annotate runtime/doc/autocmd.txt @ 40:f1d2a58883b9 v7.0024

updated for version 7.0024
author vimboss
date Fri, 24 Dec 2004 14:35:23 +0000
parents 410fa1a31baf
children 8ecb0db93e9a
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1 *autocmd.txt* For Vim version 7.0aa. Last change: 2004 Dec 24
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4 VIM REFERENCE MANUAL by Bram Moolenaar
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5
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6
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7 Automatic commands *autocommand*
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8
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9 For a basic explanation, see section |40.3| in the user manual.
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10
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11 1. Introduction |autocmd-intro|
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12 2. Defining autocommands |autocmd-define|
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13 3. Removing autocommands |autocmd-remove|
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14 4. Listing autocommands |autocmd-list|
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15 5. Events |autocmd-events|
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16 6. Patterns |autocmd-patterns|
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17 7. Buffer-local autocommands |autocmd-buflocal|
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18 8. Groups |autocmd-groups|
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19 9. Executing autocommands |autocmd-execute|
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20 10. Using autocommands |autocmd-use|
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21
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22 {Vi does not have any of these commands}
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23 {only when the |+autocmd| feature has not been disabled at compile time}
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24
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25 ==============================================================================
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26 1. Introduction *autocmd-intro*
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27
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28 You can specify commands to be executed automatically when reading or writing
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29 a file, when entering or leaving a buffer or window, and when exiting Vim.
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30 For example, you can create an autocommand to set the 'cindent' option for
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31 files matching *.c. You can also use autocommands to implement advanced
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32 features, such as editing compressed files (see |gzip-example|). The usual
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33 place to put autocommands is in your .vimrc or .exrc file.
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34
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35 *E203* *E204* *E143*
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36 WARNING: Using autocommands is very powerful, and may lead to unexpected side
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37 effects. Be careful not to destroy your text.
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38 - It's a good idea to do some testing on an expendable copy of a file first.
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39 For example: If you use autocommands to decompress a file when starting to
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40 edit it, make sure that the autocommands for compressing when writing work
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41 correctly.
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42 - Be prepared for an error halfway through (e.g., disk full). Vim will mostly
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43 be able to undo the changes to the buffer, but you may have to clean up the
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44 changes to other files by hand (e.g., compress a file that has been
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45 decompressed).
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46 - If the BufRead* events allow you to edit a compressed file, the FileRead*
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47 events should do the same (this makes recovery possible in some rare cases).
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48 It's a good idea to use the same autocommands for the File* and Buf* events
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49 when possible.
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50
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51 ==============================================================================
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52 2. Defining autocommands *autocmd-define*
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53
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54 Note: The ":autocmd" command cannot be followed by another command, since any
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55 '|' is considered part of the command.
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56
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57 *:au* *:autocmd*
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58 :au[tocmd] [group] {event} {pat} [nested] {cmd}
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59 Add {cmd} to the list of commands that Vim will
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60 execute automatically on {event} for a file matching
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61 {pat}. Vim always adds the {cmd} after existing
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62 autocommands, so that the autocommands execute in the
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63 order in which they were given. See |autocmd-nested|
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64 for [nested].
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65
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66 The special pattern <buffer> or <buffer=N> defines a buffer-local autocommand.
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67 See |autocmd-buflocal|.
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68
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69 Note that special characters (e.g., "%", "<cword>") in the ":autocmd"
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70 arguments are not expanded when the autocommand is defined. These will be
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71 expanded when the Event is recognized, and the {cmd} is executed. The only
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72 exception is that "<sfile>" is expanded when the autocmd is defined. Example:
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73 >
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74 :au BufNewFile,BufRead *.html so <sfile>:h/html.vim
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75
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76 Here Vim expands <sfile> to the name of the file containing this line.
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77
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78 When your .vimrc file is sourced twice, the autocommands will appear twice.
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79 To avoid this, put this command in your .vimrc file, before defining
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80 autocommands: >
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81
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82 :autocmd! " Remove ALL autocommands for the current group.
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83
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84 If you don't want to remove all autocommands, you can instead use a variable
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85 to ensure that Vim includes the autocommands only once: >
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86
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87 :if !exists("autocommands_loaded")
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88 : let autocommands_loaded = 1
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89 : au ...
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90 :endif
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91
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92 When the [group] argument is not given, Vim uses the current group (as defined
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93 with ":augroup"); otherwise, Vim uses the group defined with [group]. Note
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94 that [group] must have been defined before. You cannot define a new group
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95 with ":au group ..."; use ":augroup" for that.
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96
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97 While testing autocommands, you might find the 'verbose' option to be useful: >
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98 :set verbose=9
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99 This setting makes Vim echo the autocommands as it executes them.
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100
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101 When defining an autocommand in a script, it will be able to call functions
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102 local to the script and use mappings local to the script. When the event is
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103 triggered and the command executed, it will run in the context of the script
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104 it was defined in. This matters if |<SID>| is used in a command.
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105
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106 When executing the commands, the messages from one command overwrites a
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107 previous message. This is different from when executing the commands
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108 manually. Mostly the screen will not scroll up, thus there is no hit-enter
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109 prompt. When one command outputs two messages this can happen anyway.
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110
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111 ==============================================================================
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112 3. Removing autocommands *autocmd-remove*
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113
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114 :au[tocmd]! [group] {event} {pat} [nested] {cmd}
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115 Remove all autocommands associated with {event} and
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116 {pat}, and add the command {cmd}. See
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117 |autocmd-nested| for [nested].
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118
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119 :au[tocmd]! [group] {event} {pat}
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120 Remove all autocommands associated with {event} and
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121 {pat}.
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122
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123 :au[tocmd]! [group] * {pat}
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124 Remove all autocommands associated with {pat} for all
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125 events.
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126
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127 :au[tocmd]! [group] {event}
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128 Remove ALL autocommands for {event}.
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129
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130 :au[tocmd]! [group] Remove ALL autocommands.
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131
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132 When the [group] argument is not given, Vim uses the current group (as defined
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133 with ":augroup"); otherwise, Vim uses the group defined with [group].
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134
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135 ==============================================================================
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136 4. Listing autocommands *autocmd-list*
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137
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138 :au[tocmd] [group] {event} {pat}
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139 Show the autocommands associated with {event} and
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140 {pat}.
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141
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142 :au[tocmd] [group] * {pat}
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143 Show the autocommands associated with {pat} for all
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144 events.
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145
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146 :au[tocmd] [group] {event}
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147 Show all autocommands for {event}.
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148
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149 :au[tocmd] [group] Show all autocommands.
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150
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151 If you provide the [group] argument, Vim lists only the autocommands for
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152 [group]; otherwise, Vim lists the autocommands for ALL groups. Note that this
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153 argument behavior differs from that for defining and removing autocommands.
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154
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155 In order to list buffer-local autocommands, use a pattern in the form <buffer>
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156 or <buffer=N>. See |autocmd-buflocal|.
