|
|
2356 < Note: Environment variables and "~" don't work in {fname}, use
|
|
|
2357 |expand()| first then.
|
|
|
2358
|
|
|
2359 foldclosed({lnum}) *foldclosed()*
|
|
|
2360 The result is a Number. If the line {lnum} is in a closed
|
|
|
2361 fold, the result is the number of the first line in that fold.
|
|
|
2362 If the line {lnum} is not in a closed fold, -1 is returned.
|
|
|
2363
|
|
|
2364 foldclosedend({lnum}) *foldclosedend()*
|
|
|
2365 The result is a Number. If the line {lnum} is in a closed
|
|
|
2366 fold, the result is the number of the last line in that fold.
|
|
|
2367 If the line {lnum} is not in a closed fold, -1 is returned.
|
|
|
2368
|
|
|
2369 foldlevel({lnum}) *foldlevel()*
|
|
|
2370 The result is a Number, which is the foldlevel of line {lnum}
|
|
|
2371 in the current buffer. For nested folds the deepest level is
|
|
|
2372 returned. If there is no fold at line {lnum}, zero is
|
|
|
2373 returned. It doesn't matter if the folds are open or closed.
|
|
|
2374 When used while updating folds (from 'foldexpr') -1 is
|
|
|
2375 returned for lines where folds are still to be updated and the
|
|
|
2376 foldlevel is unknown. As a special case the level of the
|
|
|
2377 previous line is usually available.
|
|
|
2378
|
|
|
2379 *foldtext()*
|
|
|
2380 foldtext() Returns a String, to be displayed for a closed fold. This is
|
|
|
2381 the default function used for the 'foldtext' option and should
|
|
|
2382 only be called from evaluating 'foldtext'. It uses the
|
|
|
2383 |v:foldstart|, |v:foldend| and |v:folddashes| variables.
|
|
|
2384 The returned string looks like this: >
|
|
|
2385 +-- 45 lines: abcdef
|
|
|
2386 < The number of dashes depends on the foldlevel. The "45" is
|
|
|
2387 the number of lines in the fold. "abcdef" is the text in the
|
|
|
2388 first non-blank line of the fold. Leading white space, "//"
|
|
|
2389 or "/*" and the text from the 'foldmarker' and 'commentstring'
|
|
|
2390 options is removed.
|
|
|
2391 {not available when compiled without the |+folding| feature}
|
|
|
2392
|
|
29
|
2393 foldtextresult({lnum}) *foldtextresult()*
|
|
|
2394 Returns the text that is displayed for the closed fold at line
|
|
|
2395 {lnum}. Evaluates 'foldtext' in the appropriate context.
|
|
|
2396 When there is no closed fold at {lnum} an empty string is
|
|
|
2397 returned.
|
|
|
2398 {lnum} is used like with |getline()|. Thus "." is the current
|
|
|
2399 line, "'m" mark m, etc.
|
|
|
2400 Useful when exporting folded text, e.g., to HTML.
|
|
|
2401 {not available when compiled without the |+folding| feature}
|
|
|
2402
|
|
7
|
2403 *foreground()*
|
|
|
2404 foreground() Move the Vim window to the foreground. Useful when sent from
|
|
|
2405 a client to a Vim server. |remote_send()|
|
|
|
2406 On Win32 systems this might not work, the OS does not always
|
|
|
2407 allow a window to bring itself to the foreground. Use
|
|
|
2408 |remote_foreground()| instead.
|
|
|
2409 {only in the Win32, Athena, Motif and GTK GUI versions and the
|
|
|
2410 Win32 console version}
|
|
|
2411
|
|
82
|
2412
|
|
85
|
2413 function({name}) *function()* *E700*
|
|
55
|
2414 Return a Funcref variable that refers to function {name}.
|
|
|
2415 {name} can be a user defined function or an internal function.
|
|
|
2416
|
|
82
|
2417
|
|
370
|
2418 garbagecollect() *garbagecollect()*
|
|
|
2419 Cleanup unused Lists and Dictionaries that have circular
|
|
|
2420 references. There is hardly ever a need to invoke this
|
|
|
2421 function, as it is automatically done when Vim runs out of
|
|
|
2422 memory or is waiting for the user to press a key after
|
|
|
2423 'updatetime'. Items without circular references are always
|
|
|
2424 freed when they become unused.
|
|
|
2425 This is useful if you have deleted a very big List and/or
|
|
|
2426 Dictionary with circular references in a script that runs for
|
|
|
2427 a long time.
|
|
|
2428
|
|
140
|
2429 get({list}, {idx} [, {default}]) *get()*
|
|
82
|
2430 Get item {idx} from List {list}. When this item is not
|
|
|
2431 available return {default}. Return zero when {default} is
|
|
|
2432 omitted.
|
|
102
|
2433 get({dict}, {key} [, {default}])
|
|
|
2434 Get item with key {key} from Dictionary {dict}. When this
|
|
|
2435 item is not available return {default}. Return zero when
|
|
|
2436 {default} is omitted.
|
|
|
2437
|
|
435
|
2438 *getbufline()*
|
|
|
2439 getbufline({expr}, {lnum} [, {end}])
|
|
448
|
2440 Return a List with the lines starting from {lnum} to {end}
|
|
|
2441 (inclusive) in the buffer {expr}. If {end} is omitted, a List
|
|
|
2442 with only the line {lnum} is returned.
|
|
435
|
2443
|
|
|
2444 For the use of {expr}, see |bufname()| above.
|
|
|
2445
|
|
448
|
2446 For {lnum} and {end} "$" can be used for the last line of the
|
|
|
2447 buffer. Otherwise a number must be used.
|
|
435
|
2448
|
|
|
2449 When {lnum} is smaller than 1 or bigger than the number of
|
|
|
2450 lines in the buffer, an empty List is returned.
|
|
|
2451
|
|
|
2452 When {end} is greater than the number of lines in the buffer,
|
|
|
2453 it is treated as {end} is set to the number of lines in the
|
|
448
|
2454 buffer. When {end} is before {lnum} an empty List is
|
|
435
|
2455 returned.
|
|
|
2456
|
|
448
|
2457 This function works only for loaded buffers. For unloaded and
|
|
435
|
2458 non-existing buffers, an empty List is returned.
|
|
|
2459
|
|
|
2460 Example: >
|
|
|
2461 :let lines = getbufline(bufnr("myfile"), 1, "$")
|
|
82
|
2462
|
|
|
2463 getbufvar({expr}, {varname}) *getbufvar()*
|
|
|
2464 The result is the value of option or local buffer variable
|
|
|
2465 {varname} in buffer {expr}. Note that the name without "b:"
|
|
|
2466 must be used.
|
|
216
|
2467 This also works for a global or buffer-local option, but it
|
|
|
2468 doesn't work for a global variable, window-local variable or
|
|
|
2469 window-local option.
|
|
82
|
2470 For the use of {expr}, see |bufname()| above.
|
|
|
2471 When the buffer or variable doesn't exist an empty string is
|
|
|
2472 returned, there is no error message.
|
|
|
2473 Examples: >
|
|
|
2474 :let bufmodified = getbufvar(1, "&mod")
|
|
|
2475 :echo "todo myvar = " . getbufvar("todo", "myvar")
|
|
|
2476 <
|
|
7
|
2477 getchar([expr]) *getchar()*
|
|
|
2478 Get a single character from the user. If it is an 8-bit
|
|
|
2479 character, the result is a number. Otherwise a String is
|
|
|
2480 returned with the encoded character. For a special key it's a
|
|
|
2481 sequence of bytes starting with 0x80 (decimal: 128).
|
|
|
2482 If [expr] is omitted, wait until a character is available.
|
|
|
2483 If [expr] is 0, only get a character when one is available.
|
|
|
2484 If [expr] is 1, only check if a character is available, it is
|
|
|
2485 not consumed. If a normal character is
|
|
|
2486 available, it is returned, otherwise a
|
|
|
2487 non-zero value is returned.
|
|
|
2488 If a normal character available, it is returned as a Number.
|
|
|
2489 Use nr2char() to convert it to a String.
|
|
|
2490 The returned value is zero if no character is available.
|
|
|
2491 The returned value is a string of characters for special keys
|
|
|
2492 and when a modifier (shift, control, alt) was used.
|
|
|
2493 There is no prompt, you will somehow have to make clear to the
|
|
|
2494 user that a character has to be typed.
|
|
|
2495 There is no mapping for the character.
|
|
|
2496 Key codes are replaced, thus when the user presses the <Del>
|
|
|
2497 key you get the code for the <Del> key, not the raw character
|
|
|
2498 sequence. Examples: >
|
|
|
2499 getchar() == "\<Del>"
|
|
|
2500 getchar() == "\<S-Left>"
|
|
|
2501 < This example redefines "f" to ignore case: >
|
|
|
2502 :nmap f :call FindChar()<CR>
|
|
|
2503 :function FindChar()
|
|
|
2504 : let c = nr2char(getchar())
|
|
|
2505 : while col('.') < col('$') - 1
|
|
|
2506 : normal l
|
|
|
2507 : if getline('.')[col('.') - 1] ==? c
|
|
|
2508 : break
|
|
|
2509 : endif
|
|
|
2510 : endwhile
|
|
|
2511 :endfunction
|
|
|
2512
|
|
|
2513 getcharmod() *getcharmod()*
|
|
|
2514 The result is a Number which is the state of the modifiers for
|
|
|
2515 the last obtained character with getchar() or in another way.
|
|
|
2516 These values are added together:
|
|
|
2517 2 shift
|
|
|
2518 4 control
|
|
|
2519 8 alt (meta)
|
|
|
2520 16 mouse double click
|
|
|
2521 32 mouse triple click
|
|
|
2522 64 mouse quadruple click
|
|
|
2523 128 Macintosh only: command
|
|
|
2524 Only the modifiers that have not been included in the
|
|
|
2525 character itself are obtained. Thus Shift-a results in "A"
|
|
|
2526 with no modifier.
|
|
|
2527
|
|
|
2528 getcmdline() *getcmdline()*
|
|
|
2529 Return the current command-line. Only works when the command
|
|
|
2530 line is being edited, thus requires use of |c_CTRL-\_e| or
|
|
|
2531 |c_CTRL-R_=|.
|
|
|
2532 Example: >
|
|
|
2533 :cmap <F7> <C-\>eescape(getcmdline(), ' \')<CR>
|
|
|
2534 < Also see |getcmdpos()| and |setcmdpos()|.
|
|
|
2535
|
|
95
|
2536 getcmdpos() *getcmdpos()*
|
|
7
|
2537 Return the position of the cursor in the command line as a
|
|
|
2538 byte count. The first column is 1.
|
|
|
2539 Only works when editing the command line, thus requires use of
|
|
|
2540 |c_CTRL-\_e| or |c_CTRL-R_=|. Returns 0 otherwise.
|
|
|
2541 Also see |setcmdpos()| and |getcmdline()|.
|
|
|
2542
|
|
|
2543 *getcwd()*
|
|
|
2544 getcwd() The result is a String, which is the name of the current
|
|
|
2545 working directory.
|
|
|
2546
|
|
|
2547 getfsize({fname}) *getfsize()*
|
|
|
2548 The result is a Number, which is the size in bytes of the
|
|
|
2549 given file {fname}.
|
|
|
2550 If {fname} is a directory, 0 is returned.
|
|
|
2551 If the file {fname} can't be found, -1 is returned.
|
|
|
2552
|
|
37
|
2553 getfontname([{name}]) *getfontname()*
|
|
|
2554 Without an argument returns the name of the normal font being
|
|
|
2555 used. Like what is used for the Normal highlight group
|
|
|
2556 |hl-Normal|.
|
|
|
2557 With an argument a check is done whether {name} is a valid
|
|
|
2558 font name. If not then an empty string is returned.
|
|
|
2559 Otherwise the actual font name is returned, or {name} if the
|
|
|
2560 GUI does not support obtaining the real name.
|
|
|
2561 Only works when the GUI is running, thus not you your vimrc or
|
|
|
2562 Note that the GTK 2 GUI accepts any font name, thus checking
|
|
|
2563 for a valid name does not work.
|
|
|
2564 gvimrc file. Use the |GUIEnter| autocommand to use this
|
|
|
2565 function just after the GUI has started.
|
|
|
2566
|
|
20
|
2567 getfperm({fname}) *getfperm()*
|
|
|
2568 The result is a String, which is the read, write, and execute
|
|
|
2569 permissions of the given file {fname}.
|
|
|
2570 If {fname} does not exist or its directory cannot be read, an
|
|
|
2571 empty string is returned.
|
|
|
2572 The result is of the form "rwxrwxrwx", where each group of
|
|
|
2573 "rwx" flags represent, in turn, the permissions of the owner
|
|
|
2574 of the file, the group the file belongs to, and other users.
|
|
|
2575 If a user does not have a given permission the flag for this
|
|
|
2576 is replaced with the string "-". Example: >
|
|
|
2577 :echo getfperm("/etc/passwd")
|
|
|
2578 < This will hopefully (from a security point of view) display
|
|
|
2579 the string "rw-r--r--" or even "rw-------".
|
|
205
|
2580
|
|
7
|
2581 getftime({fname}) *getftime()*
|
|
|
2582 The result is a Number, which is the last modification time of
|
|
|
2583 the given file {fname}. The value is measured as seconds
|
|
|
2584 since 1st Jan 1970, and may be passed to strftime(). See also
|
|
|
2585 |localtime()| and |strftime()|.
|
|
|
2586 If the file {fname} can't be found -1 is returned.
|
|
|
2587
|
|
20
|
2588 getftype({fname}) *getftype()*
|
|
|
2589 The result is a String, which is a description of the kind of
|
|
|
2590 file of the given file {fname}.
|
|
|
2591 If {fname} does not exist an empty string is returned.
|
|
|
2592 Here is a table over different kinds of files and their
|
|
|
2593 results:
|
|
|
2594 Normal file "file"
|
|
|
2595 Directory "dir"
|
|
|
2596 Symbolic link "link"
|
|
|
2597 Block device "bdev"
|
|
|
2598 Character device "cdev"
|
|
|
2599 Socket "socket"
|
|
|
2600 FIFO "fifo"
|
|
|
2601 All other "other"
|
|
|
2602 Example: >
|
|
|
2603 getftype("/home")
|
|
|
2604 < Note that a type such as "link" will only be returned on
|
|
|
2605 systems that support it. On some systems only "dir" and
|
|
|
2606 "file" are returned.
|
|
|
2607
|
|
7
|
2608 *getline()*
|
|
82
|
2609 getline({lnum} [, {end}])
|
|
|
2610 Without {end} the result is a String, which is line {lnum}
|
|
|
2611 from the current buffer. Example: >
|
|
7
|
2612 getline(1)
|
|
|
2613 < When {lnum} is a String that doesn't start with a
|
|
|
2614 digit, line() is called to translate the String into a Number.
|
|
|
2615 To get the line under the cursor: >
|
|
|
2616 getline(".")
|
|
|
2617 < When {lnum} is smaller than 1 or bigger than the number of
|
|
|
2618 lines in the buffer, an empty string is returned.
|
|
|
2619
|
|
82
|
2620 When {end} is given the result is a List where each item is a
|
|
|
2621 line from the current buffer in the range {lnum} to {end},
|
|
|
2622 including line {end}.
|
|
|
2623 {end} is used in the same way as {lnum}.
|
|
|
2624 Non-existing lines are silently omitted.
|
|
435
|
2625 When {end} is before {lnum} an empty List is returned.
|
|
82
|
2626 Example: >
|
|
|
2627 :let start = line('.')
|
|
|
2628 :let end = search("^$") - 1
|
|
|
2629 :let lines = getline(start, end)
|
|
|
2630
|
|
|
2631
|
|
230
|
2632 getqflist() *getqflist()*
|
|
|
2633 Returns a list with all the current quickfix errors. Each
|
|
|
2634 list item is a dictionary with these entries:
|
|
|
2635 bufnr number of buffer that has the file name, use
|
|
|
2636 bufname() to get the name
|
|
|
2637 lnum line number in the buffer (first line is 1)
|
|
|
2638 col column number (first column is 1)
|
|
233
|
2639 vcol non-zero: "col" is visual column
|
|
|
2640 zero: "col" is byte index
|
|
230
|
2641 nr error number
|
|
|
2642 text description of the error
|
|
|
2643 type type of the error, 'E', '1', etc.
|
|
|
2644 valid non-zero: recognized error message
|
|
|
2645
|
|
|
2646 Useful application: Find pattern matches in multiple files and
|
|
|
2647 do something with them: >
|
|
|
2648 :vimgrep /theword/jg *.c
|
|
|
2649 :for d in getqflist()
|
|
|
2650 : echo bufname(d.bufnr) ':' d.lnum '=' d.text
|
|
|
2651 :endfor
|
|
|
2652
|
|
|
2653
|
|
282
|
2654 getreg([{regname} [, 1]]) *getreg()*
|
|
7
|
2655 The result is a String, which is the contents of register
|
|
236
|
2656 {regname}. Example: >
|
|
7
|
2657 :let cliptext = getreg('*')
|
|
|
2658 < getreg('=') returns the last evaluated value of the expression
|
|
236
|
2659 register. (For use in maps.)
|
|
282
|
2660 getreg('=', 1) returns the expression itself, so that it can
|
|
|
2661 be restored with |setreg()|. For other registers the extra
|
|
|
2662 argument is ignored, thus you can always give it.
|
|
7
|
2663 If {regname} is not specified, |v:register| is used.
|
|
|
2664
|
|
82
|
2665
|
|
7
|
2666 getregtype([{regname}]) *getregtype()*
|
|
|
2667 The result is a String, which is type of register {regname}.
|
|
|
2668 The value will be one of:
|
|
|
2669 "v" for |characterwise| text
|
|
|
2670 "V" for |linewise| text
|
|
|
2671 "<CTRL-V>{width}" for |blockwise-visual| text
|
|
|
2672 0 for an empty or unknown register
|
|
|
2673 <CTRL-V> is one character with value 0x16.
|
|
|
2674 If {regname} is not specified, |v:register| is used.
|
|
|
2675
|
|
|
2676 *getwinposx()*
|
|
|
2677 getwinposx() The result is a Number, which is the X coordinate in pixels of
|
|
|
2678 the left hand side of the GUI Vim window. The result will be
|
|
|
2679 -1 if the information is not available.
|
|
|
2680
|
|
|
2681 *getwinposy()*
|
|
|
2682 getwinposy() The result is a Number, which is the Y coordinate in pixels of
|
|
|
2683 the top of the GUI Vim window. The result will be -1 if the
|
|
|
2684 information is not available.
|
|
|
2685
|
|
|
2686 getwinvar({nr}, {varname}) *getwinvar()*
|
|
|
2687 The result is the value of option or local window variable
|
|
323
|
2688 {varname} in window {nr}. When {nr} is zero the current
|
|
|
2689 window is used.
|
|
216
|
2690 This also works for a global option, buffer-local option and
|
|
|
2691 window-local option, but it doesn't work for a global variable
|
|
|
2692 or buffer-local variable.
|
|
7
|
2693 Note that the name without "w:" must be used.
|
|
|
2694 Examples: >
|
|
|
2695 :let list_is_on = getwinvar(2, '&list')
|
|
|
2696 :echo "myvar = " . getwinvar(1, 'myvar')
|
|
|
2697 <
|
|
|
2698 *glob()*
|
|
|
2699 glob({expr}) Expand the file wildcards in {expr}. The result is a String.
|
|
|
2700 When there are several matches, they are separated by <NL>
|
|
|
2701 characters.
|
|
|
2702 If the expansion fails, the result is an empty string.
|
|
|
2703 A name for a non-existing file is not included.
|
|
|
2704
|
|
|
2705 For most systems backticks can be used to get files names from
|
|
|
2706 any external command. Example: >
|
|
|
2707 :let tagfiles = glob("`find . -name tags -print`")
|
|
|
2708 :let &tags = substitute(tagfiles, "\n", ",", "g")
|
|
|
2709 < The result of the program inside the backticks should be one
|
|
|
2710 item per line. Spaces inside an item are allowed.
|
|
|
2711
|
|
|
2712 See |expand()| for expanding special Vim variables. See
|
|
|
2713 |system()| for getting the raw output of an external command.
|
|
|
2714
|
|
|
2715 globpath({path}, {expr}) *globpath()*
|
|
|
2716 Perform glob() on all directories in {path} and concatenate
|
|
|
2717 the results. Example: >
|
|
|
2718 :echo globpath(&rtp, "syntax/c.vim")
|
|
|
2719 < {path} is a comma-separated list of directory names. Each
|
|
|
2720 directory name is prepended to {expr} and expanded like with
|
|
|
2721 glob(). A path separator is inserted when needed.
|
|
|
2722 To add a comma inside a directory name escape it with a
|
|
|
2723 backslash. Note that on MS-Windows a directory may have a
|
|
|
2724 trailing backslash, remove it if you put a comma after it.
|
|
|
2725 If the expansion fails for one of the directories, there is no
|
|
|
2726 error message.
|
|
|
2727 The 'wildignore' option applies: Names matching one of the
|
|
|
2728 patterns in 'wildignore' will be skipped.
|
|
|
2729
|
|
444
|
2730 The "**" item can be used to search in a directory tree.
|
|
|
2731 For example, to find all "README.txt" files in the directories
|
|
|
2732 in 'runtimepath' and below: >
|
|
|
2733 :echo globpath(&rtp, "**/README.txt")
|
|
|
2734 <
|
|
7
|
2735 *has()*
|
|
|
2736 has({feature}) The result is a Number, which is 1 if the feature {feature} is
|
|
|
2737 supported, zero otherwise. The {feature} argument is a
|
|
|
2738 string. See |feature-list| below.
|
|
|
2739 Also see |exists()|.
|
|
|
2740
|
|
102
|
2741
|
|
|
2742 has_key({dict}, {key}) *has_key()*
|
|
|
2743 The result is a Number, which is 1 if Dictionary {dict} has an
|
|
|
2744 entry with key {key}. Zero otherwise.
|
|
|
2745
|
|
|
2746
|
|
7
|
2747 hasmapto({what} [, {mode}]) *hasmapto()*
|
|
|
2748 The result is a Number, which is 1 if there is a mapping that
|
|
|
2749 contains {what} in somewhere in the rhs (what it is mapped to)
|
|
|
2750 and this mapping exists in one of the modes indicated by
|
|
|
2751 {mode}.
|
|
|
2752 Both the global mappings and the mappings local to the current
|
|
|
2753 buffer are checked for a match.
|
|
|
2754 If no matching mapping is found 0 is returned.
|
|
|
2755 The following characters are recognized in {mode}:
|
|
|
2756 n Normal mode
|
|
|
2757 v Visual mode
|
|
|
2758 o Operator-pending mode
|
|
|
2759 i Insert mode
|
|
|
2760 l Language-Argument ("r", "f", "t", etc.)
|
|
|
2761 c Command-line mode
|
|
|
2762 When {mode} is omitted, "nvo" is used.
|
|
|
2763
|
|
|
2764 This function is useful to check if a mapping already exists
|
|
|
2765 to a function in a Vim script. Example: >
|
|
|
2766 :if !hasmapto('\ABCdoit')
|
|
|
2767 : map <Leader>d \ABCdoit
|
|
|
2768 :endif
|
|
|
2769 < This installs the mapping to "\ABCdoit" only if there isn't
|
|
|
2770 already a mapping to "\ABCdoit".
|
|
|
2771
|
|
|
2772 histadd({history}, {item}) *histadd()*
|
|
|
2773 Add the String {item} to the history {history} which can be
|
|
|
2774 one of: *hist-names*
|
|
|
2775 "cmd" or ":" command line history
|
|
|
2776 "search" or "/" search pattern history
|
|
|
2777 "expr" or "=" typed expression history
|
|
|
2778 "input" or "@" input line history
|
|
|
2779 If {item} does already exist in the history, it will be
|
|
|
2780 shifted to become the newest entry.
|
|
|
2781 The result is a Number: 1 if the operation was successful,
|
|
|
2782 otherwise 0 is returned.
|
|
|
2783
|
|
|
2784 Example: >
|
|
|
2785 :call histadd("input", strftime("%Y %b %d"))
|
|
|
2786 :let date=input("Enter date: ")
|
|
|
2787 < This function is not available in the |sandbox|.
|
|
|
2788
|
|
|
2789 histdel({history} [, {item}]) *histdel()*
|
|
236
|
2790 Clear {history}, i.e. delete all its entries. See |hist-names|
|
|
7
|
2791 for the possible values of {history}.
|
|
|
2792
|
|
|
2793 If the parameter {item} is given as String, this is seen
|
|
|
2794 as regular expression. All entries matching that expression
|
|
|
2795 will be removed from the history (if there are any).
|
|
|
2796 Upper/lowercase must match, unless "\c" is used |/\c|.
|
|
|
2797 If {item} is a Number, it will be interpreted as index, see
|
|
|
2798 |:history-indexing|. The respective entry will be removed
|
|
|
2799 if it exists.
|
|
|
2800
|
|
|
2801 The result is a Number: 1 for a successful operation,
|
|
|
2802 otherwise 0 is returned.
|
|
|
2803
|
|
|
2804 Examples:
|
|
|
2805 Clear expression register history: >
|
|
|
2806 :call histdel("expr")
|
|
|
2807 <
|
|
|
2808 Remove all entries starting with "*" from the search history: >
|
|
|
2809 :call histdel("/", '^\*')
|
|
|
2810 <
|
|
|
2811 The following three are equivalent: >
|
|
|
2812 :call histdel("search", histnr("search"))
|
|
|
2813 :call histdel("search", -1)
|
|
|
2814 :call histdel("search", '^'.histget("search", -1).'$')
|
|
|
2815 <
|
|
|
2816 To delete the last search pattern and use the last-but-one for
|
|
|
2817 the "n" command and 'hlsearch': >
|
|
|
2818 :call histdel("search", -1)
|
|
|
2819 :let @/ = histget("search", -1)
|
|
|
2820
|
|
|
2821 histget({history} [, {index}]) *histget()*
|
|
|
2822 The result is a String, the entry with Number {index} from
|
|
|
2823 {history}. See |hist-names| for the possible values of
|
|
|
2824 {history}, and |:history-indexing| for {index}. If there is
|
|
|
2825 no such entry, an empty String is returned. When {index} is
|
|
|
2826 omitted, the most recent item from the history is used.
|
|
|
2827
|
|
|
2828 Examples:
|
|
|
2829 Redo the second last search from history. >
|
|
|
2830 :execute '/' . histget("search", -2)
|
|
|
2831
|
|
|
2832 < Define an Ex command ":H {num}" that supports re-execution of
|
|
|
2833 the {num}th entry from the output of |:history|. >
|
|
|
2834 :command -nargs=1 H execute histget("cmd", 0+<args>)
|
|
|
2835 <
|
|
|
2836 histnr({history}) *histnr()*
|
|
|
2837 The result is the Number of the current entry in {history}.
|
|
|
2838 See |hist-names| for the possible values of {history}.
|
|
|
2839 If an error occurred, -1 is returned.
|
|
|
2840
|
|
|
2841 Example: >
|
|
|
2842 :let inp_index = histnr("expr")
|
|
|
2843 <
|
|
|
2844 hlexists({name}) *hlexists()*
|
|
|
2845 The result is a Number, which is non-zero if a highlight group
|
|
|
2846 called {name} exists. This is when the group has been
|
|
|
2847 defined in some way. Not necessarily when highlighting has
|
|
|
2848 been defined for it, it may also have been used for a syntax
|
|
|
2849 item.
|
|
|
2850 *highlight_exists()*
|
|
|
2851 Obsolete name: highlight_exists().
|
|
|
2852
|
|
|
2853 *hlID()*
|
|
|
2854 hlID({name}) The result is a Number, which is the ID of the highlight group
|
|
|
2855 with name {name}. When the highlight group doesn't exist,
|
|
|
2856 zero is returned.
|
|
|
2857 This can be used to retrieve information about the highlight
|
|
|
2858 group. For example, to get the background color of the
|
|
|
2859 "Comment" group: >
|
|
|
2860 :echo synIDattr(synIDtrans(hlID("Comment")), "bg")
|
|
|
2861 < *highlightID()*
|
|
|
2862 Obsolete name: highlightID().
|
|
|
2863
|
|
|
2864 hostname() *hostname()*
|
|
|
2865 The result is a String, which is the name of the machine on
|
|
236
|
2866 which Vim is currently running. Machine names greater than
|
|
7
|
2867 256 characters long are truncated.
|
|
|
2868
|
|
|
2869 iconv({expr}, {from}, {to}) *iconv()*
|
|
|
2870 The result is a String, which is the text {expr} converted
|
|
|
2871 from encoding {from} to encoding {to}.
|
|
|
2872 When the conversion fails an empty string is returned.
|
|
|
2873 The encoding names are whatever the iconv() library function
|
|
|
2874 can accept, see ":!man 3 iconv".
|
|
|
2875 Most conversions require Vim to be compiled with the |+iconv|
|
|
|
2876 feature. Otherwise only UTF-8 to latin1 conversion and back
|
|
|
2877 can be done.
|
|
|
2878 This can be used to display messages with special characters,
|
|
|
2879 no matter what 'encoding' is set to. Write the message in
|
|
|
2880 UTF-8 and use: >
|
|
|
2881 echo iconv(utf8_str, "utf-8", &enc)
|
|
|
2882 < Note that Vim uses UTF-8 for all Unicode encodings, conversion
|
|
|
2883 from/to UCS-2 is automatically changed to use UTF-8. You
|
|
|
2884 cannot use UCS-2 in a string anyway, because of the NUL bytes.
|
|
|
2885 {only available when compiled with the +multi_byte feature}
|
|
|
2886
|
|
|
2887 *indent()*
|
|
|
2888 indent({lnum}) The result is a Number, which is indent of line {lnum} in the
|
|
|
2889 current buffer. The indent is counted in spaces, the value
|
|
|
2890 of 'tabstop' is relevant. {lnum} is used just like in
|
|
|
2891 |getline()|.
|
|
|
2892 When {lnum} is invalid -1 is returned.
|
|
|
2893
|
|
79
|
2894
|
|
95
|
2895 index({list}, {expr} [, {start} [, {ic}]]) *index()*
|
|
79
|
2896 Return the lowest index in List {list} where the item has a
|
|
|
2897 value equal to {expr}.
|
|
153
|
2898 If {start} is given then start looking at the item with index
|
|
|
2899 {start} (may be negative for an item relative to the end).
|
|
79
|
2900 When {ic} is given and it is non-zero, ignore case. Otherwise
|
|
|
2901 case must match.
|
|
|
2902 -1 is returned when {expr} is not found in {list}.
|
|
|
2903 Example: >
|
|
|
2904 :let idx = index(words, "the")
|
|
87
|
2905 :if index(numbers, 123) >= 0
|
|
79
|
2906
|
|
|
2907
|
|
7
|
2908 input({prompt} [, {text}]) *input()*
|
|
|
2909 The result is a String, which is whatever the user typed on
|
|
|
2910 the command-line. The parameter is either a prompt string, or
|
|
|
2911 a blank string (for no prompt). A '\n' can be used in the
|
|
|
2912 prompt to start a new line. The highlighting set with
|
|
|
2913 |:echohl| is used for the prompt. The input is entered just
|
|
|
2914 like a command-line, with the same editing commands and
|
|
|
2915 mappings. There is a separate history for lines typed for
|
|
|
2916 input().
|
|
|
2917 If the optional {text} is present, this is used for the
|
|
|
2918 default reply, as if the user typed this.
|
|
|
2919 NOTE: This must not be used in a startup file, for the
|
|
|
2920 versions that only run in GUI mode (e.g., the Win32 GUI).
|
|
|
2921 Note: When input() is called from within a mapping it will
|
|
|
2922 consume remaining characters from that mapping, because a
|
|
|
2923 mapping is handled like the characters were typed.
|
|
|
2924 Use |inputsave()| before input() and |inputrestore()|
|
|
|
2925 after input() to avoid that. Another solution is to avoid
|
|
|
2926 that further characters follow in the mapping, e.g., by using
|
|
|
2927 |:execute| or |:normal|.
|
|
|
2928
|
|
|
2929 Example: >
|
|
|
2930 :if input("Coffee or beer? ") == "beer"
|
|
|
2931 : echo "Cheers!"
|
|
|
2932 :endif
|
|
|
2933 < Example with default text: >
|
|
|
2934 :let color = input("Color? ", "white")
|
|
|
2935 < Example with a mapping: >
|
|
|
2936 :nmap \x :call GetFoo()<CR>:exe "/" . Foo<CR>
|
|
|
2937 :function GetFoo()
|
|
|
2938 : call inputsave()
|
|
|
2939 : let g:Foo = input("enter search pattern: ")
|
|
|
2940 : call inputrestore()
|
|
|
2941 :endfunction
|
|
|
2942
|
|
|
2943 inputdialog({prompt} [, {text} [, {cancelreturn}]]) *inputdialog()*
|
|
|
2944 Like input(), but when the GUI is running and text dialogs are
|
|
|
2945 supported, a dialog window pops up to input the text.
|
|
|
2946 Example: >
|
|
|
2947 :let n = inputdialog("value for shiftwidth", &sw)
|
|
|
2948 :if n != ""
|
|
|
2949 : let &sw = n
|
|
|
2950 :endif
|
|
|
2951 < When the dialog is cancelled {cancelreturn} is returned. When
|
|
|
2952 omitted an empty string is returned.
|
|
|
2953 Hitting <Enter> works like pressing the OK button. Hitting
|
|
|
2954 <Esc> works like pressing the Cancel button.
|
|
|
2955
|
|
|
2956 inputrestore() *inputrestore()*
|
|
|
2957 Restore typeahead that was saved with a previous inputsave().
|
|
|
2958 Should be called the same number of times inputsave() is
|
|
|
2959 called. Calling it more often is harmless though.
|
|
|
2960 Returns 1 when there is nothing to restore, 0 otherwise.
|
|
|
2961
|
|
|
2962 inputsave() *inputsave()*
|
|
|
2963 Preserve typeahead (also from mappings) and clear it, so that
|
|
|
2964 a following prompt gets input from the user. Should be
|
|
|
2965 followed by a matching inputrestore() after the prompt. Can
|
|
|
2966 be used several times, in which case there must be just as
|
|
|
2967 many inputrestore() calls.
|
|
|
2968 Returns 1 when out of memory, 0 otherwise.
|
|
|
2969
|
|
|
2970 inputsecret({prompt} [, {text}]) *inputsecret()*
|
|
|
2971 This function acts much like the |input()| function with but
|
|
|
2972 two exceptions:
|
|
|
2973 a) the user's response will be displayed as a sequence of
|
|
|
2974 asterisks ("*") thereby keeping the entry secret, and
|
|
|
2975 b) the user's response will not be recorded on the input
|
|
|
2976 |history| stack.
|
|
|
2977 The result is a String, which is whatever the user actually
|
|
|
2978 typed on the command-line in response to the issued prompt.
|
|
|
2979
|
|
55
|
2980 insert({list}, {item} [, {idx}]) *insert()*
|
|
|
2981 Insert {item} at the start of List {list}.
|
|
|
2982 If {idx} is specified insert {item} before the item with index
|
|
|
2983 {idx}. If {idx} is zero it goes before the first item, just
|
|
|
2984 like omitting {idx}. A negative {idx} is also possible, see
|
|
|
2985 |list-index|. -1 inserts just before the last item.
|
|
236
|
2986 Returns the resulting List. Examples: >
|
|
55
|
2987 :let mylist = insert([2, 3, 5], 1)
|
|
|
2988 :call insert(mylist, 4, -1)
|
|
|
2989 :call insert(mylist, 6, len(mylist))
|
|
82
|
2990 < The last example can be done simpler with |add()|.
|
|
55
|
2991 Note that when {item} is a List it is inserted as a single
|
|
|
2992 item. Use |extend()| to concatenate Lists.
|
|
|
2993
|
|
7
|
2994 isdirectory({directory}) *isdirectory()*
|
|
|
2995 The result is a Number, which is non-zero when a directory
|
|
|
2996 with the name {directory} exists. If {directory} doesn't
|
|
|
2997 exist, or isn't a directory, the result is FALSE. {directory}
|
|
|
2998 is any expression, which is used as a String.
|
|
|
2999
|
|
148
|
3000 islocked({expr}) *islocked()*
|
|
|
3001 The result is a Number, which is non-zero when {expr} is the
|
|
|
3002 name of a locked variable.
|
|
|
3003 {expr} must be the name of a variable, List item or Dictionary
|
|
|
3004 entry, not the variable itself! Example: >
|
|
|
3005 :let alist = [0, ['a', 'b'], 2, 3]
|
|
|
3006 :lockvar 1 alist
|
|
|
3007 :echo islocked('alist') " 1
|
|
|
3008 :echo islocked('alist[1]') " 0
|
|
|
3009
|
|
|
3010 < When {expr} is a variable that does not exist you get an error
|
|
|
3011 message. Use |exists()| to check for existance.
|
|
|
3012
|
|
140
|
3013 items({dict}) *items()*
|
|
|
3014 Return a List with all the key-value pairs of {dict}. Each
|
|
|
3015 List item is a list with two items: the key of a {dict} entry
|
|
|
3016 and the value of this entry. The List is in arbitrary order.
|
|
|
3017
|
|
95
|
3018
|
|
|
3019 join({list} [, {sep}]) *join()*
|
|
|
3020 Join the items in {list} together into one String.
|
|
|
3021 When {sep} is specified it is put in between the items. If
|
|
|
3022 {sep} is omitted a single space is used.
|
|
|
3023 Note that {sep} is not added at the end. You might want to
|
|
|
3024 add it there too: >
|
|
|
3025 let lines = join(mylist, "\n") . "\n"
|
|
|
3026 < String items are used as-is. Lists and Dictionaries are
|
|
|
3027 converted into a string like with |string()|.
|
|
|
3028 The opposite function is |split()|.
|
|
|
3029
|
|
99
|
3030 keys({dict}) *keys()*
|
|
|
3031 Return a List with all the keys of {dict}. The List is in
|
|
|
3032 arbitrary order.
|
|
|
3033
|
|
85
|
3034 *len()* *E701*
|
|
55
|
3035 len({expr}) The result is a Number, which is the length of the argument.
|
|
|
3036 When {expr} is a String or a Number the length in bytes is
|
|
|
3037 used, as with |strlen()|.
|
|
|
3038 When {expr} is a List the number of items in the List is
|
|
|
3039 returned.
|
|
102
|
3040 When {expr} is a Dictionary the number of entries in the
|
|
|
3041 Dictionary is returned.
|
|
55
|
3042 Otherwise an error is given.
|
|
|
3043
|
|
7
|
3044 *libcall()* *E364* *E368*
|
|
|
3045 libcall({libname}, {funcname}, {argument})
|
|
|
3046 Call function {funcname} in the run-time library {libname}
|
|
|
3047 with single argument {argument}.
|
|
|
3048 This is useful to call functions in a library that you
|
|
|
3049 especially made to be used with Vim. Since only one argument
|
|
|
3050 is possible, calling standard library functions is rather
|
|
|
3051 limited.
|
|
|
3052 The result is the String returned by the function. If the
|
|
|
3053 function returns NULL, this will appear as an empty string ""
|
|
|
3054 to Vim.
|
|
|
3055 If the function returns a number, use libcallnr()!
|
|
|
3056 If {argument} is a number, it is passed to the function as an
|
|
|
3057 int; if {argument} is a string, it is passed as a
|
|
|
3058 null-terminated string.
|
|
|
3059 This function will fail in |restricted-mode|.
|
|
|
3060
|
|
|
3061 libcall() allows you to write your own 'plug-in' extensions to
|
|
|
3062 Vim without having to recompile the program. It is NOT a
|
|
|
3063 means to call system functions! If you try to do so Vim will
|
|
|
3064 very probably crash.
|
|
|
3065
|
|
|
3066 For Win32, the functions you write must be placed in a DLL
|
|
|
3067 and use the normal C calling convention (NOT Pascal which is
|
|
|
3068 used in Windows System DLLs). The function must take exactly
|
|
|
3069 one parameter, either a character pointer or a long integer,
|
|
|
3070 and must return a character pointer or NULL. The character
|
|
|
3071 pointer returned must point to memory that will remain valid
|
|
|
3072 after the function has returned (e.g. in static data in the
|
|
|
3073 DLL). If it points to allocated memory, that memory will
|
|
|
3074 leak away. Using a static buffer in the function should work,
|
|
|
3075 it's then freed when the DLL is unloaded.
|
|
|
3076
|
|
|
3077 WARNING: If the function returns a non-valid pointer, Vim may
|
|
|
3078 crash! This also happens if the function returns a number,
|
|
|
3079 because Vim thinks it's a pointer.
|
|
|
3080 For Win32 systems, {libname} should be the filename of the DLL
|
|
|
3081 without the ".DLL" suffix. A full path is only required if
|
|
|
3082 the DLL is not in the usual places.
|
|
|
3083 For Unix: When compiling your own plugins, remember that the
|
|
|
3084 object code must be compiled as position-independent ('PIC').
|
|
|
3085 {only in Win32 on some Unix versions, when the |+libcall|
|
|
|
3086 feature is present}
|
|
|
3087 Examples: >
|
|
|
3088 :echo libcall("libc.so", "getenv", "HOME")
|
|
|
3089 :echo libcallnr("/usr/lib/libc.so", "getpid", "")
|
|
|
3090 <
|
|
|
3091 *libcallnr()*
|
|
|
3092 libcallnr({libname}, {funcname}, {argument})
|
|
|
3093 Just like libcall(), but used for a function that returns an
|
|
|
3094 int instead of a string.
|
|
|
3095 {only in Win32 on some Unix versions, when the |+libcall|
|
|
|
3096 feature is present}
|
|
|
3097 Example (not very useful...): >
|
|
|
3098 :call libcallnr("libc.so", "printf", "Hello World!\n")
|
|
|
3099 :call libcallnr("libc.so", "sleep", 10)
|
|
|
3100 <
|
|
|
3101 *line()*
|
|
|
3102 line({expr}) The result is a Number, which is the line number of the file
|
|
|
3103 position given with {expr}. The accepted positions are:
|
|
|
3104 . the cursor position
|
|
|
3105 $ the last line in the current buffer
|
|
|
3106 'x position of mark x (if the mark is not set, 0 is
|
|
|
3107 returned)
|
|
|
3108 Note that only marks in the current file can be used.
|
|
|
3109 Examples: >
|
|
|
3110 line(".") line number of the cursor
|
|
|
3111 line("'t") line number of mark t
|
|
|
3112 line("'" . marker) line number of mark marker
|
|
|
3113 < *last-position-jump*
|
|
|
3114 This autocommand jumps to the last known position in a file
|
|
|
3115 just after opening it, if the '" mark is set: >
|
|
|
3116 :au BufReadPost * if line("'\"") > 0 && line("'\"") <= line("$") | exe "normal g'\"" | endif
|
|
9
|
3117
|
|
7
|
3118 line2byte({lnum}) *line2byte()*
|
|
|
3119 Return the byte count from the start of the buffer for line
|
|
|
3120 {lnum}. This includes the end-of-line character, depending on
|
|
|
3121 the 'fileformat' option for the current buffer. The first
|
|
|
3122 line returns 1.
|
|
|
3123 This can also be used to get the byte count for the line just
|
|
|
3124 below the last line: >
|
|
|
3125 line2byte(line("$") + 1)
|
|
|
3126 < This is the file size plus one.
|
|
|
3127 When {lnum} is invalid, or the |+byte_offset| feature has been
|
|
|
3128 disabled at compile time, -1 is returned.
|
|
|
3129 Also see |byte2line()|, |go| and |:goto|.
|
|
|
3130
|
|
|
3131 lispindent({lnum}) *lispindent()*
|
|
|
3132 Get the amount of indent for line {lnum} according the lisp
|
|
|
3133 indenting rules, as with 'lisp'.
|
|
|
3134 The indent is counted in spaces, the value of 'tabstop' is
|
|
|
3135 relevant. {lnum} is used just like in |getline()|.
|
|
|
3136 When {lnum} is invalid or Vim was not compiled the
|
|
|
3137 |+lispindent| feature, -1 is returned.
|
|
|
3138
|
|
|
3139 localtime() *localtime()*
|
|
|
3140 Return the current time, measured as seconds since 1st Jan
|
|
|
3141 1970. See also |strftime()| and |getftime()|.
|
|
|
3142
|
|
95
|
3143
|
|
102
|
3144 map({expr}, {string}) *map()*
|
|
|
3145 {expr} must be a List or a Dictionary.
|
|
|
3146 Replace each item in {expr} with the result of evaluating
|
|
|
3147 {string}.
|
|
|
3148 Inside {string} |v:val| has the value of the current item.
|
|
|
3149 For a Dictionary |v:key| has the key of the current item.
|
|
|
3150 Example: >
|
|
|
3151 :call map(mylist, '"> " . v:val . " <"')
|
|
95
|
3152 < This puts "> " before and " <" after each item in "mylist".
|
|
102
|
3153
|
|
158
|
3154 Note that {string} is the result of an expression and is then
|
|
102
|
3155 used as an expression again. Often it is good to use a
|
|
158
|
3156 |literal-string| to avoid having to double backslashes. You
|
|
|
3157 still have to double ' quotes
|
|
102
|
3158
|
|
|
3159 The operation is done in-place. If you want a List or
|
|
|
3160 Dictionary to remain unmodified make a copy first: >
|
|
99
|
3161 :let tlist = map(copy(mylist), ' & . "\t"')
|
|
102
|
3162
|
|
|
3163 < Returns {expr}, the List or Dictionary that was filtered.
|
|
95
|
3164
|
|
|
3165
|
|
7
|
3166 maparg({name}[, {mode}]) *maparg()*
|
|
|
3167 Return the rhs of mapping {name} in mode {mode}. When there
|
|
|
3168 is no mapping for {name}, an empty String is returned.
|
|
|
3169 These characters can be used for {mode}:
|
|
|
3170 "n" Normal
|
|
|
3171 "v" Visual
|
|
|
3172 "o" Operator-pending
|
|
|
3173 "i" Insert
|
|
|
3174 "c" Cmd-line
|
|
|
3175 "l" langmap |language-mapping|
|
|
|
3176 "" Normal, Visual and Operator-pending
|
|
|
3177 When {mode} is omitted, the modes from "" are used.
|
|
|
3178 The {name} can have special key names, like in the ":map"
|
|
|
3179 command. The returned String has special characters
|
|
|
3180 translated like in the output of the ":map" command listing.
|
|
|
3181 The mappings local to the current buffer are checked first,
|
|
|
3182 then the global mappings.
|
|
|
3183
|
|
|
3184 mapcheck({name}[, {mode}]) *mapcheck()*
|
|
|
3185 Check if there is a mapping that matches with {name} in mode
|
|
|
3186 {mode}. See |maparg()| for {mode} and special names in
|
|
|
3187 {name}.
|
|
|
3188 A match happens with a mapping that starts with {name} and
|
|
|
3189 with a mapping which is equal to the start of {name}.
|
|
|
3190
|
|
|
3191 matches mapping "a" "ab" "abc" ~
|
|
|
3192 mapcheck("a") yes yes yes
|
|
|
3193 mapcheck("abc") yes yes yes
|
|
|
3194 mapcheck("ax") yes no no
|
|
|
3195 mapcheck("b") no no no
|
|
|
3196
|
|
|
3197 The difference with maparg() is that mapcheck() finds a
|
|
|
3198 mapping that matches with {name}, while maparg() only finds a
|
|
|
3199 mapping for {name} exactly.
|
|
|
3200 When there is no mapping that starts with {name}, an empty
|
|
|
3201 String is returned. If there is one, the rhs of that mapping
|
|
|
3202 is returned. If there are several mappings that start with
|
|
|
3203 {name}, the rhs of one of them is returned.
|
|
|
3204 The mappings local to the current buffer are checked first,
|
|
|
3205 then the global mappings.
|
|
|
3206 This function can be used to check if a mapping can be added
|
|
|
3207 without being ambiguous. Example: >
|
|
|
3208 :if mapcheck("_vv") == ""
|
|
|
3209 : map _vv :set guifont=7x13<CR>
|
|
|
3210 :endif
|
|
|
3211 < This avoids adding the "_vv" mapping when there already is a
|
|
|
3212 mapping for "_v" or for "_vvv".
|
|
|
3213
|
|
19
|
3214 match({expr}, {pat}[, {start}[, {count}]]) *match()*
|
|
95
|
3215 When {expr} is a List then this returns the index of the first
|
|
|
3216 item where {pat} matches. Each item is used as a String,
|
|
|
3217 Lists and Dictionaries are used as echoed.
|
|
|
3218 Otherwise, {expr} is used as a String. The result is a
|
|
|
3219 Number, which gives the index (byte offset) in {expr} where
|
|
|
3220 {pat} matches.
|
|
|
3221 A match at the first character or List item returns zero.
|
|
19
|
3222 If there is no match -1 is returned.
|
|
|
3223 Example: >
|
|
95
|
3224 :echo match("testing", "ing") " results in 4
|
|
|
3225 :echo match([1, 'x'], '\a') " results in 2
|
|
|
3226 < See |string-match| for how {pat} is used.
|
|
170
|
3227 *strpbrk()*
|
|
|
3228 Vim doesn't have a strpbrk() function. But you can do: >
|
|
|
3229 :let sepidx = match(line, '[.,;: \t]')
|
|
|
3230 < *strcasestr()*
|
|
|
3231 Vim doesn't have a strcasestr() function. But you can add
|
|
|
3232 "\c" to the pattern to ignore case: >
|
|
|
3233 :let idx = match(haystack, '\cneedle')
|
|
|
3234 <
|
|
19
|
3235 When {count} is given use the {count}'th match. When a match
|
|
95
|
3236 is found in a String the search for the next one starts on
|
|
|
3237 character further. Thus this example results in 1: >
|
|
19
|
3238 echo match("testing", "..", 0, 2)
|
|
95
|
3239 < In a List the search continues in the next item.
|
|
|
3240
|
|
|
3241 If {start} is given, the search starts from byte index
|
|
|
3242 {start} in a String or item {start} in a List.
|
|
7
|
3243 The result, however, is still the index counted from the
|
|
236
|
3244 first character/item. Example: >
|
|
7
|
3245 :echo match("testing", "ing", 2)
|
|
|
3246 < result is again "4". >
|
|
|
3247 :echo match("testing", "ing", 4)
|
|
|
3248 < result is again "4". >
|
|
|
3249 :echo match("testing", "t", 2)
|
|
|
3250 < result is "3".
|
|
95
|
3251 For a String, if {start} < 0, it will be set to 0. For a list
|
|
|
3252 the index is counted from the end.
|
|
|
3253 If {start} is out of range (> strlen({expr} for a String or
|
|
|
3254 > len({expr} for a List) -1 is returned.
|
|
|
3255
|
|
7
|
3256 See |pattern| for the patterns that are accepted.
|
|
|
3257 The 'ignorecase' option is used to set the ignore-caseness of
|
|
|
3258 the pattern. 'smartcase' is NOT used. The matching is always
|
|
|
3259 done like 'magic' is set and 'cpoptions' is empty.
|
|
|
3260
|
|
19
|
3261 matchend({expr}, {pat}[, {start}[, {count}]]) *matchend()*
|
|
7
|
3262 Same as match(), but return the index of first character after
|
|
|
3263 the match. Example: >
|
|
|
3264 :echo matchend("testing", "ing")
|
|
|
3265 < results in "7".
|
|
170
|
3266 *strspn()* *strcspn()*
|
|
|
3267 Vim doesn't have a strspn() or strcspn() function, but you can
|
|
|
3268 do it with matchend(): >
|
|
|
3269 :let span = matchend(line, '[a-zA-Z]')
|
|
|
3270 :let span = matchend(line, '[^a-zA-Z]')
|
|
|
3271 < Except that -1 is returned when there are no matches.
|
|
|
3272
|
|
7
|
3273 The {start}, if given, has the same meaning as for match(). >
|
|
|
3274 :echo matchend("testing", "ing", 2)
|
|
|
3275 < results in "7". >
|
|
|
3276 :echo matchend("testing", "ing", 5)
|
|
|
3277 < result is "-1".
|
|
95
|
3278 When {expr} is a List the result is equal to match().
|
|
7
|
3279
|
|
158
|
3280 matchlist({expr}, {pat}[, {start}[, {count}]]) *matchlist()*
|
|
|
3281 Same as match(), but return a List. The first item in the
|
|
|
3282 list is the matched string, same as what matchstr() would
|
|
|
3283 return. Following items are submatches, like "\1", "\2", etc.
|
|
|
3284 in |:substitute|.
|
|
|
3285 When there is no match an empty list is returned.
|
|
|
3286
|
|
19
|
3287 matchstr({expr}, {pat}[, {start}[, {count}]]) *matchstr()*
|
|
7
|
3288 Same as match(), but return the matched string. Example: >
|
|
|
3289 :echo matchstr("testing", "ing")
|
|
|
3290 < results in "ing".
|
|
|
3291 When there is no match "" is returned.
|
|
|
3292 The {start}, if given, has the same meaning as for match(). >
|
|
|
3293 :echo matchstr("testing", "ing", 2)
|
|
|
3294 < results in "ing". >
|
|
|
3295 :echo matchstr("testing", "ing", 5)
|
|
|
3296 < result is "".
|
|
95
|
3297 When {expr} is a List then the matching item is returned.
|
|
|
3298 The type isn't changed, it's not necessarily a String.
|
|
7
|
3299
|
|
87
|
3300 *max()*
|
|
|
3301 max({list}) Return the maximum value of all items in {list}.
|
|
|
3302 If {list} is not a list or one of the items in {list} cannot
|
|
|
3303 be used as a Number this results in an error.
|
|
|
3304 An empty List results in zero.
|
|
|
3305
|
|
|
3306 *min()*
|
|
|
3307 min({list}) Return the minumum value of all items in {list}.
|
|
|
3308 If {list} is not a list or one of the items in {list} cannot
|
|
|
3309 be used as a Number this results in an error.
|
|
|
3310 An empty List results in zero.
|
|
|
3311
|
|
168
|
3312 *mkdir()* *E749*
|
|
|
3313 mkdir({name} [, {path} [, {prot}]])
|
|
|
3314 Create directory {name}.
|
|
|
3315 If {path} is "p" then intermediate directories are created as
|
|
|
3316 necessary. Otherwise it must be "".
|
|
|
3317 If {prot} is given it is used to set the protection bits of
|
|
|
3318 the new directory. The default is 0755 (rwxr-xr-x: r/w for
|
|
|
3319 the user readable for others). Use 0700 to make it unreadable
|
|
|
3320 for others.
|
|
|
3321 This function is not available in the |sandbox|.
|
|
|
3322 Not available on all systems. To check use: >
|
|
|
3323 :if exists("*mkdir")
|
|
|
3324 <
|
|
7
|
3325 *mode()*
|
|
|
3326 mode() Return a string that indicates the current mode:
|
|
|
3327 n Normal
|
|
|
3328 v Visual by character
|
|
|
3329 V Visual by line
|
|
|
3330 CTRL-V Visual blockwise
|
|
|
3331 s Select by character
|
|
|
3332 S Select by line
|
|
|
3333 CTRL-S Select blockwise
|
|
|
3334 i Insert
|
|
|
3335 R Replace
|
|
|
3336 c Command-line
|
|
|
3337 r Hit-enter prompt
|
|
|
3338 This is useful in the 'statusline' option. In most other
|
|
|
3339 places it always returns "c" or "n".
|
|
|
3340
|
|
|
3341 nextnonblank({lnum}) *nextnonblank()*
|
|
|
3342 Return the line number of the first line at or below {lnum}
|
|
|
3343 that is not blank. Example: >
|
|
|
3344 if getline(nextnonblank(1)) =~ "Java"
|
|
|
3345 < When {lnum} is invalid or there is no non-blank line at or
|
|
|
3346 below it, zero is returned.
|
|
|
3347 See also |prevnonblank()|.
|
|
|
3348
|
|
|
3349 nr2char({expr}) *nr2char()*
|
|
|
3350 Return a string with a single character, which has the number
|
|
|
3351 value {expr}. Examples: >
|
|
|
3352 nr2char(64) returns "@"
|
|
|
3353 nr2char(32) returns " "
|
|
|
3354 < The current 'encoding' is used. Example for "utf-8": >
|
|
|
3355 nr2char(300) returns I with bow character
|
|
|
3356 < Note that a NUL character in the file is specified with
|
|
|
3357 nr2char(10), because NULs are represented with newline
|
|
|
3358 characters. nr2char(0) is a real NUL and terminates the
|
|
119
|
3359 string, thus results in an empty string.
|
|
7
|
3360
|
|
449
|
3361 printf({fmt}, {expr1} ...) *printf()*
|
|
|
3362 Return a String with {fmt}, where "%" items are replaced by
|
|
|
3363 the formatted form of their respective arguments. Example: >
|
|
452
|
3364 printf("%4d: E%d %.30s", lnum, errno, msg)
|
|
449
|
3365 < May result in:
|
|
452
|
3366 " 99: E42 asdfasdfasdfasdfasdfasdfasdfas" ~
|
|
449
|
3367
|
|
|
3368 Often used items are:
|
|
|
3369 %s string
|
|
|
3370 %6s string right-aligned in 6 characters
|
|
452
|
3371 %c single byte
|
|
449
|
3372 %d decimal number
|
|
|
3373 %5d decimal number padded with spaces to 5 characters
|
|
|
3374 %x hex number
|
|
|
3375 %04x hex number padded with zeros to at least 4 characters
|
|
|
3376 %X hex number using upper case letters
|
|
|
3377 %o octal number
|
|
|
3378 %% the % character
|
|
|
3379
|
|
|
3380 Conversion specifications start with '%' and end with the
|
|
|
3381 conversion type. All other characters are copied unchanged to
|
|
|
3382 the result.
|
|
|
3383
|
|
|
3384 The "%" starts a conversion specification. The following
|
|
452
|
3385 arguments appear in sequence:
|
|
|
3386
|
|
|
3387 % [flags] [field-width] [.precision] type
|
|
|
3388
|
|
|
3389 flags
|
|
|
3390 Zero or more of the following flags:
|
|
|
3391
|
|
449
|
3392 # The value should be converted to an "alternate
|
|
|
3393 form". For c, d, and s conversions, this option
|
|
|
3394 has no effect. For o conversions, the precision
|
|
|
3395 of the number is increased to force the first
|
|
|
3396 character of the output string to a zero (except
|
|
|
3397 if a zero value is printed with an explicit
|
|
|
3398 precision of zero).
|
|
|
3399 For x and X conversions, a non-zero result has
|
|
|
3400 the string "0x" (or "0X" for X conversions)
|
|
|
3401 prepended to it.
|
|
452
|
3402
|
|
449
|
3403 0 (zero) Zero padding. For all conversions the converted
|
|
|
3404 value is padded on the left with zeros rather
|
|
|
3405 than blanks. If a precision is given with a
|
|
|
3406 numeric conversion (d, o, x, and X), the 0 flag
|
|
|
3407 is ignored.
|
|
452
|
3408
|
|
449
|
3409 - A negative field width flag; the converted value
|
|
|
3410 is to be left adjusted on the field boundary.
|
|
|
3411 The converted value is padded on the right with
|
|
|
3412 blanks, rather than on the left with blanks or
|
|
|
3413 zeros. A - overrides a 0 if both are given.
|
|
452
|
3414
|
|
449
|
3415 ' ' (space) A blank should be left before a positive
|
|
|
3416 number produced by a signed conversion (d).
|
|
452
|
3417
|
|
449
|
3418 + A sign must always be placed before a number
|
|
|
3419 produced by a signed conversion. A + overrides
|
|
|
3420 a space if both are used.