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157
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158 ==============================================================================
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159 5. Events *autocmd-events* *E215* *E216*
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160
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161 *autocommand-events* *{event}*
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162 Vim recognizes the following events. Vim ignores the case of event names
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163 (e.g., you can use "BUFread" or "bufread" instead of "BufRead").
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164
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165 *BufNewFile*
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166 BufNewFile When starting to edit a file that doesn't
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167 exist. Can be used to read in a skeleton
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168 file.
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169 *BufReadPre* *E200* *E201*
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170 BufReadPre When starting to edit a new buffer, before
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171 reading the file into the buffer. Not used
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172 if the file doesn't exist.
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173 *BufRead* *BufReadPost*
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174 BufRead or BufReadPost When starting to edit a new buffer, after
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175 reading the file into the buffer, before
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176 executing the modelines. See |BufWinEnter|
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177 for when you need to do something after
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178 processing the modelines.
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179 This does NOT work for ":r file". Not used
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180 when the file doesn't exist. Also used after
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181 successfully recovering a file.
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182 *BufReadCmd*
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183 BufReadCmd Before starting to edit a new buffer. Should
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184 read the file into the buffer. |Cmd-event|
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185 *BufFilePre*
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186 BufFilePre Before changing the name of the current buffer
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187 with the ":file" or ":saveas" command.
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188 *BufFilePost*
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189 BufFilePost After changing the name of the current buffer
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190 with the ":file" or ":saveas" command.
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191 *FileReadPre*
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192 FileReadPre Before reading a file with a ":read" command.
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193 *FileReadPost*
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194 FileReadPost After reading a file with a ":read" command.
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195 Note that Vim sets the '[ and '] marks to the
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196 first and last line of the read. This can be
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197 used to operate on the lines just read.
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198 *FileReadCmd*
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199 FileReadCmd Before reading a file with a ":read" command.
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200 Should do the reading of the file. |Cmd-event|
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201 *FilterReadPre* *E135*
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202 FilterReadPre Before reading a file from a filter command.
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203 Vim checks the pattern against the name of
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204 the current buffer, not the name of the
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205 temporary file that is the output of the
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206 filter command.
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207 *FilterReadPost*
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208 FilterReadPost After reading a file from a filter command.
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209 Vim checks the pattern against the name of
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210 the current buffer as with FilterReadPre.
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211 *FileType*
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212 FileType When the 'filetype' option has been set.
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213 <afile> can be used for the name of the file
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214 where this option was set, and <amatch> for
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215 the new value of 'filetype'.
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216 See |filetypes|.
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217 *Syntax*
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218 Syntax When the 'syntax' option has been set.
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219 <afile> can be used for the name of the file
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220 where this option was set, and <amatch> for
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221 the new value of 'syntax'.
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222 See |:syn-on|.
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223 *StdinReadPre*
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224 StdinReadPre Before reading from stdin into the buffer.
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225 Only used when the "-" argument was used when
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226 Vim was started |--|.
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227 *StdinReadPost*
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228 StdinReadPost After reading from the stdin into the buffer,
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229 before executing the modelines. Only used
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230 when the "-" argument was used when Vim was
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231 started |--|.
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232 *BufWrite* *BufWritePre*
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233 BufWrite or BufWritePre Before writing the whole buffer to a file.
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234 *BufWritePost*
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235 BufWritePost After writing the whole buffer to a file
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236 (should undo the commands for BufWritePre).
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237 *BufWriteCmd*
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238 BufWriteCmd Before writing the whole buffer to a file.
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239 Should do the writing of the file and reset
39
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240 'modified' if successful, unless '+' is in
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241 'cpo' and writing to another file |cpo-+|.
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242 The buffer contents should not be changed.
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243 |Cmd-event|
7
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244 *FileWritePre*
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245 FileWritePre Before writing to a file, when not writing the
26
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246 whole buffer. Use the '[ and '] marks for the
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247 range of lines.
7
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248 *FileWritePost*
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249 FileWritePost After writing to a file, when not writing the
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250 whole buffer.
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251 *FileWriteCmd*
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252 FileWriteCmd Before writing to a file, when not writing the
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253 whole buffer. Should do the writing to the
26
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254 file. Should not change the buffer. Use the
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255 '[ and '] marks for the range of lines.
7
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256 |Cmd-event|
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257 *FileAppendPre*
26
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258 FileAppendPre Before appending to a file. Use the '[ and ']
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259 marks for the range of lines.
7
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260 *FileAppendPost*
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261 FileAppendPost After appending to a file.
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262 *FileAppendCmd*
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263 FileAppendCmd Before appending to a file. Should do the
26
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parents: 22
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264 appending to the file. Use the '[ and ']
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parents: 22
diff changeset
265 marks for the range of lines.|Cmd-event|
7
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266 *FilterWritePre*
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267 FilterWritePre Before writing a file for a filter command or
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vimboss
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268 making a diff.
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269 Vim checks the pattern against the name of
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270 the current buffer, not the name of the
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271 temporary file that is the output of the
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272 filter command.
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diff changeset
273 *FilterWritePost*
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274 FilterWritePost After writing a file for a filter command or
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vimboss
parents:
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275 making a diff.
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276 Vim checks the pattern against the name of
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vimboss
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277 the current buffer as with FilterWritePre.
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diff changeset
278 *FileChangedShell*
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279 FileChangedShell When Vim notices that the modification time of
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280 a file has changed since editing started.
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281 Also when the file attributes of the file
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282 change. |timestamp|
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283 Mostly triggered after executing a shell
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vimboss
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284 command, but also with a |:checktime| command
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vimboss
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285 or when Vim regains input focus.
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286 This autocommand is triggered for each changed
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287 file. It is not used when 'autoread' is set
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288 and the buffer was not changed. If a
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289 FileChangedShell autocommand is present the
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290 warning message and prompt is not given.
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291 This is useful for reloading related buffers
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292 which are affected by a single command.
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293 NOTE: When this autocommand is executed, the
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diff changeset
294 current buffer "%" may be different from the
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295 buffer that was changed "<afile>".
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296 NOTE: The commands must not change the current
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297 buffer, jump to another buffer or delete a
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298 buffer. *E246*
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299 NOTE: This event never nests, to avoid an
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diff changeset
300 endless loop. This means that while executing
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301 commands for the FileChangedShell event no
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302 other FileChangedShell event will be
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303 triggered.
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304 *FileChangedRO*
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305 FileChangedRO Before making the first change to a read-only
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diff changeset
306 file. Can be used to check-out the file from
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parents:
diff changeset
307 a source control system. Not triggered when
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vimboss
parents:
diff changeset
308 the change was caused by an autocommand.
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309 WARNING: This event is triggered when making a
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310 change, just before the change is applied to
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311 the text. If the autocommand moves the cursor
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diff changeset
312 the effect of the change is undefined.
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313 *FocusGained*
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314 FocusGained When Vim got input focus. Only for the GUI
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315 version and a few console versions where this
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316 can be detected.
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317 *FocusLost*
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318 FocusLost When Vim lost input focus. Only for the GUI
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319 version and a few console versions where this
11
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vimboss
parents: 7
diff changeset
320 can be detected. May also happen when a
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vimboss
parents: 7
diff changeset
321 dialog pops up.
7
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parents:
diff changeset
322 *FuncUndefined*
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323 FuncUndefined When a user function is used but it isn't
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diff changeset
324 defined. Useful for defining a function only
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diff changeset
325 when it's used. Both <amatch> and <afile> are
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326 set to the name of the function.
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vimboss
parents:
diff changeset
327 *CursorHold*
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parents:
diff changeset
328 CursorHold When the user doesn't press a key for the time
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vimboss
parents:
diff changeset
329 specified with 'updatetime'. Not re-triggered
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parents:
diff changeset
330 until the user has pressed a key (i.e. doesn't
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parents:
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331 fire every 'updatetime' ms if you leave Vim to
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vimboss
parents:
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332 make some coffee. :) See |CursorHold-example|
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vimboss
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333 for previewing tags.
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parents:
diff changeset
334 This event is only triggered in Normal mode.
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vimboss
parents:
diff changeset
335 Note: Interactive commands cannot be used for
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vimboss
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diff changeset
336 this event. There is no hit-enter prompt,
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337 the screen is updated directly (when needed).
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vimboss
parents:
diff changeset
338 Note: In the future there will probably be
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vimboss
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diff changeset
339 another option to set the time.
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340 Hint: to force an update of the status lines
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vimboss
parents:
diff changeset
341 use: >
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vimboss
parents:
diff changeset
342 :let &ro = &ro
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vimboss
parents:
diff changeset
343 < {only on Amiga, Unix, Win32, MSDOS and all GUI
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parents:
diff changeset
344 versions}
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vimboss
parents:
diff changeset
345 *BufEnter*
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346 BufEnter After entering a buffer. Useful for setting
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vimboss
parents:
diff changeset
347 options for a file type. Also executed when
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vimboss
parents:
diff changeset
348 starting to edit a buffer, after the
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349 BufReadPost autocommands.
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parents:
diff changeset
350 *BufLeave*
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351 BufLeave Before leaving to another buffer. Also when
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vimboss
parents:
diff changeset
352 leaving or closing the current window and the
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353 new current window is not for the same buffer.
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diff changeset
354 Not used for ":qa" or ":q" when exiting Vim.
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vimboss
parents:
diff changeset
355 *BufWinEnter*
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vimboss
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diff changeset
356 BufWinEnter After a buffer is displayed in a window. This
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vimboss
parents:
diff changeset
357 can be when the buffer is loaded (after
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vimboss
parents:
diff changeset
358 processing the modelines), when a hidden
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diff changeset
359 buffer is displayed in a window (and is no
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360 longer hidden) or a buffer already visible in
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vimboss
parents:
diff changeset
361 a window is also displayed in another window.
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parents:
diff changeset
362 *BufWinLeave*
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363 BufWinLeave Before a buffer is removed from a window.
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vimboss
parents:
diff changeset
364 Not when it's still visible in another window.
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parents:
diff changeset
365 Also triggered when exiting. It's triggered
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parents:
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366 before BufUnload or BufHidden.
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parents:
diff changeset
367 NOTE: When this autocommand is executed, the
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vimboss
parents:
diff changeset
368 current buffer "%" may be different from the
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parents:
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369 buffer being unloaded "<afile>".
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parents:
diff changeset
370 *BufUnload*
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parents:
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371 BufUnload Before unloading a buffer. This is when the
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vimboss
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diff changeset
372 text in the buffer is going to be freed. This
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373 may be after a BufWritePost and before a
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374 BufDelete. Also used for all buffers that are
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vimboss
parents:
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375 loaded when Vim is going to exit.
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vimboss
parents:
diff changeset
376 NOTE: When this autocommand is executed, the
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vimboss
parents:
diff changeset
377 current buffer "%" may be different from the
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vimboss
parents:
diff changeset
378 buffer being unloaded "<afile>".
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vimboss
parents:
diff changeset
379 *BufHidden*
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380 BufHidden Just after a buffer has become hidden. That
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vimboss
parents:
diff changeset
381 is, when there are no longer windows that show
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382 the buffer, but the buffer is not unloaded or
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383 deleted. Not used for ":qa" or ":q" when
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parents:
diff changeset
384 exiting Vim.
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385 NOTE: When this autocommand is executed, the
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parents:
diff changeset
386 current buffer "%" may be different from the
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387 buffer being unloaded "<afile>".
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388 *BufNew*
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389 BufNew Just after creating a new buffer. Also used
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diff changeset
390 just after a buffer has been renamed. When
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391 the buffer is added to the buffer list BufAdd
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392 will be triggered too.
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393 NOTE: When this autocommand is executed, the
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vimboss
parents:
diff changeset
394 current buffer "%" may be different from the
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diff changeset
395 buffer being created "<afile>".
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396 *BufCreate* *BufAdd*
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diff changeset
397 BufAdd or BufCreate Just after creating a new buffer which is
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parents:
diff changeset
398 added to the buffer list, or adding a buffer
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399 to the buffer list.
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parents:
diff changeset
400 Also used just after a buffer in the buffer
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diff changeset
401 list has been renamed.
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402 The BufCreate event is for historic reasons.
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parents:
diff changeset
403 NOTE: When this autocommand is executed, the
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parents:
diff changeset
404 current buffer "%" may be different from the
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405 buffer being created "<afile>".
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406 *BufDelete*
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407 BufDelete Before deleting a buffer from the buffer list.
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diff changeset
408 The BufUnload may be called first (if the
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409 buffer was loaded).
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diff changeset
410 Also used just before a buffer in the buffer
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411 list is renamed.
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412 NOTE: When this autocommand is executed, the
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vimboss
parents:
diff changeset
413 current buffer "%" may be different from the
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diff changeset
414 buffer being deleted "<afile>".
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diff changeset
415 *BufWipeout*
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416 BufWipeout Before completely deleting a buffer. The
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diff changeset
417 BufUnload and BufDelete events may be called
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418 first (if the buffer was loaded and was in the
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419 buffer list). Also used just before a buffer
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diff changeset
420 is renamed (also when it's not in the buffer
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421 list).
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422 NOTE: When this autocommand is executed, the
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vimboss
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diff changeset
423 current buffer "%" may be different from the
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diff changeset
424 buffer being deleted "<afile>".
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diff changeset
425 *WinEnter*
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426 WinEnter After entering another window. Not done for
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427 the first window, when Vim has just started.
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428 Useful for setting the window height.