|
|
452
|
3421
|
|
|
3422 field-width
|
|
|
3423 An optional decimal digit string specifying a minimum
|
|
|
3424 field width. If the converted value has fewer
|
|
|
3425 characters than the field width, it will be padded
|
|
|
3426 with spaces on the left (or right, if the
|
|
|
3427 left-adjustment flag has been given) to fill out the
|
|
|
3428 field width.
|
|
|
3429
|
|
|
3430 .precision
|
|
|
3431 An optional precision, in the form of a period '.'
|
|
|
3432 followed by an optional digit string. If the digit
|
|
|
3433 string is omitted, the precision is taken as zero.
|
|
|
3434 This gives the minimum number of digits to appear for
|
|
|
3435 d, o, x, and X conversions, or the maximum number of
|
|
|
3436 characters to be printed from a string for s
|
|
|
3437 conversions.
|
|
|
3438
|
|
|
3439 type
|
|
|
3440 A character that specifies the type of conversion to
|
|
|
3441 be applied, see below.
|
|
|
3442
|
|
449
|
3443 A field width or precision, or both, may be indicated by an
|
|
|
3444 asterisk '*' instead of a digit string. In this case, a
|
|
|
3445 Number argument supplies the field width or precision. A
|
|
|
3446 negative field width is treated as a left adjustment flag
|
|
|
3447 followed by a positive field width; a negative precision is
|
|
|
3448 treated as though it were missing. Example: >
|
|
452
|
3449 :echo printf("%d: %.*s", nr, width, line)
|
|
449
|
3450 < This limits the length of the text used from "line" to
|
|
452
|
3451 "width" bytes.
|
|
449
|
3452
|
|
|
3453 The conversion specifiers and their meanings are:
|
|
452
|
3454
|
|
449
|
3455 doxX The Number argument is converted to signed decimal
|
|
|
3456 (d), unsigned octal (o), or unsigned hexadecimal (x
|
|
|
3457 and X) notation. The letters "abcdef" are used for
|
|
|
3458 x conversions; the letters "ABCDEF" are used for X
|
|
452
|
3459 conversions.
|
|
|
3460 The precision, if any, gives the minimum number of
|
|
|
3461 digits that must appear; if the converted value
|
|
|
3462 requires fewer digits, it is padded on the left with
|
|
|
3463 zeros.
|
|
|
3464 In no case does a non-existent or small field width
|
|
|
3465 cause truncation of a numeric field; if the result of
|
|
|
3466 a conversion is wider than the field width, the field
|
|
|
3467 is expanded to contain the conversion result.
|
|
|
3468
|
|
|
3469 c The Number argument is converted to a byte, and the
|
|
|
3470 resulting character is written.
|
|
|
3471
|
|
|
3472 s The text of the String argument is used. If a
|
|
|
3473 precision is specified, no more bytes than the number
|
|
|
3474 specified are used.
|
|
|
3475
|
|
449
|
3476 % A '%' is written. No argument is converted. The
|
|
|
3477 complete conversion specification is "%%".
|
|
452
|
3478
|
|
449
|
3479 Each argument can be Number or String and is converted
|
|
452
|
3480 automatically to fit the conversion specifier. Any other
|
|
|
3481 argument type results in an error message.
|
|
449
|
3482
|
|
459
|
3483 *E766* *E767*
|
|
449
|
3484 The number of {exprN} arguments must exactly match the number
|
|
|
3485 of "%" items. If there are not sufficient or too many
|
|
452
|
3486 arguments an error is given. Up to 18 arguments can be used.
|
|
449
|
3487
|
|
|
3488
|
|
7
|
3489 prevnonblank({lnum}) *prevnonblank()*
|
|
|
3490 Return the line number of the first line at or above {lnum}
|
|
|
3491 that is not blank. Example: >
|
|
|
3492 let ind = indent(prevnonblank(v:lnum - 1))
|
|
|
3493 < When {lnum} is invalid or there is no non-blank line at or
|
|
|
3494 above it, zero is returned.
|
|
|
3495 Also see |nextnonblank()|.
|
|
|
3496
|
|
114
|
3497 *E726* *E727*
|
|
99
|
3498 range({expr} [, {max} [, {stride}]]) *range()*
|
|
|
3499 Returns a List with Numbers:
|
|
|
3500 - If only {expr} is specified: [0, 1, ..., {expr} - 1]
|
|
|
3501 - If {max} is specified: [{expr}, {expr} + 1, ..., {max}]
|
|
|
3502 - If {stride} is specified: [{expr}, {expr} + {stride}, ...,
|
|
|
3503 {max}] (increasing {expr} with {stride} each time, not
|
|
|
3504 producing a value past {max}).
|
|
336
|
3505 When the maximum is one before the start the result is an
|
|
|
3506 empty list. When the maximum is more than one before the
|
|
|
3507 start this is an error.
|
|
99
|
3508 Examples: >
|
|
|
3509 range(4) " [0, 1, 2, 3]
|
|
|
3510 range(2, 4) " [2, 3, 4]
|
|
|
3511 range(2, 9, 3) " [2, 5, 8]
|
|
|
3512 range(2, -2, -1) " [2, 1, 0, -1, -2]
|
|
336
|
3513 range(0) " []
|
|
|
3514 range(2, 0) " error!
|
|
99
|
3515 <
|
|
158
|
3516 *readfile()*
|
|
168
|
3517 readfile({fname} [, {binary} [, {max}]])
|
|
158
|
3518 Read file {fname} and return a List, each line of the file as
|
|
|
3519 an item. Lines broken at NL characters. Macintosh files
|
|
|
3520 separated with CR will result in a single long line (unless a
|
|
|
3521 NL appears somewhere).
|
|
|
3522 When {binary} is equal to "b" binary mode is used:
|
|
|
3523 - When the last line ends in a NL an extra empty list item is
|
|
|
3524 added.
|
|
|
3525 - No CR characters are removed.
|
|
|
3526 Otherwise:
|
|
|
3527 - CR characters that appear before a NL are removed.
|
|
|
3528 - Whether the last line ends in a NL or not does not matter.
|
|
|
3529 All NUL characters are replaced with a NL character.
|
|
168
|
3530 When {max} is given this specifies the maximum number of lines
|
|
|
3531 to be read. Useful if you only want to check the first ten
|
|
|
3532 lines of a file: >
|
|
|
3533 :for line in readfile(fname, '', 10)
|
|
|
3534 : if line =~ 'Date' | echo line | endif
|
|
|
3535 :endfor
|
|
233
|
3536 < When {max} is negative -{max} lines from the end of the file
|
|
|
3537 are returned, or as many as there are.
|
|
|
3538 When {max} is zero the result is an empty list.
|
|
168
|
3539 Note that without {max} the whole file is read into memory.
|
|
|
3540 Also note that there is no recognition of encoding. Read a
|
|
|
3541 file into a buffer if you need to.
|
|
158
|
3542 When the file can't be opened an error message is given and
|
|
|
3543 the result is an empty list.
|
|
|
3544 Also see |writefile()|.
|
|
|
3545
|
|
7
|
3546 *remote_expr()* *E449*
|
|
|
3547 remote_expr({server}, {string} [, {idvar}])
|
|
|
3548 Send the {string} to {server}. The string is sent as an
|
|
|
3549 expression and the result is returned after evaluation.
|
|
|
3550 If {idvar} is present, it is taken as the name of a
|
|
|
3551 variable and a {serverid} for later use with
|
|
|
3552 remote_read() is stored there.
|
|
|
3553 See also |clientserver| |RemoteReply|.
|
|
|
3554 This function is not available in the |sandbox|.
|
|
|
3555 {only available when compiled with the |+clientserver| feature}
|
|
|
3556 Note: Any errors will cause a local error message to be issued
|
|
|
3557 and the result will be the empty string.
|
|
|
3558 Examples: >
|
|
|
3559 :echo remote_expr("gvim", "2+2")
|
|
|
3560 :echo remote_expr("gvim1", "b:current_syntax")
|
|
|
3561 <
|
|
|
3562
|
|
|
3563 remote_foreground({server}) *remote_foreground()*
|
|
|
3564 Move the Vim server with the name {server} to the foreground.
|
|
|
3565 This works like: >
|
|
|
3566 remote_expr({server}, "foreground()")
|
|
|
3567 < Except that on Win32 systems the client does the work, to work
|
|
|
3568 around the problem that the OS doesn't always allow the server
|
|
|
3569 to bring itself to the foreground.
|
|
|
3570 This function is not available in the |sandbox|.
|
|
|
3571 {only in the Win32, Athena, Motif and GTK GUI versions and the
|
|
|
3572 Win32 console version}
|
|
|
3573
|
|
|
3574
|
|
|
3575 remote_peek({serverid} [, {retvar}]) *remote_peek()*
|
|
|
3576 Returns a positive number if there are available strings
|
|
|
3577 from {serverid}. Copies any reply string into the variable
|
|
|
3578 {retvar} if specified. {retvar} must be a string with the
|
|
|
3579 name of a variable.
|
|
|
3580 Returns zero if none are available.
|
|
|
3581 Returns -1 if something is wrong.
|
|
|
3582 See also |clientserver|.
|
|
|
3583 This function is not available in the |sandbox|.
|
|
|
3584 {only available when compiled with the |+clientserver| feature}
|
|
|
3585 Examples: >
|
|
|
3586 :let repl = ""
|
|
|
3587 :echo "PEEK: ".remote_peek(id, "repl").": ".repl
|
|
|
3588
|
|
|
3589 remote_read({serverid}) *remote_read()*
|
|
|
3590 Return the oldest available reply from {serverid} and consume
|
|
|
3591 it. It blocks until a reply is available.
|
|
|
3592 See also |clientserver|.
|
|
|
3593 This function is not available in the |sandbox|.
|
|
|
3594 {only available when compiled with the |+clientserver| feature}
|
|
|
3595 Example: >
|
|
|
3596 :echo remote_read(id)
|
|
|
3597 <
|
|
|
3598 *remote_send()* *E241*
|
|
|
3599 remote_send({server}, {string} [, {idvar}])
|
|
22
|
3600 Send the {string} to {server}. The string is sent as input
|
|
|
3601 keys and the function returns immediately. At the Vim server
|
|
|
3602 the keys are not mapped |:map|.
|
|
7
|
3603 If {idvar} is present, it is taken as the name of a
|
|
|
3604 variable and a {serverid} for later use with
|
|
|
3605 remote_read() is stored there.
|
|
|
3606 See also |clientserver| |RemoteReply|.
|
|
|
3607 This function is not available in the |sandbox|.
|
|
|
3608 {only available when compiled with the |+clientserver| feature}
|
|
|
3609 Note: Any errors will be reported in the server and may mess
|
|
|
3610 up the display.
|
|
|
3611 Examples: >
|
|
|
3612 :echo remote_send("gvim", ":DropAndReply ".file, "serverid").
|
|
|
3613 \ remote_read(serverid)
|
|
|
3614
|
|
|
3615 :autocmd NONE RemoteReply *
|
|
|
3616 \ echo remote_read(expand("<amatch>"))
|
|
|
3617 :echo remote_send("gvim", ":sleep 10 | echo ".
|
|
|
3618 \ 'server2client(expand("<client>"), "HELLO")<CR>')
|
|
82
|
3619 <
|
|
79
|
3620 remove({list}, {idx} [, {end}]) *remove()*
|
|
|
3621 Without {end}: Remove the item at {idx} from List {list} and
|
|
|
3622 return it.
|
|
|
3623 With {end}: Remove items from {idx} to {end} (inclusive) and
|
|
|
3624 return a list with these items. When {idx} points to the same
|
|
|
3625 item as {end} a list with one item is returned. When {end}
|
|
|
3626 points to an item before {idx} this is an error.
|
|
|
3627 See |list-index| for possible values of {idx} and {end}.
|
|
55
|
3628 Example: >
|
|
|
3629 :echo "last item: " . remove(mylist, -1)
|
|
79
|
3630 :call remove(mylist, 0, 9)
|
|
99
|
3631 remove({dict}, {key})
|
|
|
3632 Remove the entry from {dict} with key {key}. Example: >
|
|
|
3633 :echo "removed " . remove(dict, "one")
|
|
|
3634 < If there is no {key} in {dict} this is an error.
|
|
|
3635
|
|
|
3636 Use |delete()| to remove a file.
|
|
55
|
3637
|
|
7
|
3638 rename({from}, {to}) *rename()*
|
|
|
3639 Rename the file by the name {from} to the name {to}. This
|
|
|
3640 should also work to move files across file systems. The
|
|
|
3641 result is a Number, which is 0 if the file was renamed
|
|
|
3642 successfully, and non-zero when the renaming failed.
|
|
|
3643 This function is not available in the |sandbox|.
|
|
|
3644
|
|
18
|
3645 repeat({expr}, {count}) *repeat()*
|
|
|
3646 Repeat {expr} {count} times and return the concatenated
|
|
|
3647 result. Example: >
|
|
|
3648 :let seperator = repeat('-', 80)
|
|
|
3649 < When {count} is zero or negative the result is empty.
|
|
87
|
3650 When {expr} is a List the result is {expr} concatenated
|
|
236
|
3651 {count} times. Example: >
|
|
79
|
3652 :let longlist = repeat(['a', 'b'], 3)
|
|
|
3653 < Results in ['a', 'b', 'a', 'b', 'a', 'b'].
|
|
18
|
3654
|
|
82
|
3655
|
|
7
|
3656 resolve({filename}) *resolve()* *E655*
|
|
|
3657 On MS-Windows, when {filename} is a shortcut (a .lnk file),
|
|
|
3658 returns the path the shortcut points to in a simplified form.
|
|
|
3659 On Unix, repeat resolving symbolic links in all path
|
|
|
3660 components of {filename} and return the simplified result.
|
|
|
3661 To cope with link cycles, resolving of symbolic links is
|
|
|
3662 stopped after 100 iterations.
|
|
|
3663 On other systems, return the simplified {filename}.
|
|
|
3664 The simplification step is done as by |simplify()|.
|
|
|
3665 resolve() keeps a leading path component specifying the
|
|
|
3666 current directory (provided the result is still a relative
|
|
|
3667 path name) and also keeps a trailing path separator.
|
|
|
3668
|
|
82
|
3669 *reverse()*
|
|
|
3670 reverse({list}) Reverse the order of items in {list} in-place. Returns
|
|
|
3671 {list}.
|
|
|
3672 If you want a list to remain unmodified make a copy first: >
|
|
|
3673 :let revlist = reverse(copy(mylist))
|
|
|
3674
|
|
7
|
3675 search({pattern} [, {flags}]) *search()*
|
|
|
3676 Search for regexp pattern {pattern}. The search starts at the
|
|
119
|
3677 cursor position (you can use |cursor()| to set it).
|
|
7
|
3678 {flags} is a String, which can contain these character flags:
|
|
|
3679 'b' search backward instead of forward
|
|
20
|
3680 'n' do Not move the cursor
|
|
7
|
3681 'w' wrap around the end of the file
|
|
|
3682 'W' don't wrap around the end of the file
|
|
444
|
3683 's' set the ' mark at the previous location of the
|
|
|
3684 cursor.
|
|
7
|
3685 If neither 'w' or 'W' is given, the 'wrapscan' option applies.
|
|
|
3686
|
|
444
|
3687 If the 's' flag is supplied, the ' mark is set, only if the
|
|
|
3688 cursor is moved. The 's' flag cannot be combined with the 'n'
|
|
|
3689 flag.
|
|
|
3690
|
|
20
|
3691 When a match has been found its line number is returned.
|
|
|
3692 The cursor will be positioned at the match, unless the 'n'
|
|
|
3693 flag is used).
|
|
|
3694 If there is no match a 0 is returned and the cursor doesn't
|
|
|
3695 move. No error message is given.
|
|
7
|
3696
|
|
|
3697 Example (goes over all files in the argument list): >
|
|
|
3698 :let n = 1
|
|
|
3699 :while n <= argc() " loop over all files in arglist
|
|
|
3700 : exe "argument " . n
|
|
|
3701 : " start at the last char in the file and wrap for the
|
|
|
3702 : " first search to find match at start of file
|
|
|
3703 : normal G$
|
|
|
3704 : let flags = "w"
|
|
|
3705 : while search("foo", flags) > 0
|
|
|
3706 : s/foo/bar/g
|
|
|
3707 : let flags = "W"
|
|
|
3708 : endwhile
|
|
|
3709 : update " write the file if modified
|
|
|
3710 : let n = n + 1
|
|
|
3711 :endwhile
|
|
|
3712 <
|
|
504
|
3713
|
|
|
3714 searchdecl({name} [, {global}]) *searchdecl()*
|
|
|
3715 Search for the declaration of {name}. Without {global} or
|
|
|
3716 with a zero {global} argument this works like |gd|. With a
|
|
|
3717 non-zero {global} argument it works like |gD|.
|
|
|
3718 Moves the cursor to the found match.
|
|
|
3719 Returns zero for success, non-zero for failure.
|
|
|
3720 Example: >
|
|
|
3721 if searchdecl('myvar') == 0
|
|
|
3722 echo getline('.')
|
|
|
3723 endif
|
|
|
3724 <
|
|
7
|
3725 *searchpair()*
|
|
|
3726 searchpair({start}, {middle}, {end} [, {flags} [, {skip}]])
|
|
|
3727 Search for the match of a nested start-end pair. This can be
|
|
|
3728 used to find the "endif" that matches an "if", while other
|
|
|
3729 if/endif pairs in between are ignored.
|
|
|
3730 The search starts at the cursor. If a match is found, the
|
|
|
3731 cursor is positioned at it and the line number is returned.
|
|
|
3732 If no match is found 0 or -1 is returned and the cursor
|
|
|
3733 doesn't move. No error message is given.
|
|
|
3734
|
|
|
3735 {start}, {middle} and {end} are patterns, see |pattern|. They
|
|
|
3736 must not contain \( \) pairs. Use of \%( \) is allowed. When
|
|
|
3737 {middle} is not empty, it is found when searching from either
|
|
|
3738 direction, but only when not in a nested start-end pair. A
|
|
|
3739 typical use is: >
|
|
|
3740 searchpair('\<if\>', '\<else\>', '\<endif\>')
|
|
|
3741 < By leaving {middle} empty the "else" is skipped.
|
|
|
3742
|
|
|
3743 {flags} are used like with |search()|. Additionally:
|
|
|
3744 'n' do Not move the cursor
|
|
|
3745 'r' Repeat until no more matches found; will find the
|
|
|
3746 outer pair
|
|
|
3747 'm' return number of Matches instead of line number with
|
|
|
3748 the match; will only be > 1 when 'r' is used.
|
|
|
3749
|
|
|
3750 When a match for {start}, {middle} or {end} is found, the
|
|
|
3751 {skip} expression is evaluated with the cursor positioned on
|
|
|
3752 the start of the match. It should return non-zero if this
|
|
|
3753 match is to be skipped. E.g., because it is inside a comment
|
|
|
3754 or a string.
|
|
|
3755 When {skip} is omitted or empty, every match is accepted.
|
|
|
3756 When evaluating {skip} causes an error the search is aborted
|
|
|
3757 and -1 returned.
|
|
|
3758
|
|
|
3759 The value of 'ignorecase' is used. 'magic' is ignored, the
|
|
|
3760 patterns are used like it's on.
|
|
|
3761
|
|
|
3762 The search starts exactly at the cursor. A match with
|
|
|
3763 {start}, {middle} or {end} at the next character, in the
|
|
|
3764 direction of searching, is the first one found. Example: >
|
|
|
3765 if 1
|
|
|
3766 if 2
|
|
|
3767 endif 2
|
|
|
3768 endif 1
|
|
|
3769 < When starting at the "if 2", with the cursor on the "i", and
|
|
|
3770 searching forwards, the "endif 2" is found. When starting on
|
|
|
3771 the character just before the "if 2", the "endif 1" will be
|
|
|
3772 found. That's because the "if 2" will be found first, and
|
|
|
3773 then this is considered to be a nested if/endif from "if 2" to
|
|
|
3774 "endif 2".
|
|
|
3775 When searching backwards and {end} is more than one character,
|
|
|
3776 it may be useful to put "\zs" at the end of the pattern, so
|
|
|
3777 that when the cursor is inside a match with the end it finds
|
|
|
3778 the matching start.
|
|
|
3779
|
|
|
3780 Example, to find the "endif" command in a Vim script: >
|
|
|
3781
|
|
|
3782 :echo searchpair('\<if\>', '\<el\%[seif]\>', '\<en\%[dif]\>', 'W',
|
|
|
3783 \ 'getline(".") =~ "^\\s*\""')
|
|
|
3784
|
|
|
3785 < The cursor must be at or after the "if" for which a match is
|
|
|
3786 to be found. Note that single-quote strings are used to avoid
|
|
|
3787 having to double the backslashes. The skip expression only
|
|
|
3788 catches comments at the start of a line, not after a command.
|
|
|
3789 Also, a word "en" or "if" halfway a line is considered a
|
|
|
3790 match.
|
|
|
3791 Another example, to search for the matching "{" of a "}": >
|
|
|
3792
|
|
|
3793 :echo searchpair('{', '', '}', 'bW')
|
|
|
3794
|
|
|
3795 < This works when the cursor is at or before the "}" for which a
|
|
|
3796 match is to be found. To reject matches that syntax
|
|
|
3797 highlighting recognized as strings: >
|
|
|
3798
|
|
|
3799 :echo searchpair('{', '', '}', 'bW',
|
|
|
3800 \ 'synIDattr(synID(line("."), col("."), 0), "name") =~? "string"')
|
|
|
3801 <
|
|
|
3802 server2client( {clientid}, {string}) *server2client()*
|
|
|
3803 Send a reply string to {clientid}. The most recent {clientid}
|
|
|
3804 that sent a string can be retrieved with expand("<client>").
|
|
|
3805 {only available when compiled with the |+clientserver| feature}
|
|
|
3806 Note:
|
|
|
3807 This id has to be stored before the next command can be
|
|
236
|
3808 received. I.e. before returning from the received command and
|
|
7
|
3809 before calling any commands that waits for input.
|
|
|
3810 See also |clientserver|.
|
|
|
3811 Example: >
|
|
|
3812 :echo server2client(expand("<client>"), "HELLO")
|
|
|
3813 <
|
|
|
3814 serverlist() *serverlist()*
|
|
|
3815 Return a list of available server names, one per line.
|
|
|
3816 When there are no servers or the information is not available
|
|
|
3817 an empty string is returned. See also |clientserver|.
|
|
|
3818 {only available when compiled with the |+clientserver| feature}
|
|
|
3819 Example: >
|
|
|
3820 :echo serverlist()
|
|
|
3821 <
|
|
|
3822 setbufvar({expr}, {varname}, {val}) *setbufvar()*
|
|
|
3823 Set option or local variable {varname} in buffer {expr} to
|
|
|
3824 {val}.
|
|
|
3825 This also works for a global or local window option, but it
|
|
|
3826 doesn't work for a global or local window variable.
|
|
|
3827 For a local window option the global value is unchanged.
|
|
|
3828 For the use of {expr}, see |bufname()| above.
|
|
|
3829 Note that the variable name without "b:" must be used.
|
|
|
3830 Examples: >
|
|
|
3831 :call setbufvar(1, "&mod", 1)
|
|
|
3832 :call setbufvar("todo", "myvar", "foobar")
|
|
|
3833 < This function is not available in the |sandbox|.
|
|
|
3834
|
|
|
3835 setcmdpos({pos}) *setcmdpos()*
|
|
|
3836 Set the cursor position in the command line to byte position
|
|
|
3837 {pos}. The first position is 1.
|
|
|
3838 Use |getcmdpos()| to obtain the current position.
|
|
|
3839 Only works while editing the command line, thus you must use
|
|
99
|
3840 |c_CTRL-\_e|, |c_CTRL-R_=| or |c_CTRL-R_CTRL-R| with '='. For
|
|
|
3841 |c_CTRL-\_e| and |c_CTRL-R_CTRL-R| with '=' the position is
|
|
|
3842 set after the command line is set to the expression. For
|
|
|
3843 |c_CTRL-R_=| it is set after evaluating the expression but
|
|
|
3844 before inserting the resulting text.
|
|
7
|
3845 When the number is too big the cursor is put at the end of the
|
|
|
3846 line. A number smaller than one has undefined results.
|
|
|
3847 Returns 0 when successful, 1 when not editing the command
|
|
|
3848 line.
|
|
|
3849
|
|
|
3850 setline({lnum}, {line}) *setline()*
|
|
236
|
3851 Set line {lnum} of the current buffer to {line}.
|
|
|
3852 {lnum} is used like with |getline()|.
|
|
282
|
3853 When {lnum} is just below the last line the {line} will be
|
|
|
3854 added as a new line.
|
|
236
|
3855 If this succeeds, 0 is returned. If this fails (most likely
|
|
|
3856 because {lnum} is invalid) 1 is returned. Example: >
|
|
7
|
3857 :call setline(5, strftime("%c"))
|
|
282
|
3858 < When {line} is a List then line {lnum} and following lines
|
|
|
3859 will be set to the items in the list. Example: >
|
|
|
3860 :call setline(5, ['aaa', 'bbb', 'ccc'])
|
|
|
3861 < This is equivalent to: >
|
|
|
3862 :for [n, l] in [[5, 6, 7], ['aaa', 'bbb', 'ccc']]
|
|
|
3863 : call setline(n, l)
|
|
|
3864 :endfor
|
|
7
|
3865 < Note: The '[ and '] marks are not set.
|
|
|
3866
|
|
230
|
3867
|
|
277
|
3868 setqflist({list} [, {action}]) *setqflist()*
|
|
230
|
3869 Creates a quickfix list using the items in {list}. Each item
|
|
|
3870 in {list} is a dictionary. Non-dictionary items in {list} are
|
|
|
3871 ignored. Each dictionary item can contain the following
|
|
|
3872 entries:
|
|
|
3873
|
|
|
3874 filename name of a file
|
|
|
3875 lnum line number in the file
|
|
233
|
3876 pattern search pattern used to locate the error
|
|
230
|
3877 col column number
|
|
233
|
3878 vcol when non-zero: "col" is visual column
|
|
|
3879 when zero: "col" is byte index
|
|
|
3880 nr error number
|
|
230
|
3881 text description of the error
|
|
233
|
3882 type single-character error type, 'E', 'W', etc.
|
|
|
3883
|
|
|
3884 The "col", "vcol", "nr", "type" and "text" entries are
|
|
|
3885 optional. Either "lnum" or "pattern" entry can be used to
|
|
|
3886 locate a matching error line.
|
|
230
|
3887 If the "filename" entry is not present or neither the "lnum"
|
|
|
3888 or "pattern" entries are present, then the item will not be
|
|
|
3889 handled as an error line.
|
|
|
3890 If both "pattern" and "lnum" are present then "pattern" will
|
|
|
3891 be used.
|
|
|
3892
|
|
277
|
3893 If {action} is set to 'a', then the items from {list} are
|
|
|
3894 added to the existing quickfix list. If there is no existing
|
|
|
3895 list, then a new list is created. If {action} is set to 'r',
|
|
|
3896 then the items from the current quickfix list are replaced
|
|
|
3897 with the items from {list}. If {action} is not present or is
|
|
|
3898 set to ' ', then a new list is created.
|
|
|
3899
|
|
230
|
3900 Returns zero for success, -1 for failure.
|
|
|
3901
|
|
|
3902 This function can be used to create a quickfix list
|
|
|
3903 independent of the 'errorformat' setting. Use a command like
|
|
|
3904 ":cc 1" to jump to the first position.
|
|
|
3905
|
|
|
3906
|
|
7
|
3907 *setreg()*
|
|
|
3908 setreg({regname}, {value} [,{options}])
|
|
|
3909 Set the register {regname} to {value}.
|
|
|
3910 If {options} contains "a" or {regname} is upper case,
|
|
|
3911 then the value is appended.
|
|
|
3912 {options} can also contains a register type specification:
|
|
|
3913 "c" or "v" |characterwise| mode
|
|
|
3914 "l" or "V" |linewise| mode
|
|
|
3915 "b" or "<CTRL-V>" |blockwise-visual| mode
|
|
|
3916 If a number immediately follows "b" or "<CTRL-V>" then this is
|
|
|
3917 used as the width of the selection - if it is not specified
|
|
|
3918 then the width of the block is set to the number of characters
|
|
|
3919 in the longest line (counting a <TAB> as 1 character).
|
|
|
3920
|
|
|
3921 If {options} contains no register settings, then the default
|
|
|
3922 is to use character mode unless {value} ends in a <NL>.
|
|
|
3923 Setting the '=' register is not possible.
|
|
|
3924 Returns zero for success, non-zero for failure.
|
|
|
3925
|
|
|
3926 Examples: >
|
|
|
3927 :call setreg(v:register, @*)
|
|
|
3928 :call setreg('*', @%, 'ac')
|
|
|
3929 :call setreg('a', "1\n2\n3", 'b5')
|
|
|
3930
|
|
|
3931 < This example shows using the functions to save and restore a
|
|
|
3932 register. >
|
|
282
|
3933 :let var_a = getreg('a', 1)
|
|
7
|
3934 :let var_amode = getregtype('a')
|
|
|
3935 ....
|
|
|
3936 :call setreg('a', var_a, var_amode)
|
|
|
3937
|
|
|
3938 < You can also change the type of a register by appending
|
|
|
3939 nothing: >
|
|
|
3940 :call setreg('a', '', 'al')
|
|
|
3941
|
|
|
3942 setwinvar({nr}, {varname}, {val}) *setwinvar()*
|
|
|
3943 Set option or local variable {varname} in window {nr} to
|
|
323
|
3944 {val}. When {nr} is zero the current window is used.
|
|
7
|
3945 This also works for a global or local buffer option, but it
|
|
|
3946 doesn't work for a global or local buffer variable.
|
|
|
3947 For a local buffer option the global value is unchanged.
|
|
|
3948 Note that the variable name without "w:" must be used.
|
|
|
3949 Examples: >
|
|
|
3950 :call setwinvar(1, "&list", 0)
|
|
|
3951 :call setwinvar(2, "myvar", "foobar")
|
|
|
3952 < This function is not available in the |sandbox|.