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429 If the window is for another buffer, Vim
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430 executes the BufEnter autocommands after the
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diff changeset
431 WinEnter autocommands.
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432 Note: When using ":split fname" the WinEnter
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diff changeset
433 event is triggered after the split but before
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diff changeset
434 the file "fname" is loaded.
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diff changeset
435 *WinLeave*
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436 WinLeave Before leaving a window. If the window to be
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diff changeset
437 entered next is for a different buffer, Vim
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vimboss
parents:
diff changeset
438 executes the BufLeave autocommands before the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
439 WinLeave autocommands (but not for ":new").
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parents:
diff changeset
440 Not used for ":qa" or ":q" when exiting Vim.
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parents:
diff changeset
441 *CmdwinEnter*
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parents:
diff changeset
442 CmdwinEnter After entering the command-line window.
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parents:
diff changeset
443 Useful for setting options specifically for
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vimboss
parents:
diff changeset
444 this special type of window. This is
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vimboss
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diff changeset
445 triggered _instead_ of BufEnter and WinEnter.
3fc0f57ecb91 updated for version 7.0001
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diff changeset
446 <afile> is set to a single character,
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vimboss
parents:
diff changeset
447 indicating the type of command-line.
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vimboss
parents:
diff changeset
448 |cmdwin-char|
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parents:
diff changeset
449 *CmdwinLeave*
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vimboss
parents:
diff changeset
450 CmdwinLeave Before leaving the command-line window.
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vimboss
parents:
diff changeset
451 Useful to clean up any global setting done
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vimboss
parents:
diff changeset
452 with CmdwinEnter. This is triggered _instead_
3fc0f57ecb91 updated for version 7.0001
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parents:
diff changeset
453 of BufLeave and WinLeave.
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vimboss
parents:
diff changeset
454 <afile> is set to a single character,
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vimboss
parents:
diff changeset
455 indicating the type of command-line.
3fc0f57ecb91 updated for version 7.0001
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parents:
diff changeset
456 |cmdwin-char|
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vimboss
parents:
diff changeset
457 *GUIEnter*
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vimboss
parents:
diff changeset
458 GUIEnter After starting the GUI successfully, and after
3fc0f57ecb91 updated for version 7.0001
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diff changeset
459 opening the window. It is triggered before
3fc0f57ecb91 updated for version 7.0001
vimboss
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diff changeset
460 VimEnter when using gvim. Can be used to
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vimboss
parents:
diff changeset
461 position the window from a .gvimrc file: >
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vimboss
parents:
diff changeset
462 :autocmd GUIEnter * winpos 100 50
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
463 < *VimEnter*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
464 VimEnter After doing all the startup stuff, including
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
465 loading .vimrc files, executing the "-c cmd"
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vimboss
parents:
diff changeset
466 arguments, creating all windows and loading
3fc0f57ecb91 updated for version 7.0001
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diff changeset
467 the buffers in them.
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diff changeset
468 *VimLeavePre*
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diff changeset
469 VimLeavePre Before exiting Vim, just before writing the
3fc0f57ecb91 updated for version 7.0001
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parents:
diff changeset
470 .viminfo file. This is executed only once,
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
471 if there is a match with the name of what
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diff changeset
472 happens to be the current buffer when exiting.
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diff changeset
473 Mostly useful with a "*" pattern. >
3fc0f57ecb91 updated for version 7.0001
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parents:
diff changeset
474 :autocmd VimLeavePre * call CleanupStuff()
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
475 < To detect an abnormal exit use |v:dying|.
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vimboss
parents:
diff changeset
476 *VimLeave*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
477 VimLeave Before exiting Vim, just after writing the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
478 .viminfo file. Executed only once, like
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
479 VimLeavePre.
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vimboss
parents:
diff changeset
480 To detect an abnormal exit use |v:dying|.
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parents:
diff changeset
481 *EncodingChanged*
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parents:
diff changeset
482 EncodingChanged Fires off when the 'encoding' option is
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
483 changed. Useful to set up fonts, for example.
11
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vimboss
parents: 7
diff changeset
484 *InsertEnter*
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vimboss
parents: 7
diff changeset
485 InsertEnter When starting Insert mode. Also for Replace
4424b47a0797 updated for version 7.0003
vimboss
parents: 7
diff changeset
486 mode and Virtual Replace mode. The
4424b47a0797 updated for version 7.0003
vimboss
parents: 7
diff changeset
487 |v:insertmode| variable indicates the mode.
4424b47a0797 updated for version 7.0003
vimboss
parents: 7
diff changeset
488 Be careful not to move the cursor or do
4424b47a0797 updated for version 7.0003
vimboss
parents: 7
diff changeset
489 anything else that the user does not expect.
4424b47a0797 updated for version 7.0003
vimboss
parents: 7
diff changeset
490 *InsertChange*
4424b47a0797 updated for version 7.0003
vimboss
parents: 7
diff changeset
491 InsertChange When typing <Insert> while in Insert or
4424b47a0797 updated for version 7.0003
vimboss
parents: 7
diff changeset
492 Replace mode. The |v:insertmode| variable
4424b47a0797 updated for version 7.0003
vimboss
parents: 7
diff changeset
493 indicates the new mode.
4424b47a0797 updated for version 7.0003
vimboss
parents: 7
diff changeset
494 Be careful not to move the cursor or do
4424b47a0797 updated for version 7.0003
vimboss
parents: 7
diff changeset
495 anything else that the user does not expect.
4424b47a0797 updated for version 7.0003
vimboss
parents: 7
diff changeset
496 *InsertLeave*
4424b47a0797 updated for version 7.0003
vimboss
parents: 7
diff changeset
497 InsertLeave When leaving Insert mode. Also when using
4424b47a0797 updated for version 7.0003
vimboss
parents: 7
diff changeset
498 CTRL-O |i_CTRL-O|.
7
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vimboss
parents:
diff changeset
499 *FileEncoding*
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parents:
diff changeset
500 FileEncoding Obsolete. It still works and is equivalent
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
501 to |EncodingChanged|.
12
bdeee1504ac1 updated for version 7.0004
vimboss
parents: 11
diff changeset
502 *ColorScheme*
bdeee1504ac1 updated for version 7.0004
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parents: 11
diff changeset
503 ColorScheme After loading a color scheme. |:colorscheme|
7
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parents:
diff changeset
504 *RemoteReply*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
505 RemoteReply When a reply from a Vim that functions as
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
506 server was received |server2client()|.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
507 <amatch> is equal to the {serverid} from which
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
508 the reply was sent, and <afile> is the actual
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
509 reply string.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
510 Note that even if an autocommand is defined,
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
511 the reply should be read with |remote_read()|
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
512 to consume it.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
513 *TermChanged*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
514 TermChanged After the value of 'term' has changed. Useful
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
515 for re-loading the syntax file to update the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
516 colors, fonts and other terminal-dependent
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
517 settings. Executed for all loaded buffers.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
518 *TermResponse*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
519 TermResponse After the response to |t_RV| is received from
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
520 the terminal. The value of |v:termresponse|
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
521 can be used to do things depending on the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
522 terminal version.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
523 *UserGettingBored*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
524 UserGettingBored When the user hits CTRL-C. Just kidding! :-)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
525 *User*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
526 User Never executed automatically. To be used for
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
527 autocommands that are only executed with
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
528 ":doautocmd".
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
529
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
530 You can specify a comma-separated list of event names. No white space can be
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
531 used in this list. The command applies to all the events in the list.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
532
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
533 For READING FILES there are four kinds of events possible:
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
534 BufNewFile starting to edit a non-existent file
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
535 BufReadPre BufReadPost starting to edit an existing file
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
536 FilterReadPre FilterReadPost read the temp file with filter output
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
537 FileReadPre FileReadPost any other file read
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
538 Vim uses only one of these four kinds when reading a file. The "Pre" and
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
539 "Post" events are both triggered, before and after reading the file.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
540
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
541 Note that the autocommands for the *ReadPre events and all the Filter events
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
542 are not allowed to change the current buffer (you will get an error message if
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
543 this happens). This is to prevent the file to be read into the wrong buffer.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
544
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
545 Note that the 'modified' flag is reset AFTER executing the BufReadPost
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
546 and BufNewFile autocommands. But when the 'modified' option was set by the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
547 autocommands, this doesn't happen.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
548
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
549 You can use the 'eventignore' option to ignore a number of events or all
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
550 events.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
551
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
552 ==============================================================================
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
553 6. Patterns *autocmd-patterns* *{pat}*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
554
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
555 The file pattern {pat} is tested for a match against the file name in one of
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
556 two ways:
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
557 1. When there is no '/' in the pattern, Vim checks for a match against only
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
558 the tail part of the file name (without its leading directory path).
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
559 2. When there is a '/' in the pattern, Vim checks for a match against the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
560 both short file name (as you typed it) and the full file name (after
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
561 expanding it to a full path and resolving symbolic links).
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
562
40
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
563 The special pattern <buffer> or <buffer=N> is used for buffer-local
f1d2a58883b9 updated for version 7.0024
vimboss
parents: 39
diff changeset
564 autocommands |autocmd-buflocal|. This pattern is not matched against the name
f1d2a58883b9 updated for version 7.0024
vimboss
parents: 39
diff changeset
565 of a buffer.
f1d2a58883b9 updated for version 7.0024
vimboss
parents: 39
diff changeset
566
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
567 Examples: >
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
568 :autocmd BufRead *.txt set et
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
569 Set the 'et' option for all text files. >
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
570
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
571 :autocmd BufRead /vim/src/*.c set cindent
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
572 Set the 'cindent' option for C files in the /vim/src directory. >
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
573
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
574 :autocmd BufRead /tmp/*.c set ts=5
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575 If you have a link from "/tmp/test.c" to "/home/nobody/vim/src/test.c", and
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576 you start editing "/tmp/test.c", this autocommand will match.
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577
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578 Note: To match part of a path, but not from the root directory, use a '*' as
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diff changeset
579 the first character. Example: >
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580 :autocmd BufRead */doc/*.txt set tw=78
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diff changeset
581 This autocommand will for example be executed for "/tmp/doc/xx.txt" and
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diff changeset
582 "/usr/home/piet/doc/yy.txt". The number of directories does not matter here.
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diff changeset
583
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diff changeset
584
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585 The file name that the pattern is matched against is after expanding
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586 wildcards. Thus is you issue this command: >
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587 :e $ROOTDIR/main.$EXT
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588 The argument is first expanded to: >
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589 /usr/root/main.py
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590 Before it's matched with the pattern of the autocommand. Careful with this
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591 when using events like FileReadCmd, the value of <amatch> may not be what you
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592 expect.
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diff changeset
593
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diff changeset
594
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595 Environment variables can be used in a pattern: >
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596 :autocmd BufRead $VIMRUNTIME/doc/*.txt set expandtab
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597 And ~ can be used for the home directory (if $HOME is defined): >
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598 :autocmd BufWritePost ~/.vimrc so ~/.vimrc
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599 :autocmd BufRead ~archive/* set readonly
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diff changeset
600 The environment variable is expanded when the autocommand is defined, not when
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601 the autocommand is executed. This is different from the command!
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diff changeset
602
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603 *file-pattern*
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diff changeset
604 The pattern is interpreted like mostly used in file names:
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diff changeset
605 * matches any sequence of characters
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diff changeset
606 ? matches any single character
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parents:
diff changeset
607 \? matches a '?'
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diff changeset
608 . matches a '.'
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parents:
diff changeset
609 ~ matches a '~'
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diff changeset
610 , separates patterns
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parents:
diff changeset
611 \, matches a ','
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vimboss
parents:
diff changeset
612 { } like \( \) in a |pattern|
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parents:
diff changeset
613 , inside { }: like \| in a |pattern|
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parents:
diff changeset
614 \ special meaning like in a |pattern|
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parents:
diff changeset
615 [ch] matches 'c' or 'h'
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diff changeset
616 [^ch] match any character but 'c' and 'h'
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diff changeset
617
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diff changeset
618 Note that for all systems the '/' character is used for path separator (even
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parents:
diff changeset
619 MS-DOS and OS/2). This was done because the backslash is difficult to use
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diff changeset
620 in a pattern and to make the autocommands portable across different systems.
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diff changeset
621
40
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diff changeset
622 *autocmd-changes*
7
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diff changeset
623 Matching with the pattern is done when an event is triggered. Changing the
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diff changeset
624 buffer name in one of the autocommands, or even deleting the buffer, does not
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diff changeset
625 change which autocommands will be executed. Example: >
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parents:
diff changeset
626
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parents:
diff changeset
627 au BufEnter *.foo bdel
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diff changeset
628 au BufEnter *.foo set modified
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diff changeset
629
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diff changeset
630 This will delete the current buffer and then set 'modified' in what has become
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diff changeset
631 the current buffer instead. Vim doesn't take into account that "*.foo"
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diff changeset
632 doesn't match with that buffer name. It matches "*.foo" with the name of the
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parents:
diff changeset
633 buffer at the moment the event was triggered.
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diff changeset
634
40
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diff changeset
635 However, buffer-local autocommands will not be executed for a buffer that has
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diff changeset
636 been wiped out with |:bwipe|. After deleting the buffer with |:bdel| the
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diff changeset
637 buffer actually still exists (it becomes unlisted), thus the autocommands are
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parents: 39
diff changeset
638 still executed.
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diff changeset
639
7
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diff changeset
640 ==============================================================================
40
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diff changeset
641 7. Buffer-local autocommands *autocmd-buflocal* *autocmd-buffer-local*
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diff changeset
642 *<buffer=N>* *<buffer=abuf>* *E680*
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diff changeset
643
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diff changeset
644 Buffer-local autocommands are attached to a specific buffer. They are useful
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diff changeset
645 if the buffer does not have a name and when the name does not match a specific
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diff changeset
646 pattern. But it also means they must be explicitly added to each buffer.