|
|
|
3953
|
|
|
3954 simplify({filename}) *simplify()*
|
|
|
3955 Simplify the file name as much as possible without changing
|
|
|
3956 the meaning. Shortcuts (on MS-Windows) or symbolic links (on
|
|
|
3957 Unix) are not resolved. If the first path component in
|
|
|
3958 {filename} designates the current directory, this will be
|
|
|
3959 valid for the result as well. A trailing path separator is
|
|
|
3960 not removed either.
|
|
|
3961 Example: >
|
|
|
3962 simplify("./dir/.././/file/") == "./file/"
|
|
|
3963 < Note: The combination "dir/.." is only removed if "dir" is
|
|
|
3964 a searchable directory or does not exist. On Unix, it is also
|
|
|
3965 removed when "dir" is a symbolic link within the same
|
|
|
3966 directory. In order to resolve all the involved symbolic
|
|
|
3967 links before simplifying the path name, use |resolve()|.
|
|
|
3968
|
|
82
|
3969
|
|
85
|
3970 sort({list} [, {func}]) *sort()* *E702*
|
|
82
|
3971 Sort the items in {list} in-place. Returns {list}. If you
|
|
|
3972 want a list to remain unmodified make a copy first: >
|
|
|
3973 :let sortedlist = sort(copy(mylist))
|
|
|
3974 < Uses the string representation of each item to sort on.
|
|
95
|
3975 Numbers sort after Strings, Lists after Numbers.
|
|
282
|
3976 For sorting text in the current buffer use |:sort|.
|
|
82
|
3977 When {func} is given and it is one then case is ignored.
|
|
|
3978 When {func} is a Funcref or a function name, this function is
|
|
|
3979 called to compare items. The function is invoked with two
|
|
|
3980 items as argument and must return zero if they are equal, 1 if
|
|
|
3981 the first one sorts after the second one, -1 if the first one
|
|
|
3982 sorts before the second one. Example: >
|
|
|
3983 func MyCompare(i1, i2)
|
|
|
3984 return a:i1 == a:i2 ? 0 : a:i1 > a:i2 ? 1 : -1
|
|
|
3985 endfunc
|
|
|
3986 let sortedlist = sort(mylist, "MyCompare")
|
|
344
|
3987 <
|
|
|
3988
|
|
374
|
3989 *soundfold()*
|
|
|
3990 soundfold({word})
|
|
|
3991 Return the sound-folded equivalent of {word}. Uses the first
|
|
|
3992 language in 'spellang' for the current window that supports
|
|
375
|
3993 soundfolding. 'spell' must be set. When no sound folding is
|
|
|
3994 possible the {word} is returned unmodified.
|
|
374
|
3995 This can be used for making spelling suggestions. Note that
|
|
|
3996 the method can be quite slow.
|
|
|
3997
|
|
344
|
3998 *spellbadword()*
|
|
|
3999 spellbadword() Return the badly spelled word under or after the cursor.
|
|
477
|
4000 The cursor is moved to the start of the bad word.
|
|
344
|
4001 When no bad word is found in the cursor line an empty String
|
|
|
4002 is returned and the cursor doesn't move.
|
|
|
4003
|
|
|
4004 *spellsuggest()*
|
|
|
4005 spellsuggest({word} [, {max}])
|
|
|
4006 Return a List with spelling suggestions to replace {word}.
|
|
|
4007 When {max} is given up to this number of suggestions are
|
|
|
4008 returned. Otherwise up to 25 suggestions are returned.
|
|
|
4009
|
|
|
4010 {word} can be a badly spelled word followed by other text.
|
|
|
4011 This allows for joining two words that were split. The
|
|
359
|
4012 suggestions also include the following text, thus you can
|
|
|
4013 replace a line.
|
|
|
4014
|
|
|
4015 {word} may also be a good word. Similar words will then be
|
|
|
4016 returned. {word} itself is also included, most likely as the
|
|
|
4017 first entry, thus this can be used to check spelling.
|
|
344
|
4018
|
|
|
4019 The spelling information for the current window is used. The
|
|
375
|
4020 'spell' option must be set and the values of 'spelllang' and
|
|
|
4021 'spellsuggest' are used.
|
|
344
|
4022
|
|
82
|
4023
|
|
282
|
4024 split({expr} [, {pattern} [, {keepempty}]]) *split()*
|
|
|
4025 Make a List out of {expr}. When {pattern} is omitted or empty
|
|
|
4026 each white-separated sequence of characters becomes an item.
|
|
82
|
4027 Otherwise the string is split where {pattern} matches,
|
|
282
|
4028 removing the matched characters.
|
|
|
4029 When the first or last item is empty it is omitted, unless the
|
|
|
4030 {keepempty} argument is given and it's non-zero.
|
|
293
|
4031 Other empty items are kept when {pattern} matches at least one
|
|
|
4032 character or when {keepempty} is non-zero.
|
|
82
|
4033 Example: >
|
|
95
|
4034 :let words = split(getline('.'), '\W\+')
|
|
282
|
4035 < To split a string in individual characters: >
|
|
236
|
4036 :for c in split(mystring, '\zs')
|
|
258
|
4037 < If you want to keep the separator you can also use '\zs': >
|
|
|
4038 :echo split('abc:def:ghi', ':\zs')
|
|
|
4039 < ['abc:', 'def:', 'ghi'] ~
|
|
282
|
4040 Splitting a table where the first element can be empty: >
|
|
|
4041 :let items = split(line, ':', 1)
|
|
|
4042 < The opposite function is |join()|.
|
|
82
|
4043
|
|
|
4044
|
|
7
|
4045 strftime({format} [, {time}]) *strftime()*
|
|
|
4046 The result is a String, which is a formatted date and time, as
|
|
|
4047 specified by the {format} string. The given {time} is used,
|
|
|
4048 or the current time if no time is given. The accepted
|
|
|
4049 {format} depends on your system, thus this is not portable!
|
|
|
4050 See the manual page of the C function strftime() for the
|
|
|
4051 format. The maximum length of the result is 80 characters.
|
|
|
4052 See also |localtime()| and |getftime()|.
|
|
|
4053 The language can be changed with the |:language| command.
|
|
|
4054 Examples: >
|
|
|
4055 :echo strftime("%c") Sun Apr 27 11:49:23 1997
|
|
|
4056 :echo strftime("%Y %b %d %X") 1997 Apr 27 11:53:25
|
|
|
4057 :echo strftime("%y%m%d %T") 970427 11:53:55
|
|
|
4058 :echo strftime("%H:%M") 11:55
|
|
|
4059 :echo strftime("%c", getftime("file.c"))
|
|
|
4060 Show mod time of file.c.
|
|
82
|
4061 < Not available on all systems. To check use: >
|
|
|
4062 :if exists("*strftime")
|
|
|
4063
|
|
133
|
4064 stridx({haystack}, {needle} [, {start}]) *stridx()*
|
|
|
4065 The result is a Number, which gives the byte index in
|
|
|
4066 {haystack} of the first occurrence of the String {needle}.
|
|
140
|
4067 If {start} is specified, the search starts at index {start}.
|
|
|
4068 This can be used to find a second match: >
|
|
|
4069 :let comma1 = stridx(line, ",")
|
|
|
4070 :let comma2 = stridx(line, ",", comma1 + 1)
|
|
|
4071 < The search is done case-sensitive.
|
|
205
|
4072 For pattern searches use |match()|.
|
|
133
|
4073 -1 is returned if the {needle} does not occur in {haystack}.
|
|
140
|
4074 See also |strridx()|.
|
|
|
4075 Examples: >
|
|
7
|
4076 :echo stridx("An Example", "Example") 3
|
|
|
4077 :echo stridx("Starting point", "Start") 0
|
|
|
4078 :echo stridx("Starting point", "start") -1
|
|
170
|
4079 < *strstr()* *strchr()*
|
|
|
4080 stridx() works similar to the C function strstr(). When used
|
|
|
4081 with a single character it works similar to strchr().
|
|
|
4082
|
|
55
|
4083 *string()*
|
|
95
|
4084 string({expr}) Return {expr} converted to a String. If {expr} is a Number,
|
|
|
4085 String or a composition of them, then the result can be parsed
|
|
|
4086 back with |eval()|.
|
|
55
|
4087 {expr} type result ~
|
|
99
|
4088 String 'string'
|
|
95
|
4089 Number 123
|
|
99
|
4090 Funcref function('name')
|
|
95
|
4091 List [item, item]
|
|
323
|
4092 Dictionary {key: value, key: value}
|
|
99
|
4093 Note that in String values the ' character is doubled.
|
|
55
|
4094
|
|
7
|
4095 *strlen()*
|
|
|
4096 strlen({expr}) The result is a Number, which is the length of the String
|
|
502
|
4097 {expr} in bytes.
|
|
|
4098 If you want to count the number of multi-byte characters (not
|
|
|
4099 counting composing characters) use something like this: >
|
|
7
|
4100
|
|
|
4101 :let len = strlen(substitute(str, ".", "x", "g"))
|
|
502
|
4102 <
|
|
55
|
4103 If the argument is a Number it is first converted to a String.
|
|
|
4104 For other types an error is given.
|
|
|
4105 Also see |len()|.
|
|
7
|
4106
|
|
|
4107 strpart({src}, {start}[, {len}]) *strpart()*
|
|
|
4108 The result is a String, which is part of {src}, starting from
|
|
|
4109 byte {start}, with the length {len}.
|
|
|
4110 When non-existing bytes are included, this doesn't result in
|
|
|
4111 an error, the bytes are simply omitted.
|
|
|
4112 If {len} is missing, the copy continues from {start} till the
|
|
|
4113 end of the {src}. >
|
|
|
4114 strpart("abcdefg", 3, 2) == "de"
|
|
|
4115 strpart("abcdefg", -2, 4) == "ab"
|
|
|
4116 strpart("abcdefg", 5, 4) == "fg"
|
|
|
4117 strpart("abcdefg", 3) == "defg"
|
|
|
4118 < Note: To get the first character, {start} must be 0. For
|
|
|
4119 example, to get three bytes under and after the cursor: >
|
|
|
4120 strpart(getline(line(".")), col(".") - 1, 3)
|
|
|
4121 <
|
|
140
|
4122 strridx({haystack}, {needle} [, {start}]) *strridx()*
|
|
|
4123 The result is a Number, which gives the byte index in
|
|
|
4124 {haystack} of the last occurrence of the String {needle}.
|
|
|
4125 When {start} is specified, matches beyond this index are
|
|
|
4126 ignored. This can be used to find a match before a previous
|
|
|
4127 match: >
|
|
|
4128 :let lastcomma = strridx(line, ",")
|
|
|
4129 :let comma2 = strridx(line, ",", lastcomma - 1)
|
|
|
4130 < The search is done case-sensitive.
|
|
133
|
4131 For pattern searches use |match()|.
|
|
|
4132 -1 is returned if the {needle} does not occur in {haystack}.
|
|
22
|
4133 If the {needle} is empty the length of {haystack} is returned.
|
|
236
|
4134 See also |stridx()|. Examples: >
|
|
7
|
4135 :echo strridx("an angry armadillo", "an") 3
|
|
170
|
4136 < *strrchr()*
|
|
|
4137 When used with a single character it works similar to the C
|
|
|
4138 function strrchr().
|
|
|
4139
|
|
7
|
4140 strtrans({expr}) *strtrans()*
|
|
|
4141 The result is a String, which is {expr} with all unprintable
|
|
|
4142 characters translated into printable characters |'isprint'|.
|
|
|
4143 Like they are shown in a window. Example: >
|
|
|
4144 echo strtrans(@a)
|
|
|
4145 < This displays a newline in register a as "^@" instead of
|
|
|
4146 starting a new line.
|
|
|
4147
|
|
|
4148 submatch({nr}) *submatch()*
|
|
|
4149 Only for an expression in a |:substitute| command. Returns
|
|
|
4150 the {nr}'th submatch of the matched text. When {nr} is 0
|
|
|
4151 the whole matched text is returned.
|
|
|
4152 Example: >
|
|
|
4153 :s/\d\+/\=submatch(0) + 1/
|
|
|
4154 < This finds the first number in the line and adds one to it.
|
|
|
4155 A line break is included as a newline character.
|
|
|
4156
|
|
|
4157 substitute({expr}, {pat}, {sub}, {flags}) *substitute()*
|
|
|
4158 The result is a String, which is a copy of {expr}, in which
|
|
|
4159 the first match of {pat} is replaced with {sub}. This works
|
|
|
4160 like the ":substitute" command (without any flags). But the
|
|
|
4161 matching with {pat} is always done like the 'magic' option is
|
|
|
4162 set and 'cpoptions' is empty (to make scripts portable).
|
|
|
4163 See |string-match| for how {pat} is used.
|
|
|
4164 And a "~" in {sub} is not replaced with the previous {sub}.
|
|
|
4165 Note that some codes in {sub} have a special meaning
|
|
|
4166 |sub-replace-special|. For example, to replace something with
|
|
|
4167 "\n" (two characters), use "\\\\n" or '\\n'.
|
|
|
4168 When {pat} does not match in {expr}, {expr} is returned
|
|
|
4169 unmodified.
|
|
|
4170 When {flags} is "g", all matches of {pat} in {expr} are
|
|
|
4171 replaced. Otherwise {flags} should be "".
|
|
|
4172 Example: >
|
|
|
4173 :let &path = substitute(&path, ",\\=[^,]*$", "", "")
|
|
|
4174 < This removes the last component of the 'path' option. >
|
|
|
4175 :echo substitute("testing", ".*", "\\U\\0", "")
|
|
|
4176 < results in "TESTING".
|
|
|
4177
|
|
32
|
4178 synID({lnum}, {col}, {trans}) *synID()*
|
|
7
|
4179 The result is a Number, which is the syntax ID at the position
|
|
32
|
4180 {lnum} and {col} in the current window.
|
|
7
|
4181 The syntax ID can be used with |synIDattr()| and
|
|
|
4182 |synIDtrans()| to obtain syntax information about text.
|
|
419
|
4183
|
|
32
|
4184 {col} is 1 for the leftmost column, {lnum} is 1 for the first
|
|
419
|
4185 line. 'synmaxcol' applies, in a longer line zero is returned.
|
|
|
4186
|
|
7
|
4187 When {trans} is non-zero, transparent items are reduced to the
|
|
|
4188 item that they reveal. This is useful when wanting to know
|
|
|
4189 the effective color. When {trans} is zero, the transparent
|
|
|
4190 item is returned. This is useful when wanting to know which
|
|
|
4191 syntax item is effective (e.g. inside parens).
|
|
|
4192 Warning: This function can be very slow. Best speed is
|
|
|
4193 obtained by going through the file in forward direction.
|
|
|
4194
|
|
|
4195 Example (echoes the name of the syntax item under the cursor): >
|
|
|
4196 :echo synIDattr(synID(line("."), col("."), 1), "name")
|
|
|
4197 <
|
|
|
4198 synIDattr({synID}, {what} [, {mode}]) *synIDattr()*
|
|
|
4199 The result is a String, which is the {what} attribute of
|
|
|
4200 syntax ID {synID}. This can be used to obtain information
|
|
|
4201 about a syntax item.
|
|
|
4202 {mode} can be "gui", "cterm" or "term", to get the attributes
|
|
|
4203 for that mode. When {mode} is omitted, or an invalid value is
|
|
|
4204 used, the attributes for the currently active highlighting are
|
|
|
4205 used (GUI, cterm or term).
|
|
|
4206 Use synIDtrans() to follow linked highlight groups.
|
|
|
4207 {what} result
|
|
|
4208 "name" the name of the syntax item
|
|
|
4209 "fg" foreground color (GUI: color name used to set
|
|
|
4210 the color, cterm: color number as a string,
|
|
|
4211 term: empty string)
|
|
|
4212 "bg" background color (like "fg")
|
|
|
4213 "fg#" like "fg", but for the GUI and the GUI is
|
|
|
4214 running the name in "#RRGGBB" form
|
|
|
4215 "bg#" like "fg#" for "bg"
|
|
|
4216 "bold" "1" if bold
|
|
|
4217 "italic" "1" if italic
|
|
|
4218 "reverse" "1" if reverse
|
|
|
4219 "inverse" "1" if inverse (= reverse)
|
|
|
4220 "underline" "1" if underlined
|
|
205
|
4221 "undercurl" "1" if undercurled
|
|
7
|
4222
|
|
|
4223 Example (echoes the color of the syntax item under the
|
|
|
4224 cursor): >
|
|
|
4225 :echo synIDattr(synIDtrans(synID(line("."), col("."), 1)), "fg")
|
|
|
4226 <
|
|
|
4227 synIDtrans({synID}) *synIDtrans()*
|
|
|
4228 The result is a Number, which is the translated syntax ID of
|
|
|
4229 {synID}. This is the syntax group ID of what is being used to
|
|
|
4230 highlight the character. Highlight links given with
|
|
|
4231 ":highlight link" are followed.
|
|
|
4232
|
|
24
|
4233 system({expr} [, {input}]) *system()* *E677*
|
|
|
4234 Get the output of the shell command {expr}.
|
|
|
4235 When {input} is given, this string is written to a file and
|
|
|
4236 passed as stdin to the command. The string is written as-is,
|
|
|
4237 you need to take care of using the correct line separators
|
|
170
|
4238 yourself. Pipes are not used.
|
|
24
|
4239 Note: newlines in {expr} may cause the command to fail. The
|
|
|
4240 characters in 'shellquote' and 'shellxquote' may also cause
|
|
|
4241 trouble.
|
|
7
|
4242 This is not to be used for interactive commands.
|
|
|
4243 The result is a String. Example: >
|
|
|
4244
|
|
|
4245 :let files = system("ls")
|
|
|
4246
|
|
|
4247 < To make the result more system-independent, the shell output
|
|
|
4248 is filtered to replace <CR> with <NL> for Macintosh, and
|
|
|
4249 <CR><NL> with <NL> for DOS-like systems.
|
|
|
4250 The command executed is constructed using several options:
|
|
|
4251 'shell' 'shellcmdflag' 'shellxquote' {expr} 'shellredir' {tmp} 'shellxquote'
|
|
|
4252 ({tmp} is an automatically generated file name).
|
|
|
4253 For Unix and OS/2 braces are put around {expr} to allow for
|
|
|
4254 concatenated commands.
|
|
|
4255
|
|
|
4256 The resulting error code can be found in |v:shell_error|.
|
|
|
4257 This function will fail in |restricted-mode|.
|
|
|
4258 Unlike ":!cmd" there is no automatic check for changed files.
|
|
|
4259 Use |:checktime| to force a check.
|
|
|
4260
|
|
205
|
4261
|
|
|
4262 taglist({expr}) *taglist()*
|
|
|
4263 Returns a list of tags matching the regular expression {expr}.
|
|
438
|
4264 Each list item is a dictionary with at least the following
|
|
|
4265 entries:
|
|
205
|
4266 name name of the tag.
|
|
|
4267 filename name of the file where the tag is
|
|
|
4268 defined.
|
|
|
4269 cmd Ex command used to locate the tag in
|
|
|
4270 the file.
|
|
236
|
4271 kind type of the tag. The value for this
|
|
205
|
4272 entry depends on the language specific
|
|
|
4273 kind values generated by the ctags
|
|
|
4274 tool.
|
|
|
4275 static a file specific tag. Refer to
|
|
|
4276 |static-tag| for more information.
|
|
216
|
4277 The "kind" entry is only available when using Exuberant ctags
|
|
|
4278 generated tags file. More entries may be present, depending
|
|
|
4279 on the content of the tags file: access, implementation,
|
|
|
4280 inherits and signature. Refer to the ctags documentation for
|
|
|
4281 information about these fields. For C code the fields
|
|
|
4282 "struct", "class" and "enum" may appear, they give the name of
|
|
|
4283 the entity the tag is contained in.
|
|
452
|
4284
|
|
216
|
4285 The ex-command 'cmd' can be either an ex search pattern, a
|
|
|
4286 line number or a line number followed by a byte number.
|
|
205
|
4287
|
|
|
4288 If there are no matching tags, then an empty list is returned.
|
|
|
4289
|
|
|
4290 To get an exact tag match, the anchors '^' and '$' should be
|
|
|
4291 used in {expr}. Refer to |tag-regexp| for more information
|
|
|
4292 about the tag search regular expression pattern.
|
|
|
4293
|
|
|
4294 Refer to |'tags'| for information about how the tags file is
|
|
|
4295 located by Vim. Refer to |tags-file-format| for the format of
|
|
|
4296 the tags file generated by the different ctags tools.
|
|
|
4297
|
|
|
4298
|
|
7
|
4299 tempname() *tempname()* *temp-file-name*
|
|
|
4300 The result is a String, which is the name of a file that
|
|
|
4301 doesn't exist. It can be used for a temporary file. The name
|
|
|
4302 is different for at least 26 consecutive calls. Example: >
|
|
|
4303 :let tmpfile = tempname()
|
|
|
4304 :exe "redir > " . tmpfile
|
|
|
4305 < For Unix, the file will be in a private directory (only
|
|
|
4306 accessible by the current user) to avoid security problems
|
|
|
4307 (e.g., a symlink attack or other people reading your file).
|
|
|
4308 When Vim exits the directory and all files in it are deleted.
|
|
|
4309 For MS-Windows forward slashes are used when the 'shellslash'
|
|
|
4310 option is set or when 'shellcmdflag' starts with '-'.
|
|
|
4311
|
|
|
4312 tolower({expr}) *tolower()*
|
|
|
4313 The result is a copy of the String given, with all uppercase
|
|
|
4314 characters turned into lowercase (just like applying |gu| to
|
|
|
4315 the string).
|
|
|
4316
|
|
|
4317 toupper({expr}) *toupper()*
|
|
|
4318 The result is a copy of the String given, with all lowercase
|
|
|
4319 characters turned into uppercase (just like applying |gU| to
|
|
|
4320 the string).
|
|
|
4321
|
|
15
|
4322 tr({src}, {fromstr}, {tostr}) *tr()*
|
|
|
4323 The result is a copy of the {src} string with all characters
|
|
|
4324 which appear in {fromstr} replaced by the character in that
|
|
|
4325 position in the {tostr} string. Thus the first character in
|
|
|
4326 {fromstr} is translated into the first character in {tostr}
|
|
|
4327 and so on. Exactly like the unix "tr" command.
|
|
|
4328 This code also deals with multibyte characters properly.
|
|
|
4329
|
|
|
4330 Examples: >
|
|
|
4331 echo tr("hello there", "ht", "HT")
|
|
|
4332 < returns "Hello THere" >
|
|
|
4333 echo tr("<blob>", "<>", "{}")
|
|
|
4334 < returns "{blob}"
|
|
|
4335
|
|
87
|
4336 *type()*
|
|
|
4337 type({expr}) The result is a Number, depending on the type of {expr}:
|
|
153
|
4338 Number: 0
|
|
|
4339 String: 1
|
|
|
4340 Funcref: 2
|
|
|
4341 List: 3
|
|
|
4342 Dictionary: 4
|
|
|
4343 To avoid the magic numbers it should be used this way: >
|
|
87
|
4344 :if type(myvar) == type(0)
|
|
|
4345 :if type(myvar) == type("")
|
|
|
4346 :if type(myvar) == type(function("tr"))
|
|
|
4347 :if type(myvar) == type([])
|
|
153
|
4348 :if type(myvar) == type({})
|
|
7
|
4349
|
|
140
|
4350 values({dict}) *values()*
|
|
|
4351 Return a List with all the values of {dict}. The List is in
|
|
|
4352 arbitrary order.
|
|
|
4353
|
|
|
4354
|
|
7
|
4355 virtcol({expr}) *virtcol()*
|
|
|
4356 The result is a Number, which is the screen column of the file
|
|
|
4357 position given with {expr}. That is, the last screen position
|
|
|
4358 occupied by the character at that position, when the screen
|
|
|
4359 would be of unlimited width. When there is a <Tab> at the
|
|
|
4360 position, the returned Number will be the column at the end of
|
|
|
4361 the <Tab>. For example, for a <Tab> in column 1, with 'ts'
|
|
|
4362 set to 8, it returns 8.
|
|
|
4363 For the byte position use |col()|.
|
|
|
4364 When Virtual editing is active in the current mode, a position
|
|
|
4365 beyond the end of the line can be returned. |'virtualedit'|
|
|
|
4366 The accepted positions are:
|
|
|
4367 . the cursor position
|
|
|
4368 $ the end of the cursor line (the result is the
|
|
|
4369 number of displayed characters in the cursor line
|
|
|
4370 plus one)
|
|
|
4371 'x position of mark x (if the mark is not set, 0 is
|
|
|
4372 returned)
|
|
|
4373 Note that only marks in the current file can be used.
|
|
|
4374 Examples: >
|
|
|
4375 virtcol(".") with text "foo^Lbar", with cursor on the "^L", returns 5
|
|
|
4376 virtcol("$") with text "foo^Lbar", returns 9
|
|
|
4377 virtcol("'t") with text " there", with 't at 'h', returns 6
|
|
|
4378 < The first column is 1. 0 is returned for an error.
|
|
|
4379
|
|
|
4380 visualmode([expr]) *visualmode()*
|
|
|
4381 The result is a String, which describes the last Visual mode
|
|
|
4382 used. Initially it returns an empty string, but once Visual
|
|
|
4383 mode has been used, it returns "v", "V", or "<CTRL-V>" (a
|
|
|
4384 single CTRL-V character) for character-wise, line-wise, or
|
|
|
4385 block-wise Visual mode respectively.
|
|
|
4386 Example: >
|
|
|
4387 :exe "normal " . visualmode()
|
|
|
4388 < This enters the same Visual mode as before. It is also useful
|
|
|
4389 in scripts if you wish to act differently depending on the
|
|
|
4390 Visual mode that was used.
|
|
|
4391
|
|
|
4392 If an expression is supplied that results in a non-zero number
|
|
|
4393 or a non-empty string, then the Visual mode will be cleared
|
|
|
4394 and the old value is returned. Note that " " and "0" are also
|
|
|
4395 non-empty strings, thus cause the mode to be cleared.
|
|
|
4396
|
|
|
4397 *winbufnr()*
|
|
|
4398 winbufnr({nr}) The result is a Number, which is the number of the buffer
|
|
236
|
4399 associated with window {nr}. When {nr} is zero, the number of
|
|
7
|
4400 the buffer in the current window is returned. When window
|
|
|
4401 {nr} doesn't exist, -1 is returned.
|
|
|
4402 Example: >
|
|
|
4403 :echo "The file in the current window is " . bufname(winbufnr(0))
|
|
|
4404 <
|
|
|
4405 *wincol()*
|
|
|
4406 wincol() The result is a Number, which is the virtual column of the
|
|
|
4407 cursor in the window. This is counting screen cells from the
|
|
|
4408 left side of the window. The leftmost column is one.
|
|
|
4409
|
|
|
4410 winheight({nr}) *winheight()*
|
|
|
4411 The result is a Number, which is the height of window {nr}.
|
|
|
4412 When {nr} is zero, the height of the current window is
|
|
|
4413 returned. When window {nr} doesn't exist, -1 is returned.
|
|
|
4414 An existing window always has a height of zero or more.
|
|
|
4415 Examples: >
|
|
|
4416 :echo "The current window has " . winheight(0) . " lines."
|
|
|
4417 <
|
|
|
4418 *winline()*
|
|
|
4419 winline() The result is a Number, which is the screen line of the cursor
|
|
|
4420 in the window. This is counting screen lines from the top of
|
|
|
4421 the window. The first line is one.
|
|
|
4422
|
|
|
4423 *winnr()*
|
|
20
|
4424 winnr([{arg}]) The result is a Number, which is the number of the current
|
|
|
4425 window. The top window has number 1.
|
|
|
4426 When the optional argument is "$", the number of the
|
|
|
4427 last window is returnd (the window count).
|
|
|
4428 When the optional argument is "#", the number of the last
|
|
|
4429 accessed window is returned (where |CTRL-W_p| goes to).
|
|
|
4430 If there is no previous window 0 is returned.
|
|
|
4431 The number can be used with |CTRL-W_w| and ":wincmd w"
|
|
|
4432 |:wincmd|.
|
|
7
|
4433
|
|
|
4434 *winrestcmd()*
|
|
|
4435 winrestcmd() Returns a sequence of |:resize| commands that should restore
|
|
|
4436 the current window sizes. Only works properly when no windows
|
|
|
4437 are opened or closed and the current window is unchanged.
|
|
|
4438 Example: >
|
|
|
4439 :let cmd = winrestcmd()
|
|
|
4440 :call MessWithWindowSizes()
|
|
|
4441 :exe cmd
|
|
|
4442
|
|
|
4443 winwidth({nr}) *winwidth()*
|
|
|
4444 The result is a Number, which is the width of window {nr}.
|
|
|
4445 When {nr} is zero, the width of the current window is
|
|
|
4446 returned. When window {nr} doesn't exist, -1 is returned.
|
|
|
4447 An existing window always has a width of zero or more.
|
|
|
4448 Examples: >
|
|
|
4449 :echo "The current window has " . winwidth(0) . " columns."
|
|
|
4450 :if winwidth(0) <= 50
|
|
|
4451 : exe "normal 50\<C-W>|"
|
|
|
4452 :endif
|
|
|
4453 <
|
|
158
|
4454 *writefile()*
|
|
|
4455 writefile({list}, {fname} [, {binary}])
|
|
|
4456 Write List {list} to file {fname}. Each list item is
|
|
|
4457 separated with a NL. Each list item must be a String or
|
|
|
4458 Number.
|
|
|
4459 When {binary} is equal to "b" binary mode is used: There will
|
|
|
4460 not be a NL after the last list item. An empty item at the
|
|
|
4461 end does cause the last line in the file to end in a NL.
|
|
|
4462 All NL characters are replaced with a NUL character.
|
|
|
4463 Inserting CR characters needs to be done before passing {list}
|
|
|
4464 to writefile().