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diff changeset
647
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diff changeset
648 Instead of a pattern buffer-local autocommands use one of these forms:
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diff changeset
649 <buffer> current buffer
f1d2a58883b9 updated for version 7.0024
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diff changeset
650 <buffer=99> buffer number 99
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diff changeset
651 <buffer=abuf> using <abuf> (only when executing autocommands)
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diff changeset
652 |<abuf>|
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diff changeset
653
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diff changeset
654 Examples: >
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diff changeset
655 :au CursorHold <buffer> echo 'hold'
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diff changeset
656 :au CursorHold <buffer=33> echo 'hold'
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
657 :au CursorHold <buffer=abuf> echo 'hold'
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parents: 39
diff changeset
658
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
659 All the commands for autocommands also work with buffer-local autocommands,
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parents: 39
diff changeset
660 simply use the special string instead of the pattern. Examples: >
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
661 :au! * <buffer> " remove buffer-local autotommands for
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parents: 39
diff changeset
662 " current buffer
f1d2a58883b9 updated for version 7.0024
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diff changeset
663 :au! * <buffer=33> " remove buffer-local autotommands for
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parents: 39
diff changeset
664 " buffer #33
f1d2a58883b9 updated for version 7.0024
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diff changeset
665 :dobuf :au! CursorHold <buffer> " remove autocmd for given event for all
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parents: 39
diff changeset
666 " buffers
f1d2a58883b9 updated for version 7.0024
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diff changeset
667 :au * <buffer> " list buffer-local autocommands for
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vimboss
parents: 39
diff changeset
668 " current buffer
f1d2a58883b9 updated for version 7.0024
vimboss
parents: 39
diff changeset
669
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
670 Note that when an autocommand is defined for the current buffer, it is stored
f1d2a58883b9 updated for version 7.0024
vimboss
parents: 39
diff changeset
671 with the buffer number. Thus it uses the form "<buffer=12>", where 12 is the
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
672 number of the current buffer. You will see this when listing autocommands,
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parents: 39
diff changeset
673 for example.
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
674
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
675 To test for presence of buffer-local autocommands use the |exists()| function
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
676 as follows: >
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
677 :if exists("#CursorHold#<buffer=12>") | ... | endif
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
678 :if exists("#CursorHold#<buffer>") | ... | endif " for current buffer
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
679
f1d2a58883b9 updated for version 7.0024
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diff changeset
680 When a buffer is wiped out its buffer-local autocommands are also gone, of
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parents: 39
diff changeset
681 course. Note that when deleting a buffer, e.g., with ":bdel", it is only
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
682 unlisted, the autocommands are still present. In order to see the removal of
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
683 buffer-local autocommands: >
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
684 :set verbose=6
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
685
f1d2a58883b9 updated for version 7.0024
vimboss
parents: 39
diff changeset
686 It is not possible to define buffer-local autocommands for a non-existent
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
687 buffer.
f1d2a58883b9 updated for version 7.0024
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diff changeset
688
f1d2a58883b9 updated for version 7.0024
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parents: 39
diff changeset
689 ==============================================================================
f1d2a58883b9 updated for version 7.0024
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diff changeset
690 8. Groups *autocmd-groups*
7
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parents:
diff changeset
691
3fc0f57ecb91 updated for version 7.0001
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parents:
diff changeset
692 Autocommands can be put together in a group. This is useful for removing or
3fc0f57ecb91 updated for version 7.0001
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parents:
diff changeset
693 executing a group of autocommands. For example, all the autocommands for
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
694 syntax highlighting are put in the "highlight" group, to be able to execute
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
695 ":doautoall highlight BufRead" when the GUI starts.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
696
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parents:
diff changeset
697 When no specific group is selected, Vim uses the default group. The default
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
698 group does not have a name. You cannot execute the autocommands from the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
699 default group separately; you can execute them only by executing autocommands
3fc0f57ecb91 updated for version 7.0001
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parents:
diff changeset
700 for all groups.
3fc0f57ecb91 updated for version 7.0001
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parents:
diff changeset
701
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vimboss
parents:
diff changeset
702 Normally, when executing autocommands automatically, Vim uses the autocommands
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
703 for all groups. The group only matters when executing autocommands with
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parents:
diff changeset
704 ":doautocmd" or ":doautoall", or when defining or deleting autocommands.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
705
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vimboss
parents:
diff changeset
706 The group name can contain any characters except white space. The group name
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
707 "end" is reserved (also in uppercase).
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
708
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vimboss
parents:
diff changeset
709 The group name is case sensitive. Note that this is different from the event
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
710 name!
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
711
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vimboss
parents:
diff changeset
712 *:aug* *:augroup*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
713 :aug[roup] {name} Define the autocmd group name for the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
714 following ":autocmd" commands. The name "end"
3fc0f57ecb91 updated for version 7.0001
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parents:
diff changeset
715 or "END" selects the default group.
3fc0f57ecb91 updated for version 7.0001
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parents:
diff changeset
716
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parents:
diff changeset
717 *:augroup-delete* *E367*
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parents:
diff changeset
718 :aug[roup]! {name} Delete the autocmd group {name}. Don't use
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
719 this if there is still an autocommand using
3fc0f57ecb91 updated for version 7.0001
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parents:
diff changeset
720 this group! This is not checked.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
721
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vimboss
parents:
diff changeset
722 To enter autocommands for a specific group, use this method:
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
723 1. Select the group with ":augroup {name}".
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
724 2. Delete any old autocommands with ":au!".
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
725 3. Define the autocommands.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
726 4. Go back to the default group with "augroup END".
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
727
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vimboss
parents:
diff changeset
728 Example: >
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
729 :augroup uncompress
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
730 : au!
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
731 : au BufEnter *.gz %!gunzip
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
732 :augroup END
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vimboss
parents:
diff changeset
733
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vimboss
parents:
diff changeset
734 This prevents having the autocommands defined twice (e.g., after sourcing the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
735 .vimrc file again).
3fc0f57ecb91 updated for version 7.0001
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parents:
diff changeset
736
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parents:
diff changeset
737 ==============================================================================
40
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diff changeset
738 9. Executing autocommands *autocmd-execute*
7
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vimboss
parents:
diff changeset
739
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parents:
diff changeset
740 Vim can also execute Autocommands non-automatically. This is useful if you
3fc0f57ecb91 updated for version 7.0001
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parents:
diff changeset
741 have changed autocommands, or when Vim has executed the wrong autocommands
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
742 (e.g., the file pattern match was wrong).
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
743
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vimboss
parents:
diff changeset
744 Note that the 'eventignore' option applies here too. Events listed in this
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
745 option will not cause any commands to be executed.
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vimboss
parents:
diff changeset
746
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vimboss
parents:
diff changeset
747 *:do* *:doau* *:doautocmd* *E217*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
748 :do[autocmd] [group] {event} [fname]
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vimboss
parents:
diff changeset
749 Apply the autocommands matching [fname] (default:
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
750 current file name) for {event} to the current buffer.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
751 You can use this when the current file name does not
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
752 match the right pattern, after changing settings, or
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
753 to execute autocommands for a certain event.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
754 It's possible to use this inside an autocommand too,
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
755 so you can base the autocommands for one extension on
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
756 another extension. Example: >
3fc0f57ecb91 updated for version 7.0001
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parents:
diff changeset
757 :au Bufenter *.cpp so ~/.vimrc_cpp
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vimboss
parents:
diff changeset
758 :au Bufenter *.cpp doau BufEnter x.c
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parents:
diff changeset
759 < Be careful to avoid endless loops. See
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
760 |autocmd-nested|.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
761
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
762 When the [group] argument is not given, Vim executes
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
763 the autocommands for all groups. When the [group]
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
764 argument is included, Vim executes only the matching
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
765 autocommands for that group. Note: if you use an
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
766 undefined group name, Vim gives you an error message.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
767
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vimboss
parents:
diff changeset
768 *:doautoa* *:doautoall*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
769 :doautoa[ll] [group] {event} [fname]
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
770 Like ":doautocmd", but apply the autocommands to each
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
771 loaded buffer. Note that {fname} is used to select
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
772 the autocommands, not the buffers to which they are
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
773 applied.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
774 Careful: Don't use this for autocommands that delete a
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
775 buffer, change to another buffer or change the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
776 contents of a buffer; the result is unpredictable.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
777 This command is intended for autocommands that set
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
778 options, change highlighting, and things like that.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
779
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
780 ==============================================================================
40
f1d2a58883b9 updated for version 7.0024
vimboss
parents: 39
diff changeset
781 10. Using autocommands *autocmd-use*
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
782
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
783 For WRITING FILES there are four possible sets of events. Vim uses only one
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
784 of these sets for a write command:
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
785
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vimboss
parents:
diff changeset
786 BufWriteCmd BufWritePre BufWritePost writing the whole buffer
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
787 FilterWritePre FilterWritePost writing to filter temp file
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
788 FileAppendCmd FileAppendPre FileAppendPost appending to a file
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
789 FileWriteCmd FileWritePre FileWritePost any other file write
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
790
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vimboss
parents:
diff changeset
791 When there is a matching "*Cmd" autocommand, it is assumed it will do the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
792 writing. No further writing is done and the other events are not triggered.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
793 |Cmd-event|
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
794
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vimboss
parents:
diff changeset
795 Note that the *WritePost commands should undo any changes to the buffer that
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
796 were caused by the *WritePre commands; otherwise, writing the file will have
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
797 the side effect of changing the buffer.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
798
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vimboss
parents:
diff changeset
799 Before executing the autocommands, the buffer from which the lines are to be
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
800 written temporarily becomes the current buffer. Unless the autocommands
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
801 change the current buffer or delete the previously current buffer, the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
802 previously current buffer is made the current buffer again.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
803
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vimboss
parents:
diff changeset
804 The *WritePre and *AppendPre autocommands must not delete the buffer from
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
805 which the lines are to be written.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
806
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vimboss
parents:
diff changeset
807 The '[ and '] marks have a special position:
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
808 - Before the *ReadPre event the '[ mark is set to the line just above where
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
809 the new lines will be inserted.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
810 - Before the *ReadPost event the '[ mark is set to the first line that was
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
811 just read, the '] mark to the last line.
26
404aac550f35 updated for version 7.0017
vimboss
parents: 22
diff changeset
812 - Before executing the *WriteCmd, *WritePre and *AppendPre autocommands the '[
404aac550f35 updated for version 7.0017
vimboss
parents: 22
diff changeset
813 mark is set to the first line that will be written, the '] mark to the last
404aac550f35 updated for version 7.0017
vimboss
parents: 22
diff changeset
814 line.
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
815 Careful: '[ and '] change when using commands that change the buffer.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
816
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vimboss
parents:
diff changeset
817 In commands which expect a file name, you can use "<afile>" for the file name
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
818 that is being read |:<afile>| (you can also use "%" for the current file
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
819 name). "<abuf>" can be used for the buffer number of the currently effective
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
820 buffer. This also works for buffers that doesn't have a name. But it doesn't
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
821 work for files without a buffer (e.g., with ":r file").
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
822
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vimboss
parents:
diff changeset
823 *gzip-example*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
824 Examples for reading and writing compressed files: >
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
825 :augroup gzip
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vimboss
parents:
diff changeset
826 : autocmd!
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
827 : autocmd BufReadPre,FileReadPre *.gz set bin
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
828 : autocmd BufReadPost,FileReadPost *.gz '[,']!gunzip
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
829 : autocmd BufReadPost,FileReadPost *.gz set nobin
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
830 : autocmd BufReadPost,FileReadPost *.gz execute ":doautocmd BufReadPost " . expand("%:r")
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
831 : autocmd BufWritePost,FileWritePost *.gz !mv <afile> <afile>:r
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
832 : autocmd BufWritePost,FileWritePost *.gz !gzip <afile>:r
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
833
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
834 : autocmd FileAppendPre *.gz !gunzip <afile>
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
835 : autocmd FileAppendPre *.gz !mv <afile>:r <afile>
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
836 : autocmd FileAppendPost *.gz !mv <afile> <afile>:r
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
837 : autocmd FileAppendPost *.gz !gzip <afile>:r
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
838 :augroup END
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
839
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
840 The "gzip" group is used to be able to delete any existing autocommands with
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
841 ":autocmd!", for when the file is sourced twice.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
842
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
843 ("<afile>:r" is the file name without the extension, see |:_%:|)
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
844
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
845 The commands executed for the BufNewFile, BufRead/BufReadPost, BufWritePost,
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
846 FileAppendPost and VimLeave events do not set or reset the changed flag of the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
847 buffer. When you decompress the buffer with the BufReadPost autocommands, you
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
848 can still exit with ":q". When you use ":undo" in BufWritePost to undo the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
849 changes made by BufWritePre commands, you can still do ":q" (this also makes
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
850 "ZZ" work). If you do want the buffer to be marked as modified, set the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
851 'modified' option.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
852
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
853 To execute Normal mode commands from an autocommand, use the ":normal"
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
854 command. Use with care! If the Normal mode command is not finished, the user
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
855 needs to type characters (e.g., after ":normal m" you need to type a mark
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
856 name).
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
857
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
858 If you want the buffer to be unmodified after changing it, reset the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
859 'modified' option. This makes it possible to exit the buffer with ":q"
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
860 instead of ":q!".