|
|
|
4465 An existing file is overwritten, if possible.
|
|
|
4466 When the write fails -1 is returned, otherwise 0. There is an
|
|
|
4467 error message if the file can't be created or when writing
|
|
|
4468 fails.
|
|
|
4469 Also see |readfile()|.
|
|
|
4470 To copy a file byte for byte: >
|
|
|
4471 :let fl = readfile("foo", "b")
|
|
|
4472 :call writefile(fl, "foocopy", "b")
|
|
|
4473 <
|
|
7
|
4474
|
|
|
4475 *feature-list*
|
|
|
4476 There are three types of features:
|
|
|
4477 1. Features that are only supported when they have been enabled when Vim
|
|
|
4478 was compiled |+feature-list|. Example: >
|
|
|
4479 :if has("cindent")
|
|
|
4480 2. Features that are only supported when certain conditions have been met.
|
|
|
4481 Example: >
|
|
|
4482 :if has("gui_running")
|
|
|
4483 < *has-patch*
|
|
|
4484 3. Included patches. First check |v:version| for the version of Vim.
|
|
|
4485 Then the "patch123" feature means that patch 123 has been included for
|
|
|
4486 this version. Example (checking version 6.2.148 or later): >
|
|
|
4487 :if v:version > 602 || v:version == 602 && has("patch148")
|
|
|
4488
|
|
|
4489 all_builtin_terms Compiled with all builtin terminals enabled.
|
|
|
4490 amiga Amiga version of Vim.
|
|
|
4491 arabic Compiled with Arabic support |Arabic|.
|
|
|
4492 arp Compiled with ARP support (Amiga).
|
|
|
4493 autocmd Compiled with autocommands support.
|
|
|
4494 balloon_eval Compiled with |balloon-eval| support.
|
|
435
|
4495 balloon_multiline GUI supports multiline balloons.
|
|
7
|
4496 beos BeOS version of Vim.
|
|
|
4497 browse Compiled with |:browse| support, and browse() will
|
|
|
4498 work.
|
|
|
4499 builtin_terms Compiled with some builtin terminals.
|
|
|
4500 byte_offset Compiled with support for 'o' in 'statusline'
|
|
|
4501 cindent Compiled with 'cindent' support.
|
|
|
4502 clientserver Compiled with remote invocation support |clientserver|.
|
|
|
4503 clipboard Compiled with 'clipboard' support.
|
|
|
4504 cmdline_compl Compiled with |cmdline-completion| support.
|
|
|
4505 cmdline_hist Compiled with |cmdline-history| support.
|
|
|
4506 cmdline_info Compiled with 'showcmd' and 'ruler' support.
|
|
|
4507 comments Compiled with |'comments'| support.
|
|
|
4508 cryptv Compiled with encryption support |encryption|.
|
|
|
4509 cscope Compiled with |cscope| support.
|
|
|
4510 compatible Compiled to be very Vi compatible.
|
|
|
4511 debug Compiled with "DEBUG" defined.
|
|
|
4512 dialog_con Compiled with console dialog support.
|
|
|
4513 dialog_gui Compiled with GUI dialog support.
|
|
|
4514 diff Compiled with |vimdiff| and 'diff' support.
|
|
|
4515 digraphs Compiled with support for digraphs.
|
|
|
4516 dnd Compiled with support for the "~ register |quote_~|.
|
|
|
4517 dos32 32 bits DOS (DJGPP) version of Vim.
|
|
|
4518 dos16 16 bits DOS version of Vim.
|
|
|
4519 ebcdic Compiled on a machine with ebcdic character set.
|
|
|
4520 emacs_tags Compiled with support for Emacs tags.
|
|
|
4521 eval Compiled with expression evaluation support. Always
|
|
|
4522 true, of course!
|
|
|
4523 ex_extra Compiled with extra Ex commands |+ex_extra|.
|
|
|
4524 extra_search Compiled with support for |'incsearch'| and
|
|
|
4525 |'hlsearch'|
|
|
|
4526 farsi Compiled with Farsi support |farsi|.
|
|
|
4527 file_in_path Compiled with support for |gf| and |<cfile>|
|
|
168
|
4528 filterpipe When 'shelltemp' is off pipes are used for shell
|
|
|
4529 read/write/filter commands
|
|
7
|
4530 find_in_path Compiled with support for include file searches
|
|
|
4531 |+find_in_path|.
|
|
|
4532 fname_case Case in file names matters (for Amiga, MS-DOS, and
|
|
|
4533 Windows this is not present).
|
|
|
4534 folding Compiled with |folding| support.
|
|
|
4535 footer Compiled with GUI footer support. |gui-footer|
|
|
|
4536 fork Compiled to use fork()/exec() instead of system().
|
|
|
4537 gettext Compiled with message translation |multi-lang|
|
|
|
4538 gui Compiled with GUI enabled.
|
|
|
4539 gui_athena Compiled with Athena GUI.
|
|
|
4540 gui_gtk Compiled with GTK+ GUI (any version).
|
|
|
4541 gui_gtk2 Compiled with GTK+ 2 GUI (gui_gtk is also defined).
|
|
11
|
4542 gui_kde Compiled with KDE GUI |KVim|
|
|
7
|
4543 gui_mac Compiled with Macintosh GUI.
|
|
|
4544 gui_motif Compiled with Motif GUI.
|
|
|
4545 gui_photon Compiled with Photon GUI.
|
|
|
4546 gui_win32 Compiled with MS Windows Win32 GUI.
|
|
|
4547 gui_win32s idem, and Win32s system being used (Windows 3.1)
|
|
|
4548 gui_running Vim is running in the GUI, or it will start soon.
|
|
|
4549 hangul_input Compiled with Hangul input support. |hangul|
|
|
|
4550 iconv Can use iconv() for conversion.
|
|
|
4551 insert_expand Compiled with support for CTRL-X expansion commands in
|
|
|
4552 Insert mode.
|
|
|
4553 jumplist Compiled with |jumplist| support.
|
|
|
4554 keymap Compiled with 'keymap' support.
|
|
|
4555 langmap Compiled with 'langmap' support.
|
|
|
4556 libcall Compiled with |libcall()| support.
|
|
|
4557 linebreak Compiled with 'linebreak', 'breakat' and 'showbreak'
|
|
|
4558 support.
|
|
|
4559 lispindent Compiled with support for lisp indenting.
|
|
|
4560 listcmds Compiled with commands for the buffer list |:files|
|
|
|
4561 and the argument list |arglist|.
|
|
|
4562 localmap Compiled with local mappings and abbr. |:map-local|
|
|
|
4563 mac Macintosh version of Vim.
|
|
|
4564 macunix Macintosh version of Vim, using Unix files (OS-X).
|
|
|
4565 menu Compiled with support for |:menu|.
|
|
|
4566 mksession Compiled with support for |:mksession|.
|
|
|
4567 modify_fname Compiled with file name modifiers. |filename-modifiers|
|
|
|
4568 mouse Compiled with support mouse.
|
|
|
4569 mouseshape Compiled with support for 'mouseshape'.
|
|
|
4570 mouse_dec Compiled with support for Dec terminal mouse.
|
|
|
4571 mouse_gpm Compiled with support for gpm (Linux console mouse)
|
|
|
4572 mouse_netterm Compiled with support for netterm mouse.
|
|
|
4573 mouse_pterm Compiled with support for qnx pterm mouse.
|
|
|
4574 mouse_xterm Compiled with support for xterm mouse.
|
|
|
4575 multi_byte Compiled with support for editing Korean et al.
|
|
|
4576 multi_byte_ime Compiled with support for IME input method.
|
|
|
4577 multi_lang Compiled with support for multiple languages.
|
|
14
|
4578 mzscheme Compiled with MzScheme interface |mzscheme|.
|
|
7
|
4579 netbeans_intg Compiled with support for |netbeans|.
|
|
33
|
4580 netbeans_enabled Compiled with support for |netbeans| and it's used.
|
|
7
|
4581 ole Compiled with OLE automation support for Win32.
|
|
|
4582 os2 OS/2 version of Vim.
|
|
|
4583 osfiletype Compiled with support for osfiletypes |+osfiletype|
|
|
|
4584 path_extra Compiled with up/downwards search in 'path' and 'tags'
|
|
|
4585 perl Compiled with Perl interface.
|
|
|
4586 postscript Compiled with PostScript file printing.
|
|
|
4587 printer Compiled with |:hardcopy| support.
|
|
170
|
4588 profile Compiled with |:profile| support.
|
|
7
|
4589 python Compiled with Python interface.
|
|
|
4590 qnx QNX version of Vim.
|
|
|
4591 quickfix Compiled with |quickfix| support.
|
|
|
4592 rightleft Compiled with 'rightleft' support.
|
|
|
4593 ruby Compiled with Ruby interface |ruby|.
|
|
|
4594 scrollbind Compiled with 'scrollbind' support.
|
|
|
4595 showcmd Compiled with 'showcmd' support.
|
|
|
4596 signs Compiled with |:sign| support.
|
|
|
4597 smartindent Compiled with 'smartindent' support.
|
|
9
|
4598 sniff Compiled with SNiFF interface support.
|
|
7
|
4599 statusline Compiled with support for 'statusline', 'rulerformat'
|
|
|
4600 and special formats of 'titlestring' and 'iconstring'.
|
|
|
4601 sun_workshop Compiled with support for Sun |workshop|.
|
|
314
|
4602 spell Compiled with spell checking support |spell|.
|
|
|
4603 syntax Compiled with syntax highlighting support |syntax|.
|
|
7
|
4604 syntax_items There are active syntax highlighting items for the
|
|
|
4605 current buffer.
|
|
|
4606 system Compiled to use system() instead of fork()/exec().
|
|
|
4607 tag_binary Compiled with binary searching in tags files
|
|
|
4608 |tag-binary-search|.
|
|
|
4609 tag_old_static Compiled with support for old static tags
|
|
|
4610 |tag-old-static|.
|
|
|
4611 tag_any_white Compiled with support for any white characters in tags
|
|
|
4612 files |tag-any-white|.
|
|
|
4613 tcl Compiled with Tcl interface.
|
|
|
4614 terminfo Compiled with terminfo instead of termcap.
|
|
|
4615 termresponse Compiled with support for |t_RV| and |v:termresponse|.
|
|
|
4616 textobjects Compiled with support for |text-objects|.
|
|
|
4617 tgetent Compiled with tgetent support, able to use a termcap
|
|
|
4618 or terminfo file.
|
|
|
4619 title Compiled with window title support |'title'|.
|
|
|
4620 toolbar Compiled with support for |gui-toolbar|.
|
|
|
4621 unix Unix version of Vim.
|
|
|
4622 user_commands User-defined commands.
|
|
|
4623 viminfo Compiled with viminfo support.
|
|
|
4624 vim_starting True while initial source'ing takes place.
|
|
|
4625 vertsplit Compiled with vertically split windows |:vsplit|.
|
|
|
4626 virtualedit Compiled with 'virtualedit' option.
|
|
|
4627 visual Compiled with Visual mode.
|
|
|
4628 visualextra Compiled with extra Visual mode commands.
|
|
|
4629 |blockwise-operators|.
|
|
|
4630 vms VMS version of Vim.
|
|
|
4631 vreplace Compiled with |gR| and |gr| commands.
|
|
|
4632 wildignore Compiled with 'wildignore' option.
|
|
|
4633 wildmenu Compiled with 'wildmenu' option.
|
|
|
4634 windows Compiled with support for more than one window.
|
|
|
4635 winaltkeys Compiled with 'winaltkeys' option.
|
|
|
4636 win16 Win16 version of Vim (MS-Windows 3.1).
|
|
|
4637 win32 Win32 version of Vim (MS-Windows 95/98/ME/NT/2000/XP).
|
|
|
4638 win64 Win64 version of Vim (MS-Windows 64 bit).
|
|
|
4639 win32unix Win32 version of Vim, using Unix files (Cygwin)
|
|
|
4640 win95 Win32 version for MS-Windows 95/98/ME.
|
|
|
4641 writebackup Compiled with 'writebackup' default on.
|
|
|
4642 xfontset Compiled with X fontset support |xfontset|.
|
|
|
4643 xim Compiled with X input method support |xim|.
|
|
|
4644 xsmp Compiled with X session management support.
|
|
|
4645 xsmp_interact Compiled with interactive X session management support.
|
|
|
4646 xterm_clipboard Compiled with support for xterm clipboard.
|
|
|
4647 xterm_save Compiled with support for saving and restoring the
|
|
|
4648 xterm screen.
|
|
|
4649 x11 Compiled with X11 support.
|
|
|
4650
|
|
|
4651 *string-match*
|
|
|
4652 Matching a pattern in a String
|
|
|
4653
|
|
|
4654 A regexp pattern as explained at |pattern| is normally used to find a match in
|
|
|
4655 the buffer lines. When a pattern is used to find a match in a String, almost
|
|
|
4656 everything works in the same way. The difference is that a String is handled
|
|
|
4657 like it is one line. When it contains a "\n" character, this is not seen as a
|
|
|
4658 line break for the pattern. It can be matched with a "\n" in the pattern, or
|
|
|
4659 with ".". Example: >
|
|
|
4660 :let a = "aaaa\nxxxx"
|
|
|
4661 :echo matchstr(a, "..\n..")
|
|
|
4662 aa
|
|
|
4663 xx
|
|
|
4664 :echo matchstr(a, "a.x")
|
|
|
4665 a
|
|
|
4666 x
|
|
|
4667
|
|
|
4668 Don't forget that "^" will only match at the first character of the String and
|
|
|
4669 "$" at the last character of the string. They don't match after or before a
|
|
|
4670 "\n".
|
|
|
4671
|
|
|
4672 ==============================================================================
|
|
|
4673 5. Defining functions *user-functions*
|
|
|
4674
|
|
|
4675 New functions can be defined. These can be called just like builtin
|
|
|
4676 functions. The function executes a sequence of Ex commands. Normal mode
|
|
|
4677 commands can be executed with the |:normal| command.
|
|
|
4678
|
|
|
4679 The function name must start with an uppercase letter, to avoid confusion with
|
|
|
4680 builtin functions. To prevent from using the same name in different scripts
|
|
|
4681 avoid obvious, short names. A good habit is to start the function name with
|
|
|
4682 the name of the script, e.g., "HTMLcolor()".
|
|
|
4683
|
|
504
|
4684 It's also possible to use curly braces, see |curly-braces-names|. And the
|
|
|
4685 |autoload| facility is useful to define a function only when it's called.
|
|
7
|
4686
|
|
|
4687 *local-function*
|
|
|
4688 A function local to a script must start with "s:". A local script function
|
|
|
4689 can only be called from within the script and from functions, user commands
|
|
|
4690 and autocommands defined in the script. It is also possible to call the
|
|
|
4691 function from a mappings defined in the script, but then |<SID>| must be used
|
|
|
4692 instead of "s:" when the mapping is expanded outside of the script.
|
|
|
4693
|
|
|
4694 *:fu* *:function* *E128* *E129* *E123*
|
|
|
4695 :fu[nction] List all functions and their arguments.
|
|
|
4696
|
|
|
4697 :fu[nction] {name} List function {name}.
|
|
114
|
4698 {name} can also be a Dictionary entry that is a
|
|
|
4699 Funcref: >
|
|
|
4700 :function dict.init
|
|
504
|
4701
|
|
|
4702 :fu[nction] /{pattern} List functions with a name matching {pattern}.
|
|
|
4703 Example that lists all functions ending with "File": >
|
|
|
4704 :function /File$
|
|
482
|
4705 <
|
|
|
4706 *:function-verbose*
|
|
|
4707 When 'verbose' is non-zero, listing a function will also display where it was
|
|
|
4708 last defined. Example: >
|
|
|
4709
|
|
|
4710 :verbose function SetFileTypeSH
|
|
|
4711 function SetFileTypeSH(name)
|
|
|
4712 Last set from /usr/share/vim/vim-7.0/filetype.vim
|
|
|
4713 <
|
|
484
|
4714 See |:verbose-cmd| for more information.
|
|
482
|
4715
|
|
|
4716 *E124* *E125*
|
|
102
|
4717 :fu[nction][!] {name}([arguments]) [range] [abort] [dict]
|
|
7
|
4718 Define a new function by the name {name}. The name
|
|
|
4719 must be made of alphanumeric characters and '_', and
|
|
|
4720 must start with a capital or "s:" (see above).
|
|
114
|
4721
|
|
|
4722 {name} can also be a Dictionary entry that is a
|
|
|
4723 Funcref: >
|
|
|
4724 :function dict.init(arg)
|
|
|
4725 < "dict" must be an existing dictionary. The entry
|
|
|
4726 "init" is added if it didn't exist yet. Otherwise [!]
|
|
|
4727 is required to overwrite an existing function. The
|
|
|
4728 result is a |Funcref| to a numbered function. The
|
|
|
4729 function can only be used with a |Funcref| and will be
|
|
|
4730 deleted if there are no more references to it.
|
|
7
|
4731 *E127* *E122*
|
|
|
4732 When a function by this name already exists and [!] is
|
|
|
4733 not used an error message is given. When [!] is used,
|
|
|
4734 an existing function is silently replaced. Unless it
|
|
|
4735 is currently being executed, that is an error.
|
|
133
|
4736
|
|
|
4737 For the {arguments} see |function-argument|.
|
|
|
4738
|
|
7
|
4739 *a:firstline* *a:lastline*
|
|
|
4740 When the [range] argument is added, the function is
|
|
|
4741 expected to take care of a range itself. The range is
|
|
|
4742 passed as "a:firstline" and "a:lastline". If [range]
|
|
|
4743 is excluded, ":{range}call" will call the function for
|
|
|
4744 each line in the range, with the cursor on the start
|
|
|
4745 of each line. See |function-range-example|.
|
|
114
|
4746
|
|
7
|
4747 When the [abort] argument is added, the function will
|
|
|
4748 abort as soon as an error is detected.
|
|
|
4749 The last used search pattern and the redo command "."
|
|
|
4750 will not be changed by the function.
|
|
114
|
4751
|
|
102
|
4752 When the [dict] argument is added, the function must
|
|
|
4753 be invoked through an entry in a Dictionary. The
|
|
|
4754 local variable "self" will then be set to the
|
|
|
4755 dictionary. See |Dictionary-function|.
|
|
7
|
4756
|
|
|
4757 *:endf* *:endfunction* *E126* *E193*
|
|
|
4758 :endf[unction] The end of a function definition. Must be on a line
|
|
|
4759 by its own, without other commands.
|
|
|
4760
|
|
|
4761 *:delf* *:delfunction* *E130* *E131*
|
|
|
4762 :delf[unction] {name} Delete function {name}.
|
|
114
|
4763 {name} can also be a Dictionary entry that is a
|
|
|
4764 Funcref: >
|
|
|
4765 :delfunc dict.init
|
|
|
4766 < This will remove the "init" entry from "dict". The
|
|
|
4767 function is deleted if there are no more references to
|
|
|
4768 it.
|
|
7
|
4769 *:retu* *:return* *E133*
|
|
|
4770 :retu[rn] [expr] Return from a function. When "[expr]" is given, it is
|
|
|
4771 evaluated and returned as the result of the function.
|
|
|
4772 If "[expr]" is not given, the number 0 is returned.
|
|
|
4773 When a function ends without an explicit ":return",
|
|
|
4774 the number 0 is returned.
|
|
|
4775 Note that there is no check for unreachable lines,
|
|
|
4776 thus there is no warning if commands follow ":return".
|
|
|
4777
|
|
|
4778 If the ":return" is used after a |:try| but before the
|
|
|
4779 matching |:finally| (if present), the commands
|
|
|
4780 following the ":finally" up to the matching |:endtry|
|
|
|
4781 are executed first. This process applies to all
|
|
|
4782 nested ":try"s inside the function. The function
|
|
|
4783 returns at the outermost ":endtry".
|
|
|
4784
|
|
133
|
4785 *function-argument* *a:var*
|
|
|
4786 An argument can be defined by giving its name. In the function this can then
|
|
|
4787 be used as "a:name" ("a:" for argument).
|
|
|
4788 *a:0* *a:1* *a:000* *E740*
|
|
|
4789 Up to 20 arguments can be given, separated by commas. After the named
|
|
|
4790 arguments an argument "..." can be specified, which means that more arguments
|
|
|
4791 may optionally be following. In the function the extra arguments can be used
|
|
|
4792 as "a:1", "a:2", etc. "a:0" is set to the number of extra arguments (which
|
|
148
|
4793 can be 0). "a:000" is set to a List that contains these arguments. Note that
|
|
|
4794 "a:1" is the same as "a:000[0]".
|
|
|
4795 *E742*
|
|
|
4796 The a: scope and the variables in it cannot be changed, they are fixed.
|
|
|
4797 However, if a List or Dictionary is used, you can changes their contents.
|
|
|
4798 Thus you can pass a List to a function and have the function add an item to
|
|
|
4799 it. If you want to make sure the function cannot change a List or Dictionary
|
|
|
4800 use |:lockvar|.
|
|
133
|
4801
|
|
|
4802 When not using "...", the number of arguments in a function call must be equal
|
|
|
4803 to the number of named arguments. When using "...", the number of arguments
|
|
|
4804 may be larger.
|
|
|
4805
|
|
|
4806 It is also possible to define a function without any arguments. You must
|
|
|
4807 still supply the () then. The body of the function follows in the next lines,
|
|
|
4808 until the matching |:endfunction|. It is allowed to define another function
|
|
|
4809 inside a function body.
|
|
|
4810
|
|
|
4811 *local-variables*
|
|
7
|
4812 Inside a function variables can be used. These are local variables, which
|
|
|
4813 will disappear when the function returns. Global variables need to be
|
|
|
4814 accessed with "g:".
|
|
|
4815
|
|
|
4816 Example: >
|
|
|
4817 :function Table(title, ...)
|
|
|
4818 : echohl Title
|
|
|
4819 : echo a:title
|
|
|
4820 : echohl None
|
|
140
|
4821 : echo a:0 . " items:"
|
|
|
4822 : for s in a:000
|
|
|
4823 : echon ' ' . s
|
|
|
4824 : endfor
|
|
7
|
4825 :endfunction
|
|
|
4826
|
|
|
4827 This function can then be called with: >
|
|
140
|
4828 call Table("Table", "line1", "line2")
|
|
|
4829 call Table("Empty Table")
|
|
7
|
4830
|
|
|
4831 To return more than one value, pass the name of a global variable: >
|
|
|
4832 :function Compute(n1, n2, divname)
|
|
|
4833 : if a:n2 == 0
|
|
|
4834 : return "fail"
|
|
|
4835 : endif
|
|
|
4836 : let g:{a:divname} = a:n1 / a:n2
|
|
|
4837 : return "ok"
|
|
|
4838 :endfunction
|
|
|
4839
|
|
|
4840 This function can then be called with: >
|
|
|
4841 :let success = Compute(13, 1324, "div")
|
|
|
4842 :if success == "ok"
|
|
|
4843 : echo div
|
|
|
4844 :endif
|
|
|
4845
|
|
|
4846 An alternative is to return a command that can be executed. This also works
|
|
|
4847 with local variables in a calling function. Example: >
|
|
|
4848 :function Foo()
|
|
|
4849 : execute Bar()
|
|
|
4850 : echo "line " . lnum . " column " . col
|
|
|
4851 :endfunction
|
|
|
4852
|
|
|
4853 :function Bar()
|
|
|
4854 : return "let lnum = " . line(".") . " | let col = " . col(".")
|
|
|
4855 :endfunction
|
|
|
4856
|
|
|
4857 The names "lnum" and "col" could also be passed as argument to Bar(), to allow
|
|
|
4858 the caller to set the names.
|
|
|
4859
|
|
|
4860 *:cal* *:call* *E107*
|
|
|
4861 :[range]cal[l] {name}([arguments])
|
|
|
4862 Call a function. The name of the function and its arguments
|
|
|
4863 are as specified with |:function|. Up to 20 arguments can be
|
|
|
4864 used.
|
|
|
4865 Without a range and for functions that accept a range, the
|
|
|
4866 function is called once. When a range is given the cursor is
|
|
|
4867 positioned at the start of the first line before executing the
|
|
|
4868 function.
|
|
|
4869 When a range is given and the function doesn't handle it
|
|
|
4870 itself, the function is executed for each line in the range,
|
|
|
4871 with the cursor in the first column of that line. The cursor
|
|
|
4872 is left at the last line (possibly moved by the last function
|
|
|
4873 call). The arguments are re-evaluated for each line. Thus
|
|
|
4874 this works:
|
|
|
4875 *function-range-example* >
|
|
|
4876 :function Mynumber(arg)
|
|
|
4877 : echo line(".") . " " . a:arg
|
|
|
4878 :endfunction
|
|
|
4879 :1,5call Mynumber(getline("."))
|
|
|
4880 <
|
|
|
4881 The "a:firstline" and "a:lastline" are defined anyway, they
|
|
|
4882 can be used to do something different at the start or end of
|
|
|
4883 the range.
|
|
|
4884
|
|
|
4885 Example of a function that handles the range itself: >
|
|
|
4886
|
|
|
4887 :function Cont() range
|
|
|
4888 : execute (a:firstline + 1) . "," . a:lastline . 's/^/\t\\ '
|
|
|
4889 :endfunction
|
|
|
4890 :4,8call Cont()
|
|
|
4891 <
|
|
|
4892 This function inserts the continuation character "\" in front
|
|
|
4893 of all the lines in the range, except the first one.
|
|
|
4894
|
|
|
4895 *E132*
|
|
|
4896 The recursiveness of user functions is restricted with the |'maxfuncdepth'|
|
|
|
4897 option.
|
|
|
4898
|
|
161
|
4899
|
|
|
4900 AUTOMATICALLY LOADING FUNCTIONS ~
|
|
7
|
4901 *autoload-functions*
|
|
|
4902 When using many or large functions, it's possible to automatically define them
|
|
161
|
4903 only when they are used. There are two methods: with an autocommand and with
|
|
|
4904 the "autoload" directory in 'runtimepath'.
|
|
|
4905
|
|
|
4906
|
|
|
4907 Using an autocommand ~
|
|
|
4908
|
|
170
|
4909 This is introduced in the user manual, section |41.14|.
|
|
|
4910
|
|
161
|
4911 The autocommand is useful if you have a plugin that is a long Vim script file.
|
|
|
4912 You can define the autocommand and quickly quit the script with |:finish|.
|
|
|
4913 That makes Vim startup faster. The autocommand should then load the same file
|
|
|
4914 again, setting a variable to skip the |:finish| command.
|
|
|
4915
|
|
|
4916 Use the FuncUndefined autocommand event with a pattern that matches the
|
|
|
4917 function(s) to be defined. Example: >
|
|
7
|
4918
|
|
|
4919 :au FuncUndefined BufNet* source ~/vim/bufnetfuncs.vim
|
|
|
4920
|
|
|
4921 The file "~/vim/bufnetfuncs.vim" should then define functions that start with
|
|
|
4922 "BufNet". Also see |FuncUndefined|.
|
|
|
4923
|
|
161
|
4924
|
|
|
4925 Using an autoload script ~
|
|
168
|
4926 *autoload* *E746*
|
|
170
|
4927 This is introduced in the user manual, section |41.15|.
|
|
|
4928
|
|
161
|
4929 Using a script in the "autoload" directory is simpler, but requires using
|
|
|
4930 exactly the right file name. A function that can be autoloaded has a name
|
|
|
4931 like this: >
|
|
|
4932
|
|
270
|
4933 :call filename#funcname()
|
|
161
|
4934
|
|
|
4935 When such a function is called, and it is not defined yet, Vim will search the
|
|
|
4936 "autoload" directories in 'runtimepath' for a script file called
|
|
|
4937 "filename.vim". For example "~/.vim/autoload/filename.vim". That file should
|
|
|
4938 then define the function like this: >
|
|
|
4939
|
|
270
|
4940 function filename#funcname()
|
|
161
|
4941 echo "Done!"
|
|
|
4942 endfunction
|
|
|
4943
|
|
|
4944 The file name and the name used before the colon in the function must match
|
|
|
4945 exactly, and the defined function must have the name exactly as it will be
|
|
|
4946 called.
|
|
|
4947
|
|
270
|
4948 It is possible to use subdirectories. Every # in the function name works like
|
|
|
4949 a path separator. Thus when calling a function: >
|
|
|
4950
|
|
|
4951 :call foo#bar#func()
|
|
161
|
4952
|
|
|
4953 Vim will look for the file "autoload/foo/bar.vim" in 'runtimepath'.
|
|
|
4954
|
|
|
4955 The name before the first colon must be at least two characters long,
|
|
|
4956 otherwise it looks like a scope, such as "s:".
|
|
|
4957
|
|
168
|
4958 This also works when reading a variable that has not been set yet: >
|
|
|
4959
|
|
270
|
4960 :let l = foo#bar#lvar
|
|
168
|
4961
|
|
|
4962 When assigning a value to such a variable nothing special happens. This can
|
|
|
4963 be used to pass settings to the autoload script before it's loaded: >
|
|
|
4964
|
|
270
|
4965 :let foo#bar#toggle = 1
|
|
|
4966 :call foo#bar#func()
|
|
168
|
4967
|
|
164
|
4968 Note that when you make a mistake and call a function that is supposed to be
|
|
|
4969 defined in an autoload script, but the script doesn't actually define the
|
|
|
4970 function, the script will be sourced every time you try to call the function.
|
|
168
|
4971 And you will get an error message every time.
|
|
|
4972
|
|
|
4973 Also note that if you have two script files, and one calls a function in the
|
|
|
4974 other and vise versa, before the used function is defined, it won't work.
|
|
|
4975 Avoid using the autoload functionality at the toplevel.
|
|
161
|
4976
|
|
7
|
4977 ==============================================================================
|
|
|
4978 6. Curly braces names *curly-braces-names*
|
|
|
4979
|
|
|
4980 Wherever you can use a variable, you can use a "curly braces name" variable.
|
|
|
4981 This is a regular variable name with one or more expressions wrapped in braces
|
|
|
4982 {} like this: >
|
|
|
4983 my_{adjective}_variable
|
|
|
4984
|
|
|
4985 When Vim encounters this, it evaluates the expression inside the braces, puts
|
|
|
4986 that in place of the expression, and re-interprets the whole as a variable
|
|
|
4987 name. So in the above example, if the variable "adjective" was set to
|
|
|
4988 "noisy", then the reference would be to "my_noisy_variable", whereas if
|
|
|
4989 "adjective" was set to "quiet", then it would be to "my_quiet_variable".
|
|
|
4990
|
|
|
4991 One application for this is to create a set of variables governed by an option
|
|
|
4992 value. For example, the statement >
|
|
|
4993 echo my_{&background}_message
|
|
|
4994
|
|
|
4995 would output the contents of "my_dark_message" or "my_light_message" depending
|
|
|
4996 on the current value of 'background'.
|
|
|
4997
|
|
|
4998 You can use multiple brace pairs: >
|
|
|
4999 echo my_{adverb}_{adjective}_message
|
|
|
5000 ..or even nest them: >
|
|
|
5001 echo my_{ad{end_of_word}}_message
|
|
|
5002 where "end_of_word" is either "verb" or "jective".
|
|
|
5003
|
|
|
5004 However, the expression inside the braces must evaluate to a valid single
|
|
236
|
5005 variable name, e.g. this is invalid: >
|
|
7
|
5006 :let foo='a + b'
|
|
|
5007 :echo c{foo}d
|
|
|
5008 .. since the result of expansion is "ca + bd", which is not a variable name.
|
|
|
5009
|
|
|
5010 *curly-braces-function-names*
|
|
|
5011 You can call and define functions by an evaluated name in a similar way.
|
|
|
5012 Example: >
|
|
|
5013 :let func_end='whizz'
|
|
|
5014 :call my_func_{func_end}(parameter)
|
|
|
5015
|
|
|
5016 This would call the function "my_func_whizz(parameter)".
|
|
|
5017
|
|
|
5018 ==============================================================================
|
|
|
5019 7. Commands *expression-commands*
|
|
|
5020
|
|
|
5021 :let {var-name} = {expr1} *:let* *E18*
|
|
|
5022 Set internal variable {var-name} to the result of the
|
|
|
5023 expression {expr1}. The variable will get the type
|
|
|
5024 from the {expr}. If {var-name} didn't exist yet, it
|
|
|
5025 is created.
|
|
|
5026
|
|
85
|
5027 :let {var-name}[{idx}] = {expr1} *E689*
|
|
|
5028 Set a list item to the result of the expression
|
|
|
5029 {expr1}. {var-name} must refer to a list and {idx}
|
|
|
5030 must be a valid index in that list. For nested list
|
|
|
5031 the index can be repeated.
|
|
|
5032 This cannot be used to add an item to a list.
|
|
|
5033
|
|
114
|
5034 *E711* *E719*
|
|
|
5035 :let {var-name}[{idx1}:{idx2}] = {expr1} *E708* *E709* *E710*
|
|
87
|
5036 Set a sequence of items in a List to the result of the
|
|
|
5037 expression {expr1}, which must be a list with the
|
|
|
5038 correct number of items.
|
|
|
5039 {idx1} can be omitted, zero is used instead.
|
|
|
5040 {idx2} can be omitted, meaning the end of the list.
|
|
|
5041 When the selected range of items is partly past the
|
|
|
5042 end of the list, items will be added.
|
|
|
5043
|
|
153
|
5044 *:let+=* *:let-=* *:let.=* *E734*
|
|
114
|
5045 :let {var} += {expr1} Like ":let {var} = {var} + {expr1}".
|
|
|
5046 :let {var} -= {expr1} Like ":let {var} = {var} - {expr1}".
|
|
|
5047 :let {var} .= {expr1} Like ":let {var} = {var} . {expr1}".
|
|
|
5048 These fail if {var} was not set yet and when the type
|
|
|
5049 of {var} and {expr1} don't fit the operator.
|
|
|
5050
|
|
|
5051
|
|
7
|
5052 :let ${env-name} = {expr1} *:let-environment* *:let-$*
|
|
|
5053 Set environment variable {env-name} to the result of
|
|
|
5054 the expression {expr1}. The type is always String.
|
|
114
|
5055 :let ${env-name} .= {expr1}
|
|
|
5056 Append {expr1} to the environment variable {env-name}.
|
|
|
5057 If the environment variable didn't exist yet this
|
|
|
5058 works like "=".
|
|
7
|
5059
|
|
|
5060 :let @{reg-name} = {expr1} *:let-register* *:let-@*
|
|
|
5061 Write the result of the expression {expr1} in register
|
|
|
5062 {reg-name}. {reg-name} must be a single letter, and
|
|
|
5063 must be the name of a writable register (see
|
|
|
5064 |registers|). "@@" can be used for the unnamed
|
|
|
5065 register, "@/" for the search pattern.
|
|
|
5066 If the result of {expr1} ends in a <CR> or <NL>, the
|
|
|
5067 register will be linewise, otherwise it will be set to
|
|
|
5068 characterwise.
|
|
|
5069 This can be used to clear the last search pattern: >
|
|
|
5070 :let @/ = ""
|
|
|
5071 < This is different from searching for an empty string,
|
|
|
5072 that would match everywhere.
|
|
|
5073
|
|
114
|
5074 :let @{reg-name} .= {expr1}
|
|
|
5075 Append {expr1} to register {reg-name}. If the
|
|
|
5076 register was empty it's like setting it to {expr1}.
|
|
|
5077
|
|
7
|
5078 :let &{option-name} = {expr1} *:let-option* *:let-star*
|
|
|
5079 Set option {option-name} to the result of the
|
|
68
|
5080 expression {expr1}. A String or Number value is
|
|
|
5081 always converted to the type of the option.
|
|
7
|
5082 For an option local to a window or buffer the effect
|
|
|
5083 is just like using the |:set| command: both the local
|
|
|
5084 value and the global value is changed.
|
|
68
|
5085 Example: >
|
|
|
5086 :let &path = &path . ',/usr/local/include'
|
|
7
|
5087
|
|
114
|
5088 :let &{option-name} .= {expr1}
|
|
|
5089 For a string option: Append {expr1} to the value.
|
|
|
5090 Does not insert a comma like |:set+=|.
|
|
|
5091
|
|
|
5092 :let &{option-name} += {expr1}
|
|
|
5093 :let &{option-name} -= {expr1}
|
|
|
5094 For a number or boolean option: Add or subtract
|
|
|
5095 {expr1}.
|
|
|
5096
|
|
7
|
5097 :let &l:{option-name} = {expr1}
|
|
114
|
5098 :let &l:{option-name} .= {expr1}
|
|
|
5099 :let &l:{option-name} += {expr1}
|
|
|
5100 :let &l:{option-name} -= {expr1}
|
|
7
|
5101 Like above, but only set the local value of an option
|
|
|
5102 (if there is one). Works like |:setlocal|.
|
|
|
5103
|
|
|
5104 :let &g:{option-name} = {expr1}
|
|
114
|
5105 :let &g:{option-name} .= {expr1}
|
|
|
5106 :let &g:{option-name} += {expr1}
|
|
|
5107 :let &g:{option-name} -= {expr1}
|
|
7
|
5108 Like above, but only set the global value of an option
|
|
|
5109 (if there is one). Works like |:setglobal|.
|
|
|
5110
|
|
85
|
5111 :let [{name1}, {name2}, ...] = {expr1} *:let-unpack* *E687* *E688*
|
|
68
|
5112 {expr1} must evaluate to a List. The first item in
|
|
|
5113 the list is assigned to {name1}, the second item to
|
|
|
5114 {name2}, etc.
|
|
|
5115 The number of names must match the number of items in
|
|
|
5116 the List.
|
|
|
5117 Each name can be one of the items of the ":let"
|
|
|
5118 command as mentioned above.
|
|
|
5119 Example: >
|
|
|
5120 :let [s, item] = GetItem(s)
|
|
114
|
5121 < Detail: {expr1} is evaluated first, then the
|
|
|
5122 assignments are done in sequence. This matters if
|
|
|
5123 {name2} depends on {name1}. Example: >
|
|
|
5124 :let x = [0, 1]
|
|
|
5125 :let i = 0
|
|
|
5126 :let [i, x[i]] = [1, 2]
|
|
|
5127 :echo x
|
|
|
5128 < The result is [0, 2].
|
|
|
5129
|
|
|
5130 :let [{name1}, {name2}, ...] .= {expr1}
|
|
|
5131 :let [{name1}, {name2}, ...] += {expr1}
|
|
|
5132 :let [{name1}, {name2}, ...] -= {expr1}
|
|
|
5133 Like above, but append/add/subtract the value for each
|
|
|
5134 List item.
|
|
68
|
5135
|
|
|
5136 :let [{name}, ..., ; {lastname}] = {expr1}
|
|
140
|
5137 Like |:let-unpack| above, but the List may have more
|
|
114
|
5138 items than there are names. A list of the remaining
|
|
|
5139 items is assigned to {lastname}. If there are no
|
|
|
5140 remaining items {lastname} is set to an empty list.
|
|
68
|
5141 Example: >
|
|
|
5142 :let [a, b; rest] = ["aval", "bval", 3, 4]
|
|
|
5143 <
|
|
114
|
5144 :let [{name}, ..., ; {lastname}] .= {expr1}
|
|
|
5145 :let [{name}, ..., ; {lastname}] += {expr1}
|
|
|
5146 :let [{name}, ..., ; {lastname}] -= {expr1}
|
|
|
5147 Like above, but append/add/subtract the value for each
|
|
|
5148 List item.
|
|
7
|
5149 *E106*
|
|
114
|
5150 :let {var-name} .. List the value of variable {var-name}. Multiple
|
|
123
|
5151 variable names may be given. Special names recognized
|
|
|
5152 here: *E738*
|
|
|
5153 g: global variables.
|
|
|
5154 b: local buffer variables.
|
|
|
5155 w: local window variables.
|
|
|
5156 v: Vim variables.
|
|
7
|
5157
|
|
55
|
5158 :let List the values of all variables. The type of the
|
|
|
5159 variable is indicated before the value:
|
|
|
5160 <nothing> String
|
|
|
5161 # Number
|
|
|
5162 * Funcref
|
|
7
|
5163
|
|
148
|
5164
|
|
|
5165 :unl[et][!] {name} ... *:unlet* *:unl* *E108*
|
|
|
5166 Remove the internal variable {name}. Several variable
|
|
|
5167 names can be given, they are all removed. The name
|
|
|
5168 may also be a List or Dictionary item.
|
|
7
|
5169 With [!] no error message is given for non-existing
|
|
|
5170 variables.
|
|
108
|
5171 One or more items from a List can be removed: >
|
|
|
5172 :unlet list[3] " remove fourth item
|
|
|
5173 :unlet list[3:] " remove fourth item to last
|
|
|
5174 < One item from a Dictionary can be removed at a time: >
|
|
|
5175 :unlet dict['two']
|
|
|
5176 :unlet dict.two
|
|
7
|
5177
|
|
148
|
5178 :lockv[ar][!] [depth] {name} ... *:lockvar* *:lockv*
|
|
|
5179 Lock the internal variable {name}. Locking means that
|
|
|
5180 it can no longer be changed (until it is unlocked).
|
|
|
5181 A locked variable can be deleted: >
|
|
|
5182 :lockvar v
|
|
|
5183 :let v = 'asdf' " fails!
|
|
|
5184 :unlet v
|
|
|
5185 < *E741*
|
|
|
5186 If you try to change a locked variable you get an
|
|
|
5187 error message: "E741: Value of {name} is locked"
|
|
|
5188
|
|
|
5189 [depth] is relevant when locking a List or Dictionary.
|
|
|
5190 It specifies how deep the locking goes:
|
|
|
5191 1 Lock the List or Dictionary itself,
|
|
|
5192 cannot add or remove items, but can
|
|
|
5193 still change their values.
|
|
|
5194 2 Also lock the values, cannot change
|
|
|
5195 the items. If an item is a List or
|
|
|
5196 Dictionary, cannot add or remove
|
|
|
5197 items, but can still change the
|
|
|
5198 values.
|
|
|
5199 3 Like 2 but for the List/Dictionary in
|
|
|
5200 the List/Dictionary, one level deeper.
|
|
|
5201 The default [depth] is 2, thus when {name} is a List
|
|
|
5202 or Dictionary the values cannot be changed.
|
|
|
5203 *E743*
|
|
|
5204 For unlimited depth use [!] and omit [depth].
|
|
|
5205 However, there is a maximum depth of 100 to catch
|
|
|
5206 loops.
|
|
|
5207
|
|
|
5208 Note that when two variables refer to the same List
|
|
|
5209 and you lock one of them, the List will also be locked
|
|
|
5210 when used through the other variable. Example: >
|
|
|
5211 :let l = [0, 1, 2, 3]
|
|
|
5212 :let cl = l
|
|
|
5213 :lockvar l
|
|
|
5214 :let cl[1] = 99 " won't work!
|
|
|
5215 < You may want to make a copy of a list to avoid this.
|
|
|
5216 See |deepcopy()|.
|
|
|
5217
|
|
|
5218
|
|
|
5219 :unlo[ckvar][!] [depth] {name} ... *:unlockvar* *:unlo*
|
|
|
5220 Unlock the internal variable {name}. Does the
|
|
|
5221 opposite of |:lockvar|.
|
|
|
5222
|
|
|
5223
|
|
7
|
5224 :if {expr1} *:if* *:endif* *:en* *E171* *E579* *E580*
|
|
|
5225 :en[dif] Execute the commands until the next matching ":else"
|
|
|
5226 or ":endif" if {expr1} evaluates to non-zero.
|
|
|
5227
|
|
|
5228 From Vim version 4.5 until 5.0, every Ex command in
|
|
|
5229 between the ":if" and ":endif" is ignored. These two
|
|
|
5230 commands were just to allow for future expansions in a
|
|
|
5231 backwards compatible way. Nesting was allowed. Note
|
|
|
5232 that any ":else" or ":elseif" was ignored, the "else"
|
|
|
5233 part was not executed either.
|
|
|
5234
|
|
|
5235 You can use this to remain compatible with older
|
|
|
5236 versions: >
|
|
|
5237 :if version >= 500
|
|
|
5238 : version-5-specific-commands
|
|
|
5239 :endif
|
|
|
5240 < The commands still need to be parsed to find the
|
|
|
5241 "endif". Sometimes an older Vim has a problem with a
|
|
|
5242 new command. For example, ":silent" is recognized as
|
|
|
5243 a ":substitute" command. In that case ":execute" can
|
|
|
5244 avoid problems: >
|
|
|
5245 :if version >= 600
|
|
|
5246 : execute "silent 1,$delete"
|
|
|
5247 :endif
|
|
|
5248 <
|
|
|
5249 NOTE: The ":append" and ":insert" commands don't work
|
|
|
5250 properly in between ":if" and ":endif".
|
|
|
5251
|
|
|
5252 *:else* *:el* *E581* *E583*
|
|
|
5253 :el[se] Execute the commands until the next matching ":else"
|
|
|
5254 or ":endif" if they previously were not being
|
|
|
5255 executed.
|
|
|
5256
|
|
|
5257 *:elseif* *:elsei* *E582* *E584*
|
|
|
5258 :elsei[f] {expr1} Short for ":else" ":if", with the addition that there
|
|
|
5259 is no extra ":endif".
|
|
|
5260
|
|
|
5261 :wh[ile] {expr1} *:while* *:endwhile* *:wh* *:endw*
|
|
114
|
5262 *E170* *E585* *E588* *E733*
|
|
7
|
5263 :endw[hile] Repeat the commands between ":while" and ":endwhile",
|
|
|
5264 as long as {expr1} evaluates to non-zero.
|
|
|
5265 When an error is detected from a command inside the
|
|
|
5266 loop, execution continues after the "endwhile".
|
|
75
|
5267 Example: >
|
|
|
5268 :let lnum = 1
|
|
|
5269 :while lnum <= line("$")
|
|
|
5270 :call FixLine(lnum)
|
|
|
5271 :let lnum = lnum + 1
|
|
|
5272 :endwhile
|
|
|
5273 <
|
|
7
|
5274 NOTE: The ":append" and ":insert" commands don't work
|
|
99
|
5275 properly inside a ":while" and ":for" loop.
|
|
75
|
5276
|
|
114
|
5277 :for {var} in {list} *:for* *E690* *E732*
|
|
75
|
5278 :endfo[r] *:endfo* *:endfor*
|
|
|
5279 Repeat the commands between ":for" and ":endfor" for
|
|
158
|
5280 each item in {list}. Variable {var} is set to the
|
|
79
|
5281 value of each item.
|
|
|
5282 When an error is detected for a command inside the
|
|
75
|
5283 loop, execution continues after the "endfor".
|
|
464
|
5284 Changing {list} inside the loop affects what items are
|
|
|
5285 used. Make a copy if this is unwanted: >
|
|
79
|
5286 :for item in copy(mylist)
|
|
|
5287 < When not making a copy, Vim stores a reference to the
|
|
|
5288 next item in the list, before executing the commands
|
|
|
5289 with the current item. Thus the current item can be
|
|
|
5290 removed without effect. Removing any later item means
|
|
|
5291 it will not be found. Thus the following example
|
|
|
5292 works (an inefficient way to make a list empty): >
|
|
|
5293 :for item in mylist
|
|
75
|
5294 :call remove(mylist, 0)
|
|
|
5295 :endfor
|
|
87
|
5296 < Note that reordering the list (e.g., with sort() or
|
|
|
5297 reverse()) may have unexpected effects.
|
|
|
5298 Note that the type of each list item should be
|
|
75
|
5299 identical to avoid errors for the type of {var}
|
|
|
5300 changing. Unlet the variable at the end of the loop
|
|
|
5301 to allow multiple item types.
|
|
|
5302
|
|
|
5303 :for [{var1}, {var2}, ...] in {listlist}
|
|
|
5304 :endfo[r]
|
|
|
5305 Like ":for" above, but each item in {listlist} must be
|
|
|
5306 a list, of which each item is assigned to {var1},
|
|
|
5307 {var2}, etc. Example: >
|
|
|
5308 :for [lnum, col] in [[1, 3], [2, 5], [3, 8]]
|
|
|
5309 :echo getline(lnum)[col]
|
|
|
5310 :endfor
|
|
|
5311 <
|
|
7
|
5312 *:continue* *:con* *E586*
|
|
75
|
5313 :con[tinue] When used inside a ":while" or ":for" loop, jumps back
|
|
|
5314 to the start of the loop.
|
|
|
5315 If it is used after a |:try| inside the loop but
|
|
|
5316 before the matching |:finally| (if present), the
|
|
|
5317 commands following the ":finally" up to the matching
|
|
|
5318 |:endtry| are executed first. This process applies to
|
|
|
5319 all nested ":try"s inside the loop. The outermost
|
|
|
5320 ":endtry" then jumps back to the start of the loop.
|
|
7
|
5321
|
|
|
5322 *:break* *:brea* *E587*
|
|
75
|
5323 :brea[k] When used inside a ":while" or ":for" loop, skips to
|
|
|
5324 the command after the matching ":endwhile" or
|
|
|
5325 ":endfor".
|
|
|
5326 If it is used after a |:try| inside the loop but
|
|
|
5327 before the matching |:finally| (if present), the
|
|
|
5328 commands following the ":finally" up to the matching
|
|
|
5329 |:endtry| are executed first. This process applies to
|
|
|
5330 all nested ":try"s inside the loop. The outermost
|
|
|
5331 ":endtry" then jumps to the command after the loop.
|
|
7
|
5332
|
|
|
5333 :try *:try* *:endt* *:endtry* *E600* *E601* *E602*
|
|
|
5334 :endt[ry] Change the error handling for the commands between
|
|
|
5335 ":try" and ":endtry" including everything being
|
|
|
5336 executed across ":source" commands, function calls,
|
|
|
5337 or autocommand invocations.
|
|
|
5338
|
|
|
5339 When an error or interrupt is detected and there is
|
|
|
5340 a |:finally| command following, execution continues
|
|
|
5341 after the ":finally". Otherwise, or when the
|
|
|
5342 ":endtry" is reached thereafter, the next
|
|
|
5343 (dynamically) surrounding ":try" is checked for
|
|
|
5344 a corresponding ":finally" etc. Then the script
|
|
|
5345 processing is terminated. (Whether a function
|
|
|
5346 definition has an "abort" argument does not matter.)
|
|
|
5347 Example: >
|
|
|
5348 :try | edit too much | finally | echo "cleanup" | endtry
|
|
|
5349 :echo "impossible" " not reached, script terminated above
|
|
|
5350 <
|
|
|
5351 Moreover, an error or interrupt (dynamically) inside
|
|
|
5352 ":try" and ":endtry" is converted to an exception. It
|
|
|
5353 can be caught as if it were thrown by a |:throw|
|
|
|
5354 command (see |:catch|). In this case, the script
|
|
|
5355 processing is not terminated.
|
|
|
5356
|
|
|
5357 The value "Vim:Interrupt" is used for an interrupt
|
|
|
5358 exception. An error in a Vim command is converted
|
|
|
5359 to a value of the form "Vim({command}):{errmsg}",
|
|
|
5360 other errors are converted to a value of the form
|
|
|
5361 "Vim:{errmsg}". {command} is the full command name,
|
|
|
5362 and {errmsg} is the message that is displayed if the
|
|
|
5363 error exception is not caught, always beginning with
|
|
|
5364 the error number.
|
|
|
5365 Examples: >
|
|
|
5366 :try | sleep 100 | catch /^Vim:Interrupt$/ | endtry
|
|
|
5367 :try | edit | catch /^Vim(edit):E\d\+/ | echo "error" | endtry
|
|
|
5368 <
|
|
|
5369 *:cat* *:catch* *E603* *E604* *E605*
|
|
|
5370 :cat[ch] /{pattern}/ The following commands until the next ":catch",
|
|
|
5371 |:finally|, or |:endtry| that belongs to the same
|
|
|
5372 |:try| as the ":catch" are executed when an exception
|
|
|
5373 matching {pattern} is being thrown and has not yet
|
|
|
5374 been caught by a previous ":catch". Otherwise, these
|
|
|
5375 commands are skipped.
|
|
|
5376 When {pattern} is omitted all errors are caught.
|
|
|
5377 Examples: >
|
|
|
5378 :catch /^Vim:Interrupt$/ " catch interrupts (CTRL-C)
|
|
|
5379 :catch /^Vim\%((\a\+)\)\=:E/ " catch all Vim errors
|
|
|
5380 :catch /^Vim\%((\a\+)\)\=:/ " catch errors and interrupts
|
|
|
5381 :catch /^Vim(write):/ " catch all errors in :write
|
|
|
5382 :catch /^Vim\%((\a\+)\)\=:E123/ " catch error E123
|
|
|
5383 :catch /my-exception/ " catch user exception
|
|
|
5384 :catch /.*/ " catch everything
|
|
|
5385 :catch " same as /.*/
|
|
|
5386 <
|
|
|
5387 Another character can be used instead of / around the
|
|
|
5388 {pattern}, so long as it does not have a special
|
|
|
5389 meaning (e.g., '|' or '"') and doesn't occur inside
|
|
|
5390 {pattern}.
|
|
|
5391 NOTE: It is not reliable to ":catch" the TEXT of
|
|
|
5392 an error message because it may vary in different
|
|
|
5393 locales.
|
|
|
5394
|
|
|
5395 *:fina* *:finally* *E606* *E607*
|
|
|
5396 :fina[lly] The following commands until the matching |:endtry|
|
|
|
5397 are executed whenever the part between the matching
|
|
|
5398 |:try| and the ":finally" is left: either by falling
|
|
|
5399 through to the ":finally" or by a |:continue|,
|
|
|
5400 |:break|, |:finish|, or |:return|, or by an error or
|
|
|
5401 interrupt or exception (see |:throw|).
|
|
|
5402
|
|
|
5403 *:th* *:throw* *E608*
|
|
|
5404 :th[row] {expr1} The {expr1} is evaluated and thrown as an exception.
|
|
|
5405 If the ":throw" is used after a |:try| but before the
|
|
|
5406 first corresponding |:catch|, commands are skipped
|
|
|
5407 until the first ":catch" matching {expr1} is reached.
|
|
|
5408 If there is no such ":catch" or if the ":throw" is
|
|
|
5409 used after a ":catch" but before the |:finally|, the
|
|
|
5410 commands following the ":finally" (if present) up to
|
|
|
5411 the matching |:endtry| are executed. If the ":throw"
|
|
|
5412 is after the ":finally", commands up to the ":endtry"
|
|
|
5413 are skipped. At the ":endtry", this process applies
|
|
|
5414 again for the next dynamically surrounding ":try"
|
|
|
5415 (which may be found in a calling function or sourcing
|
|
|
5416 script), until a matching ":catch" has been found.
|
|
|
5417 If the exception is not caught, the command processing
|
|
|
5418 is terminated.
|
|
|
5419 Example: >
|
|
|
5420 :try | throw "oops" | catch /^oo/ | echo "caught" | endtry
|
|
|
5421 <
|
|
|
5422
|
|
|
5423 *:ec* *:echo*
|
|
|
5424 :ec[ho] {expr1} .. Echoes each {expr1}, with a space in between. The
|
|
|
5425 first {expr1} starts on a new line.
|
|
|
5426 Also see |:comment|.
|
|
|
5427 Use "\n" to start a new line. Use "\r" to move the
|
|
|
5428 cursor to the first column.
|
|
|
5429 Uses the highlighting set by the |:echohl| command.
|
|
|
5430 Cannot be followed by a comment.
|
|
|
5431 Example: >
|
|
|
5432 :echo "the value of 'shell' is" &shell
|
|
|
5433 < A later redraw may make the message disappear again.
|
|
|
5434 To avoid that a command from before the ":echo" causes
|
|
|
5435 a redraw afterwards (redraws are often postponed until
|
|
|
5436 you type something), force a redraw with the |:redraw|
|
|
|
5437 command. Example: >
|
|
|
5438 :new | redraw | echo "there is a new window"
|
|
|
5439 <
|
|
|
5440 *:echon*
|
|
|
5441 :echon {expr1} .. Echoes each {expr1}, without anything added. Also see
|
|
|
5442 |:comment|.
|
|
|
5443 Uses the highlighting set by the |:echohl| command.
|
|
|
5444 Cannot be followed by a comment.
|
|
|
5445 Example: >
|
|
|
5446 :echon "the value of 'shell' is " &shell
|
|
|
5447 <
|
|
|
5448 Note the difference between using ":echo", which is a
|
|
|
5449 Vim command, and ":!echo", which is an external shell
|
|
|
5450 command: >
|
|
|
5451 :!echo % --> filename
|
|
|
5452 < The arguments of ":!" are expanded, see |:_%|. >
|
|
|
5453 :!echo "%" --> filename or "filename"
|
|
|
5454 < Like the previous example. Whether you see the double
|
|
|
5455 quotes or not depends on your 'shell'. >
|
|
|
5456 :echo % --> nothing
|
|
|
5457 < The '%' is an illegal character in an expression. >
|
|
|
5458 :echo "%" --> %
|
|
|
5459 < This just echoes the '%' character. >
|
|
|
5460 :echo expand("%") --> filename
|
|
|
5461 < This calls the expand() function to expand the '%'.
|
|
|
5462
|
|
|
5463 *:echoh* *:echohl*
|
|
|
5464 :echoh[l] {name} Use the highlight group {name} for the following
|
|
|
5465 |:echo|, |:echon| and |:echomsg| commands. Also used
|
|
|
5466 for the |input()| prompt. Example: >
|
|
|
5467 :echohl WarningMsg | echo "Don't panic!" | echohl None
|
|
|
5468 < Don't forget to set the group back to "None",
|
|
|
5469 otherwise all following echo's will be highlighted.
|
|
|
5470
|
|
|
5471 *:echom* *:echomsg*
|
|
|
5472 :echom[sg] {expr1} .. Echo the expression(s) as a true message, saving the
|
|
|
5473 message in the |message-history|.
|
|
|
5474 Spaces are placed between the arguments as with the
|
|
|
5475 |:echo| command. But unprintable characters are
|
|
|
5476 displayed, not interpreted.
|
|
|
5477 Uses the highlighting set by the |:echohl| command.
|
|
|
5478 Example: >
|
|
|
5479 :echomsg "It's a Zizzer Zazzer Zuzz, as you can plainly see."
|
|
|
5480 <
|
|
|
5481 *:echoe* *:echoerr*
|
|
|
5482 :echoe[rr] {expr1} .. Echo the expression(s) as an error message, saving the
|
|
|
5483 message in the |message-history|. When used in a
|
|
|
5484 script or function the line number will be added.
|
|
|
5485 Spaces are placed between the arguments as with the
|
|
|
5486 :echo command. When used inside a try conditional,
|
|
|
5487 the message is raised as an error exception instead
|
|
|
5488 (see |try-echoerr|).
|
|
|
5489 Example: >
|
|
|
5490 :echoerr "This script just failed!"
|
|
|
5491 < If you just want a highlighted message use |:echohl|.
|
|
|
5492 And to get a beep: >
|
|
|
5493 :exe "normal \<Esc>"
|
|
|
5494 <
|
|
|
5495 *:exe* *:execute*
|
|
|
5496 :exe[cute] {expr1} .. Executes the string that results from the evaluation
|
|
|
5497 of {expr1} as an Ex command. Multiple arguments are
|
|
|
5498 concatenated, with a space in between. {expr1} is
|
|
|
5499 used as the processed command, command line editing
|
|
|
5500 keys are not recognized.
|
|
|
5501 Cannot be followed by a comment.
|
|
|
5502 Examples: >
|
|
|
5503 :execute "buffer " nextbuf
|
|
|
5504 :execute "normal " count . "w"
|
|
|
5505 <
|
|
|
5506 ":execute" can be used to append a command to commands
|
|
|
5507 that don't accept a '|'. Example: >
|
|
|
5508 :execute '!ls' | echo "theend"
|
|
|
5509
|
|
|
5510 < ":execute" is also a nice way to avoid having to type
|
|
|
5511 control characters in a Vim script for a ":normal"
|
|
|
5512 command: >
|
|
|
5513 :execute "normal ixxx\<Esc>"
|
|
|
5514 < This has an <Esc> character, see |expr-string|.
|
|
|
5515
|
|
|
5516 Note: The executed string may be any command-line, but
|
|
99
|
5517 you cannot start or end a "while", "for" or "if"
|
|
|
5518 command. Thus this is illegal: >
|
|
7
|
5519 :execute 'while i > 5'
|
|
|
5520 :execute 'echo "test" | break'
|
|
|
5521 <
|
|
|
5522 It is allowed to have a "while" or "if" command
|
|
|
5523 completely in the executed string: >
|
|
|
5524 :execute 'while i < 5 | echo i | let i = i + 1 | endwhile'
|
|
|
5525 <
|
|
|
5526
|
|
|
5527 *:comment*
|
|
|
5528 ":execute", ":echo" and ":echon" cannot be followed by
|
|
|
5529 a comment directly, because they see the '"' as the
|
|
|
5530 start of a string. But, you can use '|' followed by a
|
|
|
5531 comment. Example: >
|
|
|
5532 :echo "foo" | "this is a comment
|
|
|
5533
|
|
|
5534 ==============================================================================
|
|
|
5535 8. Exception handling *exception-handling*
|
|
|
5536
|
|
|
5537 The Vim script language comprises an exception handling feature. This section
|
|
|
5538 explains how it can be used in a Vim script.
|
|
|
5539
|
|
|
5540 Exceptions may be raised by Vim on an error or on interrupt, see
|
|
|
5541 |catch-errors| and |catch-interrupt|. You can also explicitly throw an
|
|
|
5542 exception by using the ":throw" command, see |throw-catch|.
|
|
|
5543
|
|
|
5544
|
|
|
5545 TRY CONDITIONALS *try-conditionals*
|
|
|
5546
|
|
|
5547 Exceptions can be caught or can cause cleanup code to be executed. You can
|
|
|
5548 use a try conditional to specify catch clauses (that catch exceptions) and/or
|
|
|
5549 a finally clause (to be executed for cleanup).
|
|
|
5550 A try conditional begins with a |:try| command and ends at the matching
|
|
|
5551 |:endtry| command. In between, you can use a |:catch| command to start
|
|
|
5552 a catch clause, or a |:finally| command to start a finally clause. There may
|
|
|
5553 be none or multiple catch clauses, but there is at most one finally clause,
|
|
|
5554 which must not be followed by any catch clauses. The lines before the catch
|
|
|
5555 clauses and the finally clause is called a try block. >
|
|
|
5556
|
|
|
5557 :try
|
|
|
5558 : ...
|
|
|
5559 : ... TRY BLOCK
|
|
|
5560 : ...
|
|
|
5561 :catch /{pattern}/
|
|
|
5562 : ...
|
|
|
5563 : ... CATCH CLAUSE
|
|
|
5564 : ...
|
|
|
5565 :catch /{pattern}/
|
|
|
5566 : ...
|
|
|
5567 : ... CATCH CLAUSE
|
|
|
5568 : ...
|
|
|
5569 :finally
|
|
|
5570 : ...
|
|
|
5571 : ... FINALLY CLAUSE
|
|
|
5572 : ...
|
|
|
5573 :endtry
|
|
|
5574
|
|
|
5575 The try conditional allows to watch code for exceptions and to take the
|
|
|
5576 appropriate actions. Exceptions from the try block may be caught. Exceptions
|
|
|
5577 from the try block and also the catch clauses may cause cleanup actions.
|
|
|
5578 When no exception is thrown during execution of the try block, the control
|
|
|
5579 is transferred to the finally clause, if present. After its execution, the
|
|
|
5580 script continues with the line following the ":endtry".
|
|
|
5581 When an exception occurs during execution of the try block, the remaining
|
|
|
5582 lines in the try block are skipped. The exception is matched against the
|
|
|
5583 patterns specified as arguments to the ":catch" commands. The catch clause
|
|
|
5584 after the first matching ":catch" is taken, other catch clauses are not
|
|
|
5585 executed. The catch clause ends when the next ":catch", ":finally", or
|
|
|
5586 ":endtry" command is reached - whatever is first. Then, the finally clause
|
|
|
5587 (if present) is executed. When the ":endtry" is reached, the script execution
|
|
|
5588 continues in the following line as usual.
|
|
|
5589 When an exception that does not match any of the patterns specified by the
|
|
|
5590 ":catch" commands is thrown in the try block, the exception is not caught by
|
|
|
5591 that try conditional and none of the catch clauses is executed. Only the
|
|
|
5592 finally clause, if present, is taken. The exception pends during execution of
|
|
|
5593 the finally clause. It is resumed at the ":endtry", so that commands after
|
|
|
5594 the ":endtry" are not executed and the exception might be caught elsewhere,
|
|
|
5595 see |try-nesting|.
|
|
|
5596 When during execution of a catch clause another exception is thrown, the
|
|
|
5597 remaining lines in that catch clause are not executed. The new exception is
|
|
|
5598 not matched against the patterns in any of the ":catch" commands of the same
|
|
|
5599 try conditional and none of its catch clauses is taken. If there is, however,
|
|
|
5600 a finally clause, it is executed, and the exception pends during its
|
|
|
5601 execution. The commands following the ":endtry" are not executed. The new
|
|
|
5602 exception might, however, be caught elsewhere, see |try-nesting|.
|
|
|
5603 When during execution of the finally clause (if present) an exception is
|
|
|
5604 thrown, the remaining lines in the finally clause are skipped. If the finally
|
|
|
5605 clause has been taken because of an exception from the try block or one of the
|
|
|
5606 catch clauses, the original (pending) exception is discarded. The commands
|
|
|
5607 following the ":endtry" are not executed, and the exception from the finally
|
|
|
5608 clause is propagated and can be caught elsewhere, see |try-nesting|.
|
|
|
5609
|
|
|
5610 The finally clause is also executed, when a ":break" or ":continue" for
|
|
|
5611 a ":while" loop enclosing the complete try conditional is executed from the
|
|
|
5612 try block or a catch clause. Or when a ":return" or ":finish" is executed
|
|
|
5613 from the try block or a catch clause of a try conditional in a function or
|
|
|
5614 sourced script, respectively. The ":break", ":continue", ":return", or
|
|
|
5615 ":finish" pends during execution of the finally clause and is resumed when the
|
|
|
5616 ":endtry" is reached. It is, however, discarded when an exception is thrown
|
|
|
5617 from the finally clause.
|
|
|
5618 When a ":break" or ":continue" for a ":while" loop enclosing the complete
|
|
|
5619 try conditional or when a ":return" or ":finish" is encountered in the finally
|
|
|
5620 clause, the rest of the finally clause is skipped, and the ":break",
|
|
|
5621 ":continue", ":return" or ":finish" is executed as usual. If the finally
|
|
|
5622 clause has been taken because of an exception or an earlier ":break",
|
|
|
5623 ":continue", ":return", or ":finish" from the try block or a catch clause,
|
|
|
5624 this pending exception or command is discarded.
|
|
|
5625
|
|
|
5626 For examples see |throw-catch| and |try-finally|.
|
|
|
5627
|
|
|
5628
|
|
|
5629 NESTING OF TRY CONDITIONALS *try-nesting*
|
|
|
5630
|
|
|
5631 Try conditionals can be nested arbitrarily. That is, a complete try
|
|
|
5632 conditional can be put into the try block, a catch clause, or the finally
|
|
|
5633 clause of another try conditional. If the inner try conditional does not
|
|
|
5634 catch an exception thrown in its try block or throws a new exception from one
|
|
|
5635 of its catch clauses or its finally clause, the outer try conditional is
|
|
|
5636 checked according to the rules above. If the inner try conditional is in the
|
|
|
5637 try block of the outer try conditional, its catch clauses are checked, but
|
|
|
5638 otherwise only the finally clause is executed. It does not matter for
|
|
|
5639 nesting, whether the inner try conditional is directly contained in the outer
|
|
|
5640 one, or whether the outer one sources a script or calls a function containing
|
|
|
5641 the inner try conditional.
|
|
|
5642
|
|
|
5643 When none of the active try conditionals catches an exception, just their
|
|
|
5644 finally clauses are executed. Thereafter, the script processing terminates.
|
|
|
5645 An error message is displayed in case of an uncaught exception explicitly
|
|
|
5646 thrown by a ":throw" command. For uncaught error and interrupt exceptions
|
|
|
5647 implicitly raised by Vim, the error message(s) or interrupt message are shown
|
|
|
5648 as usual.
|
|
|
5649
|
|
|
5650 For examples see |throw-catch|.
|
|
|
5651
|
|
|
5652
|
|
|
5653 EXAMINING EXCEPTION HANDLING CODE *except-examine*
|
|
|
5654
|
|
|
5655 Exception handling code can get tricky. If you are in doubt what happens, set
|
|
|
5656 'verbose' to 13 or use the ":13verbose" command modifier when sourcing your
|
|
|
5657 script file. Then you see when an exception is thrown, discarded, caught, or
|
|
|
5658 finished. When using a verbosity level of at least 14, things pending in
|
|
|
5659 a finally clause are also shown. This information is also given in debug mode
|
|
|
5660 (see |debug-scripts|).
|
|
|
5661
|
|
|
5662
|
|
|
5663 THROWING AND CATCHING EXCEPTIONS *throw-catch*
|
|
|
5664
|
|
|
5665 You can throw any number or string as an exception. Use the |:throw| command
|
|
|
5666 and pass the value to be thrown as argument: >
|
|
|
5667 :throw 4711
|
|
|
5668 :throw "string"
|
|
|
5669 < *throw-expression*
|
|
|
5670 You can also specify an expression argument. The expression is then evaluated
|
|
|
5671 first, and the result is thrown: >
|
|
|
5672 :throw 4705 + strlen("string")
|
|
|
5673 :throw strpart("strings", 0, 6)
|
|
|
5674
|
|
|
5675 An exception might be thrown during evaluation of the argument of the ":throw"
|
|
|
5676 command. Unless it is caught there, the expression evaluation is abandoned.
|
|
|
5677 The ":throw" command then does not throw a new exception.
|
|
|
5678 Example: >
|
|
|
5679
|
|
|
5680 :function! Foo(arg)
|
|
|
5681 : try
|
|
|
5682 : throw a:arg
|
|
|
5683 : catch /foo/
|
|
|
5684 : endtry
|
|
|
5685 : return 1
|
|
|
5686 :endfunction
|
|
|
5687 :
|
|
|
5688 :function! Bar()
|
|
|
5689 : echo "in Bar"
|
|
|
5690 : return 4710
|
|
|
5691 :endfunction
|
|
|
5692 :
|
|
|
5693 :throw Foo("arrgh") + Bar()
|
|
|
5694
|
|
|
5695 This throws "arrgh", and "in Bar" is not displayed since Bar() is not
|
|
|
5696 executed. >
|
|
|
5697 :throw Foo("foo") + Bar()
|
|
|
5698 however displays "in Bar" and throws 4711.
|
|
|
5699
|
|
|
5700 Any other command that takes an expression as argument might also be
|
|
|
5701 abandoned by an (uncaught) exception during the expression evaluation. The
|
|
|
5702 exception is then propagated to the caller of the command.
|
|
|
5703 Example: >
|
|
|
5704
|
|
|
5705 :if Foo("arrgh")
|
|
|
5706 : echo "then"
|
|
|
5707 :else
|
|
|
5708 : echo "else"
|
|
|
5709 :endif
|
|
|
5710
|
|
|
5711 Here neither of "then" or "else" is displayed.
|
|
|
5712
|
|
|
5713 *catch-order*
|
|
|
5714 Exceptions can be caught by a try conditional with one or more |:catch|
|
|
|
5715 commands, see |try-conditionals|. The values to be caught by each ":catch"
|
|
|
5716 command can be specified as a pattern argument. The subsequent catch clause
|
|
|
5717 gets executed when a matching exception is caught.
|
|
|
5718 Example: >
|
|
|
5719
|
|
|
5720 :function! Foo(value)
|
|
|
5721 : try
|
|
|
5722 : throw a:value
|
|
|
5723 : catch /^\d\+$/
|
|
|
5724 : echo "Number thrown"
|
|
|
5725 : catch /.*/
|
|
|
5726 : echo "String thrown"
|
|
|
5727 : endtry
|
|
|
5728 :endfunction
|
|
|
5729 :
|
|
|
5730 :call Foo(0x1267)
|
|
|
5731 :call Foo('string')
|
|
|
5732
|
|
|
5733 The first call to Foo() displays "Number thrown", the second "String thrown".
|
|
|
5734 An exception is matched against the ":catch" commands in the order they are
|
|
|
5735 specified. Only the first match counts. So you should place the more
|
|
|
5736 specific ":catch" first. The following order does not make sense: >
|
|
|
5737
|
|
|
5738 : catch /.*/
|
|
|
5739 : echo "String thrown"
|
|
|
5740 : catch /^\d\+$/
|
|
|
5741 : echo "Number thrown"
|
|
|
5742
|
|
|
5743 The first ":catch" here matches always, so that the second catch clause is
|
|
|
5744 never taken.
|
|
|
5745
|
|
|
5746 *throw-variables*
|
|
|
5747 If you catch an exception by a general pattern, you may access the exact value
|
|
|
5748 in the variable |v:exception|: >
|
|
|
5749
|
|
|
5750 : catch /^\d\+$/
|
|
|
5751 : echo "Number thrown. Value is" v:exception
|
|
|
5752
|
|
|
5753 You may also be interested where an exception was thrown. This is stored in
|
|
|
5754 |v:throwpoint|. Note that "v:exception" and "v:throwpoint" are valid for the
|
|
|
5755 exception most recently caught as long it is not finished.
|
|
|
5756 Example: >
|
|
|
5757
|
|
|
5758 :function! Caught()
|
|
|
5759 : if v:exception != ""
|
|
|
5760 : echo 'Caught "' . v:exception . '" in ' . v:throwpoint
|
|
|
5761 : else
|
|
|
5762 : echo 'Nothing caught'
|
|
|
5763 : endif
|
|
|
5764 :endfunction
|
|
|
5765 :
|
|
|
5766 :function! Foo()
|
|
|
5767 : try
|
|
|
5768 : try
|
|
|
5769 : try
|
|
|
5770 : throw 4711
|
|
|
5771 : finally
|
|
|
5772 : call Caught()
|
|
|
5773 : endtry
|
|
|
5774 : catch /.*/
|
|
|
5775 : call Caught()
|
|
|
5776 : throw "oops"
|
|
|
5777 : endtry
|
|
|
5778 : catch /.*/
|
|
|
5779 : call Caught()
|
|
|
5780 : finally
|
|
|
5781 : call Caught()
|
|
|
5782 : endtry
|
|
|
5783 :endfunction
|
|
|
5784 :
|
|
|
5785 :call Foo()
|
|
|
5786
|
|
|
5787 This displays >
|
|
|
5788
|
|
|
5789 Nothing caught
|
|
|
5790 Caught "4711" in function Foo, line 4
|
|
|
5791 Caught "oops" in function Foo, line 10
|
|
|
5792 Nothing caught
|
|
|
5793
|
|
|
5794 A practical example: The following command ":LineNumber" displays the line
|
|
|
5795 number in the script or function where it has been used: >
|
|
|
5796
|
|
|
5797 :function! LineNumber()
|
|
|
5798 : return substitute(v:throwpoint, '.*\D\(\d\+\).*', '\1', "")
|
|
|
5799 :endfunction
|
|
|
5800 :command! LineNumber try | throw "" | catch | echo LineNumber() | endtry
|
|
|
5801 <
|
|
|
5802 *try-nested*
|
|
|
5803 An exception that is not caught by a try conditional can be caught by
|
|
|
5804 a surrounding try conditional: >
|
|
|
5805
|
|
|
5806 :try
|
|
|
5807 : try
|
|
|
5808 : throw "foo"
|
|
|
5809 : catch /foobar/
|
|
|
5810 : echo "foobar"
|
|
|
5811 : finally
|
|
|
5812 : echo "inner finally"
|
|
|
5813 : endtry
|
|
|
5814 :catch /foo/
|
|
|
5815 : echo "foo"
|
|
|
5816 :endtry
|
|
|
5817
|
|
|
5818 The inner try conditional does not catch the exception, just its finally
|
|
|
5819 clause is executed. The exception is then caught by the outer try
|
|
|
5820 conditional. The example displays "inner finally" and then "foo".
|
|
|
5821
|
|
|
5822 *throw-from-catch*
|
|
|
5823 You can catch an exception and throw a new one to be caught elsewhere from the
|
|
|
5824 catch clause: >
|
|
|
5825
|
|
|
5826 :function! Foo()
|
|
|
5827 : throw "foo"
|
|
|
5828 :endfunction
|
|
|
5829 :
|
|
|
5830 :function! Bar()
|
|
|
5831 : try
|
|
|
5832 : call Foo()
|
|
|
5833 : catch /foo/
|
|
|
5834 : echo "Caught foo, throw bar"
|
|
|
5835 : throw "bar"
|
|
|
5836 : endtry
|
|
|
5837 :endfunction
|
|
|
5838 :
|
|
|
5839 :try
|
|
|
5840 : call Bar()
|
|
|
5841 :catch /.*/
|
|
|
5842 : echo "Caught" v:exception
|
|
|
5843 :endtry
|
|
|
5844
|
|
|
5845 This displays "Caught foo, throw bar" and then "Caught bar".
|
|
|
5846
|
|
|
5847 *rethrow*
|
|
|
5848 There is no real rethrow in the Vim script language, but you may throw
|
|
|
5849 "v:exception" instead: >
|
|
|
5850
|
|
|
5851 :function! Bar()
|
|
|
5852 : try
|
|
|
5853 : call Foo()
|
|
|
5854 : catch /.*/
|
|
|
5855 : echo "Rethrow" v:exception
|
|
|
5856 : throw v:exception
|
|
|
5857 : endtry
|
|
|
5858 :endfunction
|
|
|
5859 < *try-echoerr*
|
|
|
5860 Note that this method cannot be used to "rethrow" Vim error or interrupt
|
|
|
5861 exceptions, because it is not possible to fake Vim internal exceptions.
|
|
|
5862 Trying so causes an error exception. You should throw your own exception
|
|
|
5863 denoting the situation. If you want to cause a Vim error exception containing
|
|
|
5864 the original error exception value, you can use the |:echoerr| command: >
|
|
|
5865
|
|
|
5866 :try
|
|
|
5867 : try
|
|
|
5868 : asdf
|
|
|
5869 : catch /.*/
|
|
|
5870 : echoerr v:exception
|
|
|
5871 : endtry
|
|
|
5872 :catch /.*/
|
|
|
5873 : echo v:exception
|
|
|
5874 :endtry
|
|
|
5875
|
|
|
5876 This code displays
|
|
|
5877
|
|
|
5878 Vim(echoerr):Vim:E492: Not an editor command: asdf ~
|
|
|
5879
|
|
|
5880
|
|
|
5881 CLEANUP CODE *try-finally*
|
|
|
5882
|
|
|
5883 Scripts often change global settings and restore them at their end. If the
|
|
|
5884 user however interrupts the script by pressing CTRL-C, the settings remain in
|
|
|
5885 an inconsistent state. The same may happen to you in the development phase of
|
|
|
5886 a script when an error occurs or you explicitly throw an exception without
|
|
|
5887 catching it. You can solve these problems by using a try conditional with
|
|
|
5888 a finally clause for restoring the settings. Its execution is guaranteed on
|
|
|
5889 normal control flow, on error, on an explicit ":throw", and on interrupt.
|
|
|
5890 (Note that errors and interrupts from inside the try conditional are converted
|
|
|
5891 to exceptions. When not caught, they terminate the script after the finally
|
|
|
5892 clause has been executed.)
|
|
|
5893 Example: >
|
|
|
5894
|
|
|
5895 :try
|
|
|
5896 : let s:saved_ts = &ts
|
|
|
5897 : set ts=17
|
|
|
5898 :
|
|
|
5899 : " Do the hard work here.
|
|
|
5900 :
|
|
|
5901 :finally
|
|
|
5902 : let &ts = s:saved_ts
|
|
|
5903 : unlet s:saved_ts
|
|
|
5904 :endtry
|
|
|
5905
|
|
|
5906 This method should be used locally whenever a function or part of a script
|
|
|
5907 changes global settings which need to be restored on failure or normal exit of
|
|
|
5908 that function or script part.
|
|
|
5909
|
|
|
5910 *break-finally*
|
|
|
5911 Cleanup code works also when the try block or a catch clause is left by
|
|
|
5912 a ":continue", ":break", ":return", or ":finish".
|
|
|
5913 Example: >
|
|
|
5914
|
|
|
5915 :let first = 1
|
|
|
5916 :while 1
|
|
|
5917 : try
|
|
|
5918 : if first
|
|
|
5919 : echo "first"
|
|
|
5920 : let first = 0
|
|
|
5921 : continue
|
|
|
5922 : else
|
|
|
5923 : throw "second"
|
|
|
5924 : endif
|
|
|
5925 : catch /.*/
|
|
|
5926 : echo v:exception
|
|
|
5927 : break
|
|
|
5928 : finally
|
|
|
5929 : echo "cleanup"
|
|
|
5930 : endtry
|
|
|
5931 : echo "still in while"
|
|
|
5932 :endwhile
|
|
|
5933 :echo "end"
|
|
|
5934
|
|
|
5935 This displays "first", "cleanup", "second", "cleanup", and "end". >
|
|
|
5936
|
|
|
5937 :function! Foo()
|
|
|
5938 : try
|
|
|
5939 : return 4711
|
|
|
5940 : finally
|
|
|
5941 : echo "cleanup\n"
|
|
|
5942 : endtry
|
|
|
5943 : echo "Foo still active"
|
|
|
5944 :endfunction
|
|
|
5945 :
|
|
|
5946 :echo Foo() "returned by Foo"
|
|
|
5947
|
|
|
5948 This displays "cleanup" and "4711 returned by Foo". You don't need to add an
|
|
|
5949 extra ":return" in the finally clause. (Above all, this would override the
|
|
|
5950 return value.)
|
|
|
5951
|
|
|
5952 *except-from-finally*
|
|
|
5953 Using either of ":continue", ":break", ":return", ":finish", or ":throw" in
|
|
|
5954 a finally clause is possible, but not recommended since it abandons the
|
|
|
5955 cleanup actions for the try conditional. But, of course, interrupt and error
|
|
|
5956 exceptions might get raised from a finally clause.
|
|
|
5957 Example where an error in the finally clause stops an interrupt from
|
|
|
5958 working correctly: >
|
|
|
5959
|
|
|
5960 :try
|
|
|
5961 : try
|
|
|
5962 : echo "Press CTRL-C for interrupt"
|
|
|
5963 : while 1
|
|
|
5964 : endwhile
|
|
|
5965 : finally
|
|
|
5966 : unlet novar
|
|
|
5967 : endtry
|
|
|
5968 :catch /novar/
|
|
|
5969 :endtry
|
|
|
5970 :echo "Script still running"
|
|
|
5971 :sleep 1
|
|
|
5972
|
|
|
5973 If you need to put commands that could fail into a finally clause, you should
|
|
|
5974 think about catching or ignoring the errors in these commands, see
|
|
|
5975 |catch-errors| and |ignore-errors|.
|
|
|
5976
|
|
|
5977
|
|
|
5978 CATCHING ERRORS *catch-errors*
|
|
|
5979
|
|
|
5980 If you want to catch specific errors, you just have to put the code to be
|
|
|
5981 watched in a try block and add a catch clause for the error message. The
|
|
|
5982 presence of the try conditional causes all errors to be converted to an
|
|
|
5983 exception. No message is displayed and |v:errmsg| is not set then. To find
|
|
|
5984 the right pattern for the ":catch" command, you have to know how the format of
|
|
|
5985 the error exception is.
|
|
|
5986 Error exceptions have the following format: >
|
|
|
5987
|
|
|
5988 Vim({cmdname}):{errmsg}
|
|
|
5989 or >
|
|
|
5990 Vim:{errmsg}
|
|
|
5991
|
|
|
5992 {cmdname} is the name of the command that failed; the second form is used when
|
|
|
5993 the command name is not known. {errmsg} is the error message usually produced
|
|
|
5994 when the error occurs outside try conditionals. It always begins with
|
|
|
5995 a capital "E", followed by a two or three-digit error number, a colon, and
|
|
|
5996 a space.
|
|
|
5997
|
|
|
5998 Examples:
|
|
|
5999
|
|
|
6000 The command >
|
|
|
6001 :unlet novar
|
|
|
6002 normally produces the error message >
|
|
|
6003 E108: No such variable: "novar"
|
|
|
6004 which is converted inside try conditionals to an exception >
|
|
|
6005 Vim(unlet):E108: No such variable: "novar"
|
|
|
6006
|
|
|
6007 The command >
|
|
|
6008 :dwim
|
|
|
6009 normally produces the error message >
|
|
|
6010 E492: Not an editor command: dwim
|
|
|
6011 which is converted inside try conditionals to an exception >
|
|
|
6012 Vim:E492: Not an editor command: dwim
|
|
|
6013
|
|
|
6014 You can catch all ":unlet" errors by a >
|
|
|
6015 :catch /^Vim(unlet):/
|
|
|
6016 or all errors for misspelled command names by a >
|
|
|
6017 :catch /^Vim:E492:/
|
|
|
6018
|
|
|
6019 Some error messages may be produced by different commands: >
|
|
|
6020 :function nofunc
|
|
|
6021 and >
|
|
|
6022 :delfunction nofunc
|
|
|
6023 both produce the error message >
|
|
|
6024 E128: Function name must start with a capital: nofunc
|
|
|
6025 which is converted inside try conditionals to an exception >
|
|
|
6026 Vim(function):E128: Function name must start with a capital: nofunc
|
|
|
6027 or >
|
|
|
6028 Vim(delfunction):E128: Function name must start with a capital: nofunc
|
|
|
6029 respectively. You can catch the error by its number independently on the
|
|
|
6030 command that caused it if you use the following pattern: >
|
|
|
6031 :catch /^Vim(\a\+):E128:/
|
|
|
6032
|
|
|
6033 Some commands like >
|
|
|
6034 :let x = novar
|
|
|
6035 produce multiple error messages, here: >
|
|
|
6036 E121: Undefined variable: novar
|
|
|
6037 E15: Invalid expression: novar
|
|
|
6038 Only the first is used for the exception value, since it is the most specific
|
|
|
6039 one (see |except-several-errors|). So you can catch it by >
|
|
|
6040 :catch /^Vim(\a\+):E121:/
|
|
|
6041
|
|
|
6042 You can catch all errors related to the name "nofunc" by >
|
|
|
6043 :catch /\<nofunc\>/
|
|
|
6044
|
|
|
6045 You can catch all Vim errors in the ":write" and ":read" commands by >
|
|
|
6046 :catch /^Vim(\(write\|read\)):E\d\+:/
|
|
|
6047
|
|
|
6048 You can catch all Vim errors by the pattern >
|
|
|
6049 :catch /^Vim\((\a\+)\)\=:E\d\+:/
|
|
|
6050 <
|
|
|
6051 *catch-text*
|
|
|
6052 NOTE: You should never catch the error message text itself: >
|
|
|
6053 :catch /No such variable/
|
|
|
6054 only works in the english locale, but not when the user has selected
|
|
|
6055 a different language by the |:language| command. It is however helpful to
|
|
|
6056 cite the message text in a comment: >
|
|
|
6057 :catch /^Vim(\a\+):E108:/ " No such variable
|
|
|
6058
|
|
|
6059
|
|
|
6060 IGNORING ERRORS *ignore-errors*
|
|
|
6061
|
|
|
6062 You can ignore errors in a specific Vim command by catching them locally: >
|
|
|
6063
|
|
|
6064 :try
|
|
|
6065 : write
|
|
|
6066 :catch
|
|
|
6067 :endtry
|
|
|
6068
|
|
|
6069 But you are strongly recommended NOT to use this simple form, since it could
|
|
|
6070 catch more than you want. With the ":write" command, some autocommands could
|
|
|
6071 be executed and cause errors not related to writing, for instance: >
|
|
|
6072
|
|
|
6073 :au BufWritePre * unlet novar
|
|
|
6074
|
|
|
6075 There could even be such errors you are not responsible for as a script
|
|
|
6076 writer: a user of your script might have defined such autocommands. You would
|
|
|
6077 then hide the error from the user.
|
|
|
6078 It is much better to use >
|
|
|
6079
|
|
|
6080 :try
|
|
|
6081 : write
|
|
|
6082 :catch /^Vim(write):/
|
|
|
6083 :endtry
|
|
|
6084
|
|
|
6085 which only catches real write errors. So catch only what you'd like to ignore
|
|
|
6086 intentionally.
|
|
|
6087
|
|
|
6088 For a single command that does not cause execution of autocommands, you could
|
|
|
6089 even suppress the conversion of errors to exceptions by the ":silent!"
|
|
|
6090 command: >
|
|
|
6091 :silent! nunmap k
|
|
|
6092 This works also when a try conditional is active.
|
|
|
6093
|
|
|
6094
|
|
|
6095 CATCHING INTERRUPTS *catch-interrupt*
|
|
|
6096
|
|
|
6097 When there are active try conditionals, an interrupt (CTRL-C) is converted to
|
|
|
6098 the exception "Vim:Interrupt". You can catch it like every exception. The
|
|
|
6099 script is not terminated, then.
|
|
|
6100 Example: >
|
|
|
6101
|
|
|
6102 :function! TASK1()
|
|
|
6103 : sleep 10
|
|
|
6104 :endfunction
|
|
|
6105
|
|
|
6106 :function! TASK2()
|
|
|
6107 : sleep 20
|
|
|
6108 :endfunction
|
|
|
6109
|
|
|
6110 :while 1
|
|
|
6111 : let command = input("Type a command: ")
|
|
|
6112 : try
|
|
|
6113 : if command == ""
|
|
|
6114 : continue
|
|
|
6115 : elseif command == "END"
|
|
|
6116 : break
|
|
|
6117 : elseif command == "TASK1"
|
|
|
6118 : call TASK1()
|
|
|
6119 : elseif command == "TASK2"
|
|
|
6120 : call TASK2()
|
|
|
6121 : else
|
|
|
6122 : echo "\nIllegal command:" command
|
|
|
6123 : continue
|
|
|
6124 : endif
|
|
|
6125 : catch /^Vim:Interrupt$/
|
|
|
6126 : echo "\nCommand interrupted"
|
|
|
6127 : " Caught the interrupt. Continue with next prompt.
|
|
|
6128 : endtry
|
|
|
6129 :endwhile
|
|
|
6130
|
|
|
6131 You can interrupt a task here by pressing CTRL-C; the script then asks for
|
|
|
6132 a new command. If you press CTRL-C at the prompt, the script is terminated.
|
|
|
6133
|
|
|
6134 For testing what happens when CTRL-C would be pressed on a specific line in
|
|
|
6135 your script, use the debug mode and execute the |>quit| or |>interrupt|
|
|
|
6136 command on that line. See |debug-scripts|.
|
|
|
6137
|
|
|
6138
|
|
|
6139 CATCHING ALL *catch-all*
|
|
|
6140
|
|
|
6141 The commands >
|
|
|
6142
|
|
|
6143 :catch /.*/
|
|
|
6144 :catch //
|
|
|
6145 :catch
|
|
|
6146
|
|
|
6147 catch everything, error exceptions, interrupt exceptions and exceptions
|
|
|
6148 explicitly thrown by the |:throw| command. This is useful at the top level of
|
|
|
6149 a script in order to catch unexpected things.
|
|
|
6150 Example: >
|
|
|
6151
|
|
|
6152 :try
|
|
|
6153 :
|
|
|
6154 : " do the hard work here
|
|
|
6155 :
|
|
|
6156 :catch /MyException/
|
|
|
6157 :
|
|
|
6158 : " handle known problem
|
|
|
6159 :
|
|
|
6160 :catch /^Vim:Interrupt$/
|
|
|
6161 : echo "Script interrupted"
|
|
|
6162 :catch /.*/
|
|
|
6163 : echo "Internal error (" . v:exception . ")"
|
|
|
6164 : echo " - occurred at " . v:throwpoint
|
|
|
6165 :endtry
|
|
|
6166 :" end of script
|
|
|
6167
|
|
|
6168 Note: Catching all might catch more things than you want. Thus, you are
|
|
|
6169 strongly encouraged to catch only for problems that you can really handle by
|
|
|
6170 specifying a pattern argument to the ":catch".
|
|
|
6171 Example: Catching all could make it nearly impossible to interrupt a script
|
|
|
6172 by pressing CTRL-C: >
|
|
|
6173
|
|
|
6174 :while 1
|
|
|
6175 : try
|
|
|
6176 : sleep 1
|
|
|
6177 : catch
|
|
|
6178 : endtry
|
|
|
6179 :endwhile
|
|
|
6180
|
|
|
6181
|
|
|
6182 EXCEPTIONS AND AUTOCOMMANDS *except-autocmd*
|
|
|
6183
|
|
|
6184 Exceptions may be used during execution of autocommands. Example: >
|
|
|
6185
|
|
|
6186 :autocmd User x try
|
|
|
6187 :autocmd User x throw "Oops!"
|
|
|
6188 :autocmd User x catch
|
|
|
6189 :autocmd User x echo v:exception
|
|
|
6190 :autocmd User x endtry
|
|
|
6191 :autocmd User x throw "Arrgh!"
|
|
|
6192 :autocmd User x echo "Should not be displayed"
|
|
|
6193 :
|
|
|
6194 :try
|
|
|
6195 : doautocmd User x
|
|
|
6196 :catch
|
|
|
6197 : echo v:exception
|
|
|
6198 :endtry
|
|
|
6199
|
|
|
6200 This displays "Oops!" and "Arrgh!".
|
|
|
6201
|
|
|
6202 *except-autocmd-Pre*
|
|
|
6203 For some commands, autocommands get executed before the main action of the
|
|
|
6204 command takes place. If an exception is thrown and not caught in the sequence
|
|
|
6205 of autocommands, the sequence and the command that caused its execution are
|
|
|
6206 abandoned and the exception is propagated to the caller of the command.
|
|
|
6207 Example: >
|
|
|
6208
|
|
|
6209 :autocmd BufWritePre * throw "FAIL"
|
|
|
6210 :autocmd BufWritePre * echo "Should not be displayed"
|
|
|
6211 :
|
|
|
6212 :try
|
|
|
6213 : write
|
|
|
6214 :catch
|
|
|
6215 : echo "Caught:" v:exception "from" v:throwpoint
|
|
|
6216 :endtry
|
|
|
6217
|
|
|
6218 Here, the ":write" command does not write the file currently being edited (as
|
|
|
6219 you can see by checking 'modified'), since the exception from the BufWritePre
|
|
|
6220 autocommand abandons the ":write". The exception is then caught and the
|
|
|
6221 script displays: >
|
|
|
6222
|
|
|
6223 Caught: FAIL from BufWrite Auto commands for "*"
|
|
|
6224 <
|
|
|
6225 *except-autocmd-Post*
|
|
|
6226 For some commands, autocommands get executed after the main action of the
|
|
|
6227 command has taken place. If this main action fails and the command is inside
|
|
|
6228 an active try conditional, the autocommands are skipped and an error exception
|
|
|
6229 is thrown that can be caught by the caller of the command.
|
|
|
6230 Example: >
|
|
|
6231
|
|
|
6232 :autocmd BufWritePost * echo "File successfully written!"
|
|
|
6233 :
|
|
|
6234 :try
|
|
|
6235 : write /i/m/p/o/s/s/i/b/l/e
|
|
|
6236 :catch
|
|
|
6237 : echo v:exception
|
|
|
6238 :endtry
|
|
|
6239
|
|
|
6240 This just displays: >
|
|
|
6241
|
|
|
6242 Vim(write):E212: Can't open file for writing (/i/m/p/o/s/s/i/b/l/e)
|
|
|
6243
|
|
|
6244 If you really need to execute the autocommands even when the main action
|
|
|
6245 fails, trigger the event from the catch clause.
|
|
|
6246 Example: >
|
|
|
6247
|
|
|
6248 :autocmd BufWritePre * set noreadonly
|
|
|
6249 :autocmd BufWritePost * set readonly
|
|
|
6250 :
|
|
|
6251 :try
|
|
|
6252 : write /i/m/p/o/s/s/i/b/l/e
|
|
|
6253 :catch
|
|
|
6254 : doautocmd BufWritePost /i/m/p/o/s/s/i/b/l/e
|
|
|
6255 :endtry
|
|
|
6256 <
|
|
|
6257 You can also use ":silent!": >
|
|
|
6258
|
|
|
6259 :let x = "ok"
|
|
|
6260 :let v:errmsg = ""
|
|
|
6261 :autocmd BufWritePost * if v:errmsg != ""
|
|
|
6262 :autocmd BufWritePost * let x = "after fail"
|
|
|
6263 :autocmd BufWritePost * endif
|
|
|
6264 :try
|
|
|
6265 : silent! write /i/m/p/o/s/s/i/b/l/e
|
|
|
6266 :catch
|
|
|
6267 :endtry
|
|
|
6268 :echo x
|
|
|
6269
|
|
|
6270 This displays "after fail".
|
|
|
6271
|
|
|
6272 If the main action of the command does not fail, exceptions from the
|
|
|
6273 autocommands will be catchable by the caller of the command: >
|
|
|
6274
|
|
|
6275 :autocmd BufWritePost * throw ":-("
|
|
|
6276 :autocmd BufWritePost * echo "Should not be displayed"
|
|
|
6277 :
|
|
|
6278 :try
|
|
|
6279 : write
|
|
|
6280 :catch
|
|
|
6281 : echo v:exception
|
|
|
6282 :endtry
|
|
|
6283 <
|
|
|
6284 *except-autocmd-Cmd*
|
|
|
6285 For some commands, the normal action can be replaced by a sequence of
|
|
|
6286 autocommands. Exceptions from that sequence will be catchable by the caller
|
|
|
6287 of the command.
|
|
|
6288 Example: For the ":write" command, the caller cannot know whether the file
|
|
|
6289 had actually been written when the exception occurred. You need to tell it in
|
|
|
6290 some way. >
|
|
|
6291
|
|
|
6292 :if !exists("cnt")
|
|
|
6293 : let cnt = 0
|
|
|
6294 :
|
|
|
6295 : autocmd BufWriteCmd * if &modified
|
|
|
6296 : autocmd BufWriteCmd * let cnt = cnt + 1
|
|
|
6297 : autocmd BufWriteCmd * if cnt % 3 == 2
|
|
|
6298 : autocmd BufWriteCmd * throw "BufWriteCmdError"
|
|
|
6299 : autocmd BufWriteCmd * endif
|
|
|
6300 : autocmd BufWriteCmd * write | set nomodified
|
|
|
6301 : autocmd BufWriteCmd * if cnt % 3 == 0
|
|
|
6302 : autocmd BufWriteCmd * throw "BufWriteCmdError"
|
|
|
6303 : autocmd BufWriteCmd * endif
|
|
|
6304 : autocmd BufWriteCmd * echo "File successfully written!"
|
|
|
6305 : autocmd BufWriteCmd * endif
|
|
|
6306 :endif
|
|
|
6307 :
|
|
|
6308 :try
|
|
|
6309 : write
|
|
|
6310 :catch /^BufWriteCmdError$/
|
|
|
6311 : if &modified
|
|
|
6312 : echo "Error on writing (file contents not changed)"
|
|
|
6313 : else
|
|
|
6314 : echo "Error after writing"
|
|
|
6315 : endif
|
|
|
6316 :catch /^Vim(write):/
|
|
|
6317 : echo "Error on writing"
|
|
|
6318 :endtry
|
|
|
6319
|
|
|
6320 When this script is sourced several times after making changes, it displays
|
|
|
6321 first >
|
|
|
6322 File successfully written!
|
|
|
6323 then >
|
|
|
6324 Error on writing (file contents not changed)
|
|
|
6325 then >
|
|
|
6326 Error after writing
|
|
|
6327 etc.
|
|
|
6328
|
|
|
6329 *except-autocmd-ill*
|
|
|
6330 You cannot spread a try conditional over autocommands for different events.
|
|
|
6331 The following code is ill-formed: >
|
|
|
6332
|
|
|
6333 :autocmd BufWritePre * try
|
|
|
6334 :
|
|
|
6335 :autocmd BufWritePost * catch
|
|
|
6336 :autocmd BufWritePost * echo v:exception
|
|
|
6337 :autocmd BufWritePost * endtry
|
|
|
6338 :
|
|
|
6339 :write
|
|
|
6340
|
|
|
6341
|
|
|
6342 EXCEPTION HIERARCHIES AND PARAMETERIZED EXCEPTIONS *except-hier-param*
|
|
|
6343
|
|
|
6344 Some programming languages allow to use hierarchies of exception classes or to
|
|
|
6345 pass additional information with the object of an exception class. You can do
|
|
|
6346 similar things in Vim.
|
|
|
6347 In order to throw an exception from a hierarchy, just throw the complete
|
|
|
6348 class name with the components separated by a colon, for instance throw the
|
|
|
6349 string "EXCEPT:MATHERR:OVERFLOW" for an overflow in a mathematical library.
|
|
|
6350 When you want to pass additional information with your exception class, add
|
|
|
6351 it in parentheses, for instance throw the string "EXCEPT:IO:WRITEERR(myfile)"
|
|
|
6352 for an error when writing "myfile".
|
|
|
6353 With the appropriate patterns in the ":catch" command, you can catch for
|
|
|
6354 base classes or derived classes of your hierarchy. Additional information in
|
|
|
6355 parentheses can be cut out from |v:exception| with the ":substitute" command.
|
|
|
6356 Example: >
|
|
|
6357
|
|
|
6358 :function! CheckRange(a, func)
|
|
|
6359 : if a:a < 0
|
|
|
6360 : throw "EXCEPT:MATHERR:RANGE(" . a:func . ")"
|
|
|
6361 : endif
|
|
|
6362 :endfunction
|
|
|
6363 :
|
|
|
6364 :function! Add(a, b)
|
|
|
6365 : call CheckRange(a:a, "Add")
|
|
|
6366 : call CheckRange(a:b, "Add")
|
|
|
6367 : let c = a:a + a:b
|
|
|
6368 : if c < 0
|
|
|
6369 : throw "EXCEPT:MATHERR:OVERFLOW"
|
|
|
6370 : endif
|
|
|
6371 : return c
|
|
|
6372 :endfunction
|
|
|
6373 :
|
|
|
6374 :function! Div(a, b)
|
|
|
6375 : call CheckRange(a:a, "Div")
|
|
|
6376 : call CheckRange(a:b, "Div")
|
|
|
6377 : if (a:b == 0)
|
|
|
6378 : throw "EXCEPT:MATHERR:ZERODIV"
|
|
|
6379 : endif
|
|
|
6380 : return a:a / a:b
|
|
|
6381 :endfunction
|
|
|
6382 :
|
|
|
6383 :function! Write(file)
|
|
|
6384 : try
|
|
|
6385 : execute "write" a:file
|
|
|
6386 : catch /^Vim(write):/
|
|
|
6387 : throw "EXCEPT:IO(" . getcwd() . ", " . a:file . "):WRITEERR"
|
|
|
6388 : endtry
|
|
|
6389 :endfunction
|
|
|
6390 :
|
|
|
6391 :try
|
|
|
6392 :
|
|
|
6393 : " something with arithmetics and I/O
|
|
|
6394 :
|
|
|
6395 :catch /^EXCEPT:MATHERR:RANGE/
|
|
|
6396 : let function = substitute(v:exception, '.*(\(\a\+\)).*', '\1', "")
|
|
|
6397 : echo "Range error in" function
|
|
|
6398 :
|
|
|
6399 :catch /^EXCEPT:MATHERR/ " catches OVERFLOW and ZERODIV
|
|
|
6400 : echo "Math error"
|
|
|
6401 :
|
|
|
6402 :catch /^EXCEPT:IO/
|
|
|
6403 : let dir = substitute(v:exception, '.*(\(.\+\),\s*.\+).*', '\1', "")
|
|
|
6404 : let file = substitute(v:exception, '.*(.\+,\s*\(.\+\)).*', '\1', "")
|
|
|
6405 : if file !~ '^/'
|
|
|
6406 : let file = dir . "/" . file
|
|
|
6407 : endif
|
|
|
6408 : echo 'I/O error for "' . file . '"'
|
|
|
6409 :
|
|
|
6410 :catch /^EXCEPT/
|
|
|
6411 : echo "Unspecified error"
|
|
|
6412 :
|
|
|
6413 :endtry
|
|
|
6414
|
|
|
6415 The exceptions raised by Vim itself (on error or when pressing CTRL-C) use
|
|
|
6416 a flat hierarchy: they are all in the "Vim" class. You cannot throw yourself
|
|
|
6417 exceptions with the "Vim" prefix; they are reserved for Vim.
|
|
|
6418 Vim error exceptions are parameterized with the name of the command that
|
|
|
6419 failed, if known. See |catch-errors|.
|
|
|
6420
|
|
|
6421
|
|
|
6422 PECULIARITIES
|
|
|
6423 *except-compat*
|
|
|
6424 The exception handling concept requires that the command sequence causing the
|
|
|
6425 exception is aborted immediately and control is transferred to finally clauses
|
|
|
6426 and/or a catch clause.
|
|
|
6427
|
|
|
6428 In the Vim script language there are cases where scripts and functions
|
|
|
6429 continue after an error: in functions without the "abort" flag or in a command
|
|
|
6430 after ":silent!", control flow goes to the following line, and outside
|
|
|
6431 functions, control flow goes to the line following the outermost ":endwhile"
|
|
|
6432 or ":endif". On the other hand, errors should be catchable as exceptions
|
|
|
6433 (thus, requiring the immediate abortion).
|
|
|
6434
|
|
|
6435 This problem has been solved by converting errors to exceptions and using
|
|
|
6436 immediate abortion (if not suppressed by ":silent!") only when a try
|
|
|
6437 conditional is active. This is no restriction since an (error) exception can
|
|
|
6438 be caught only from an active try conditional. If you want an immediate
|
|
|
6439 termination without catching the error, just use a try conditional without
|
|
|
6440 catch clause. (You can cause cleanup code being executed before termination
|
|
|
6441 by specifying a finally clause.)
|
|
|
6442
|
|
|
6443 When no try conditional is active, the usual abortion and continuation
|
|
|
6444 behavior is used instead of immediate abortion. This ensures compatibility of
|
|
|
6445 scripts written for Vim 6.1 and earlier.
|
|
|
6446
|
|
|
6447 However, when sourcing an existing script that does not use exception handling
|
|
|
6448 commands (or when calling one of its functions) from inside an active try
|
|
|
6449 conditional of a new script, you might change the control flow of the existing
|
|
|
6450 script on error. You get the immediate abortion on error and can catch the
|
|
|
6451 error in the new script. If however the sourced script suppresses error
|
|
|
6452 messages by using the ":silent!" command (checking for errors by testing
|
|
|
6453 |v:errmsg| if appropriate), its execution path is not changed. The error is
|
|
|
6454 not converted to an exception. (See |:silent|.) So the only remaining cause
|
|
|
6455 where this happens is for scripts that don't care about errors and produce
|
|
|
6456 error messages. You probably won't want to use such code from your new
|
|
|
6457 scripts.
|
|
|
6458
|
|
|
6459 *except-syntax-err*
|
|
|
6460 Syntax errors in the exception handling commands are never caught by any of
|
|
|
6461 the ":catch" commands of the try conditional they belong to. Its finally
|
|
|
6462 clauses, however, is executed.
|
|
|
6463 Example: >
|
|
|
6464
|
|
|
6465 :try
|
|
|
6466 : try
|
|
|
6467 : throw 4711
|
|
|
6468 : catch /\(/
|
|
|
6469 : echo "in catch with syntax error"
|
|
|
6470 : catch
|
|
|
6471 : echo "inner catch-all"
|
|
|
6472 : finally
|
|
|
6473 : echo "inner finally"
|
|
|
6474 : endtry
|
|
|
6475 :catch
|
|
|
6476 : echo 'outer catch-all caught "' . v:exception . '"'
|
|
|
6477 : finally
|
|
|
6478 : echo "outer finally"
|
|
|
6479 :endtry
|
|
|
6480
|
|
|
6481 This displays: >
|
|
|
6482 inner finally
|
|
|
6483 outer catch-all caught "Vim(catch):E54: Unmatched \("
|
|
|
6484 outer finally
|
|
|
6485 The original exception is discarded and an error exception is raised, instead.
|
|
|
6486
|
|
|
6487 *except-single-line*
|
|
|
6488 The ":try", ":catch", ":finally", and ":endtry" commands can be put on
|
|
|
6489 a single line, but then syntax errors may make it difficult to recognize the
|
|
|
6490 "catch" line, thus you better avoid this.
|
|
|
6491 Example: >
|
|
|
6492 :try | unlet! foo # | catch | endtry
|
|
|
6493 raises an error exception for the trailing characters after the ":unlet!"
|
|
|
6494 argument, but does not see the ":catch" and ":endtry" commands, so that the
|
|
|
6495 error exception is discarded and the "E488: Trailing characters" message gets
|
|
|
6496 displayed.
|
|
|
6497
|
|
|
6498 *except-several-errors*
|
|
|
6499 When several errors appear in a single command, the first error message is
|
|
|
6500 usually the most specific one and therefor converted to the error exception.
|
|
|
6501 Example: >
|
|
|
6502 echo novar
|
|
|
6503 causes >
|
|
|
6504 E121: Undefined variable: novar
|
|
|
6505 E15: Invalid expression: novar
|
|
|
6506 The value of the error exception inside try conditionals is: >
|
|
|
6507 Vim(echo):E121: Undefined variable: novar
|
|
|
6508 < *except-syntax-error*
|
|
|
6509 But when a syntax error is detected after a normal error in the same command,
|
|
|
6510 the syntax error is used for the exception being thrown.
|
|
|
6511 Example: >
|
|
|
6512 unlet novar #
|
|
|
6513 causes >
|
|
|
6514 E108: No such variable: "novar"
|
|
|
6515 E488: Trailing characters
|
|
|
6516 The value of the error exception inside try conditionals is: >
|
|
|
6517 Vim(unlet):E488: Trailing characters
|
|
|
6518 This is done because the syntax error might change the execution path in a way
|
|
|
6519 not intended by the user. Example: >
|
|
|
6520 try
|
|
|
6521 try | unlet novar # | catch | echo v:exception | endtry
|
|
|
6522 catch /.*/
|
|
|
6523 echo "outer catch:" v:exception
|
|
|
6524 endtry
|
|
|
6525 This displays "outer catch: Vim(unlet):E488: Trailing characters", and then
|
|
|
6526 a "E600: Missing :endtry" error message is given, see |except-single-line|.
|
|
|
6527
|
|
|
6528 ==============================================================================
|
|
|
6529 9. Examples *eval-examples*
|
|
|
6530
|
|
|
6531 Printing in Hex ~
|
|
|
6532 >
|
|
|
6533 :" The function Nr2Hex() returns the Hex string of a number.
|
|
|
6534 :func Nr2Hex(nr)
|
|
|
6535 : let n = a:nr
|
|
|
6536 : let r = ""
|
|
|
6537 : while n
|
|
|
6538 : let r = '0123456789ABCDEF'[n % 16] . r
|
|
|
6539 : let n = n / 16
|
|
|
6540 : endwhile
|
|
|
6541 : return r
|
|
|
6542 :endfunc
|
|
|
6543
|
|
|
6544 :" The function String2Hex() converts each character in a string to a two
|
|
|
6545 :" character Hex string.
|
|
|
6546 :func String2Hex(str)
|
|
|
6547 : let out = ''
|
|
|
6548 : let ix = 0
|
|
|
6549 : while ix < strlen(a:str)
|
|
|
6550 : let out = out . Nr2Hex(char2nr(a:str[ix]))
|
|
|
6551 : let ix = ix + 1
|
|
|
6552 : endwhile
|
|
|
6553 : return out
|
|
|
6554 :endfunc
|
|
|
6555
|
|
|
6556 Example of its use: >
|
|
|
6557 :echo Nr2Hex(32)
|
|
|
6558 result: "20" >
|
|
|
6559 :echo String2Hex("32")
|
|
|
6560 result: "3332"
|
|
|
6561
|
|
|
6562
|
|
|
6563 Sorting lines (by Robert Webb) ~
|
|
|
6564
|
|
|
6565 Here is a Vim script to sort lines. Highlight the lines in Vim and type
|
|
|
6566 ":Sort". This doesn't call any external programs so it'll work on any
|
|
|
6567 platform. The function Sort() actually takes the name of a comparison
|
|
|
6568 function as its argument, like qsort() does in C. So you could supply it
|
|
|
6569 with different comparison functions in order to sort according to date etc.
|
|
|
6570 >
|
|
|
6571 :" Function for use with Sort(), to compare two strings.
|
|
|
6572 :func! Strcmp(str1, str2)
|
|
|
6573 : if (a:str1 < a:str2)
|
|
|
6574 : return -1
|
|
|
6575 : elseif (a:str1 > a:str2)
|
|
|
6576 : return 1
|
|
|
6577 : else
|
|
|
6578 : return 0
|
|
|
6579 : endif
|
|
|
6580 :endfunction
|
|
|
6581
|
|
|
6582 :" Sort lines. SortR() is called recursively.
|
|
|
6583 :func! SortR(start, end, cmp)
|
|
|
6584 : if (a:start >= a:end)
|
|
|
6585 : return
|
|
|
6586 : endif
|
|
|
6587 : let partition = a:start - 1
|
|
|
6588 : let middle = partition
|
|
|
6589 : let partStr = getline((a:start + a:end) / 2)
|
|
|
6590 : let i = a:start
|
|
|
6591 : while (i <= a:end)
|
|
|
6592 : let str = getline(i)
|
|
|
6593 : exec "let result = " . a:cmp . "(str, partStr)"
|
|
|
6594 : if (result <= 0)
|
|
|
6595 : " Need to put it before the partition. Swap lines i and partition.
|
|
|
6596 : let partition = partition + 1
|
|
|
6597 : if (result == 0)
|
|
|
6598 : let middle = partition
|
|
|
6599 : endif
|
|
|
6600 : if (i != partition)
|
|
|
6601 : let str2 = getline(partition)
|
|
|
6602 : call setline(i, str2)
|
|
|
6603 : call setline(partition, str)
|
|
|
6604 : endif
|
|
|
6605 : endif
|
|
|
6606 : let i = i + 1
|
|
|
6607 : endwhile
|
|
|
6608
|
|
|
6609 : " Now we have a pointer to the "middle" element, as far as partitioning
|
|
|
6610 : " goes, which could be anywhere before the partition. Make sure it is at
|
|
|
6611 : " the end of the partition.
|
|
|
6612 : if (middle != partition)
|
|
|
6613 : let str = getline(middle)
|
|
|
6614 : let str2 = getline(partition)
|
|
|
6615 : call setline(middle, str2)
|
|
|
6616 : call setline(partition, str)
|
|
|
6617 : endif
|
|
|
6618 : call SortR(a:start, partition - 1, a:cmp)
|
|
|
6619 : call SortR(partition + 1, a:end, a:cmp)
|
|
|
6620 :endfunc
|
|
|
6621
|
|
|
6622 :" To Sort a range of lines, pass the range to Sort() along with the name of a
|
|
|
6623 :" function that will compare two lines.
|
|
|
6624 :func! Sort(cmp) range
|
|
|
6625 : call SortR(a:firstline, a:lastline, a:cmp)
|
|
|
6626 :endfunc
|
|
|
6627
|
|
|
6628 :" :Sort takes a range of lines and sorts them.
|
|
|
6629 :command! -nargs=0 -range Sort <line1>,<line2>call Sort("Strcmp")
|
|
|
6630 <
|
|
|
6631 *sscanf*
|
|
|
6632 There is no sscanf() function in Vim. If you need to extract parts from a
|
|
|
6633 line, you can use matchstr() and substitute() to do it. This example shows
|
|
|
6634 how to get the file name, line number and column number out of a line like
|
|
|
6635 "foobar.txt, 123, 45". >
|
|
|
6636 :" Set up the match bit
|
|
|
6637 :let mx='\(\f\+\),\s*\(\d\+\),\s*\(\d\+\)'
|
|
|
6638 :"get the part matching the whole expression
|
|
|
6639 :let l = matchstr(line, mx)
|
|
|
6640 :"get each item out of the match
|
|
|
6641 :let file = substitute(l, mx, '\1', '')
|
|
|
6642 :let lnum = substitute(l, mx, '\2', '')
|
|
|
6643 :let col = substitute(l, mx, '\3', '')
|
|
|
6644
|
|
|
6645 The input is in the variable "line", the results in the variables "file",
|
|
|
6646 "lnum" and "col". (idea from Michael Geddes)
|
|
|
6647
|
|
|
6648 ==============================================================================
|
|
|
6649 10. No +eval feature *no-eval-feature*
|
|
|
6650
|
|
|
6651 When the |+eval| feature was disabled at compile time, none of the expression
|
|
|
6652 evaluation commands are available. To prevent this from causing Vim scripts
|
|
|
6653 to generate all kinds of errors, the ":if" and ":endif" commands are still
|
|
|
6654 recognized, though the argument of the ":if" and everything between the ":if"
|
|
|
6655 and the matching ":endif" is ignored. Nesting of ":if" blocks is allowed, but
|
|
|
6656 only if the commands are at the start of the line. The ":else" command is not
|
|
|
6657 recognized.
|
|
|
6658
|
|
|
6659 Example of how to avoid executing commands when the |+eval| feature is
|
|
|
6660 missing: >
|
|
|
6661
|
|
|
6662 :if 1
|
|
|
6663 : echo "Expression evaluation is compiled in"
|
|
|
6664 :else
|
|
|
6665 : echo "You will _never_ see this message"
|
|
|
6666 :endif
|
|
|
6667
|
|
|
6668 ==============================================================================
|
|
|
6669 11. The sandbox *eval-sandbox* *sandbox* *E48*
|
|
|
6670
|
|
|
6671 The 'foldexpr', 'includeexpr', 'indentexpr', 'statusline' and 'foldtext'
|
|
|
6672 options are evaluated in a sandbox. This means that you are protected from
|
|
|
6673 these expressions having nasty side effects. This gives some safety for when
|
|
|
6674 these options are set from a modeline. It is also used when the command from
|
|
|
6675 a tags file is executed.
|
|
29
|
6676 The sandbox is also used for the |:sandbox| command.
|
|
7
|
6677
|
|
|
6678 These items are not allowed in the sandbox:
|
|
|
6679 - changing the buffer text
|
|
|
6680 - defining or changing mapping, autocommands, functions, user commands
|
|
|
6681 - setting certain options (see |option-summary|)
|
|
|
6682 - executing a shell command
|
|
|
6683 - reading or writing a file
|
|
|
6684 - jumping to another buffer or editing a file
|
|
29
|
6685 This is not guaranteed 100% secure, but it should block most attacks.
|
|
|
6686
|
|
|
6687 *:san* *:sandbox*
|
|
401
|
6688 :san[dbox] {cmd} Execute {cmd} in the sandbox. Useful to evaluate an
|
|
29
|
6689 option that may have been set from a modeline, e.g.
|
|
|
6690 'foldexpr'.
|
|
|
6691
|
|
7
|
6692
|
|
|
6693 vim:tw=78:ts=8:ft=help:norl:
|