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
861
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
862 *autocmd-nested* *E218*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
863 By default, autocommands do not nest. If you use ":e" or ":w" in an
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
864 autocommand, Vim does not execute the BufRead and BufWrite autocommands for
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
865 those commands. If you do want this, use the "nested" flag for those commands
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
866 in which you want nesting. For example: >
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
867 :autocmd FileChangedShell *.c nested e!
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
868 The nesting is limited to 10 levels to get out of recursive loops.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
869
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
870 It's possible to use the ":au" command in an autocommand. This can be a
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
871 self-modifying command! This can be useful for an autocommand that should
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
872 execute only once.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
873
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
874 There is currently no way to disable the autocommands. If you want to write a
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
875 file without executing the autocommands for that type of file, write it under
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
876 another name and rename it with a shell command. In some situations you can
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
877 use the 'eventignore' option.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
878
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
879 Note: When reading a file (with ":read file" or with a filter command) and the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
880 last line in the file does not have an <EOL>, Vim remembers this. At the next
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
881 write (with ":write file" or with a filter command), if the same line is
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
882 written again as the last line in a file AND 'binary' is set, Vim does not
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
883 supply an <EOL>. This makes a filter command on the just read lines write the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
884 same file as was read, and makes a write command on just filtered lines write
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
885 the same file as was read from the filter. For example, another way to write
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
886 a compressed file: >
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
887
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
888 :autocmd FileWritePre *.gz set bin|'[,']!gzip
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
889 :autocmd FileWritePost *.gz undo|set nobin
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
890 <
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
891 *autocommand-pattern*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
892 You can specify multiple patterns, separated by commas. Here are some
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
893 examples: >
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
894
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
895 :autocmd BufRead * set tw=79 nocin ic infercase fo=2croq
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
896 :autocmd BufRead .letter set tw=72 fo=2tcrq
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
897 :autocmd BufEnter .letter set dict=/usr/lib/dict/words
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
898 :autocmd BufLeave .letter set dict=
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
899 :autocmd BufRead,BufNewFile *.c,*.h set tw=0 cin noic
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
900 :autocmd BufEnter *.c,*.h abbr FOR for (i = 0; i < 3; ++i)<CR>{<CR>}<Esc>O
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
901 :autocmd BufLeave *.c,*.h unabbr FOR
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
902
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
903 For makefiles (makefile, Makefile, imakefile, makefile.unix, etc.): >
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
904
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
905 :autocmd BufEnter ?akefile* set include=^s\=include
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
906 :autocmd BufLeave ?akefile* set include&
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
907
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
908 To always start editing C files at the first function: >
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
909
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
910 :autocmd BufRead *.c,*.h 1;/^{
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
911
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
912 Without the "1;" above, the search would start from wherever the file was
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
913 entered, rather than from the start of the file.
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
914
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
915 *skeleton* *template*
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
916 To read a skeleton (template) file when opening a new file: >
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
917
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
918 :autocmd BufNewFile *.c 0r ~/vim/skeleton.c
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
919 :autocmd BufNewFile *.h 0r ~/vim/skeleton.h
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
920 :autocmd BufNewFile *.java 0r ~/vim/skeleton.java
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
921
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
922 To insert the current date and time in a *.html file when writing it: >
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
923
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
924 :autocmd BufWritePre,FileWritePre *.html ks|call LastMod()|'s
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
925 :fun LastMod()
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
926 : if line("$") > 20
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
927 : let l = 20
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
928 : else
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
929 : let l = line("$")
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
930 : endif
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
931 : exe "1," . l . "g/Last modified: /s/Last modified: .*/Last modified: " .
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
932 : \ strftime("%Y %b %d")
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
933 :endfun
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
934
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
935 You need to have a line "Last modified: <date time>" in the first 20 lines
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
936 of the file for this to work. Vim replaces <date time> (and anything in the
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
937 same line after it) with the current date and time. Explanation:
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
938 ks mark current position with mark 's'
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
939 call LastMod() call the LastMod() function to do the work
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
940 's return the cursor to the old position
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
941 The LastMod() function checks if the file is shorter than 20 lines, and then
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942 uses the ":g" command to find lines that contain "Last modified: ". For those
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943 lines the ":s" command is executed to replace the existing date with the
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944 current one. The ":execute" command is used to be able to use an expression
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945 for the ":g" and ":s" commands. The date is obtained with the strftime()
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946 function. You can change its argument to get another date string.
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947
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948 When entering :autocmd on the command-line, completion of events and command
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949 names may be done (with <Tab>, CTRL-D, etc.) where appropriate.
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950
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951 Vim executes all matching autocommands in the order that you specify them.
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952 It is recommended that your first autocommand be used for all files by using
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953 "*" as the file pattern. This means that you can define defaults you like
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954 here for any settings, and if there is another matching autocommand it will
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955 override these. But if there is no other matching autocommand, then at least
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956 your default settings are recovered (if entering this file from another for
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957 which autocommands did match). Note that "*" will also match files starting
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958 with ".", unlike Unix shells.
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959
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960 *autocmd-searchpat*
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961 Autocommands do not change the current search patterns. Vim saves the current
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962 search patterns before executing autocommands then restores them after the
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963 autocommands finish. This means that autocommands do not affect the strings
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964 highlighted with the 'hlsearch' option. Within autocommands, you can still
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965 use search patterns normally, e.g., with the "n" command.
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966 If you want an autocommand to set the search pattern, such that it is used
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967 after the autocommand finishes, use the ":let @/ =" command.
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968 The search-highlighting cannot be switched off with ":nohlsearch" in an
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969 autocommand. Use the 'h' flag in the 'viminfo' option to disable search-
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970 highlighting when starting Vim.
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971
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972 *Cmd-event*
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973 When using one of the "*Cmd" events, the matching autocommands are expected to
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974 do the file reading or writing. This can be used when working with a special
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975 kind of file, for example on a remote system.
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976 CAREFUL: If you use these events in a wrong way, it may have the effect of
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977 making it impossible to read or write the matching files! Make sure you test
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978 your autocommands properly. Best is to use a pattern that will never match a
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979 normal file name, for example "ftp://*".
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980
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981 When defining a BufReadCmd it will be difficult for Vim to recover a crashed
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982 editing session. When recovering from the original file, Vim reads only those
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983 parts of a file that are not found in the swap file. Since that is not
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984 possible with a BufReadCmd, use the |:preserve| command to make sure the
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985 original file isn't needed for recovery. You might want to do this only when
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986 you expect the file to be modified.
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987
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988 The |v:cmdarg| variable holds the "++enc=" and "++ff=" argument that are
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989 effective. These should be used for the command that reads/writes the file.
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990 The |v:cmdbang| variable is one when "!" was used, zero otherwise.
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991
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992 See the $VIMRUNTIME/plugin/netrw.vim for examples.
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993
40
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994
7
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995 vim:tw=78:ts=8:ft=help:norl: