annotate runtime/doc/if_ruby.txt @ 16553:0e473e9e70c2 v8.1.1280

patch 8.1.1280: remarks about functionality not in Vi clutters the help commit https://github.com/vim/vim/commit/25c9c680ec4dfbb51f4ef21c3460a48d3c67ffc8 Author: Bram Moolenaar <Bram@vim.org> Date: Sun May 5 18:13:34 2019 +0200 patch 8.1.1280: remarks about functionality not in Vi clutters the help Problem: Remarks about functionality not in Vi clutters the help. Solution: Move all info about what is new in Vim or already existed in Vi to vi_diff.txt. Remove {not in Vi} remarks. (closes #4268) Add "noet" to the help files modeline. Also include many other help file improvements.
author Bram Moolenaar <Bram@vim.org>
date Sun, 05 May 2019 18:15:06 +0200
parents 518f44125207
children 2704c4e3e20a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 *if_ruby.txt* For Vim version 8.1. Last change: 2019 May 05
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4 VIM REFERENCE MANUAL by Shugo Maeda
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5
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6 The Ruby Interface to Vim *ruby* *Ruby*
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9 1. Commands |ruby-commands|
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10 2. The Vim module |ruby-vim|
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11 3. Vim::Buffer objects |ruby-buffer|
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12 4. Vim::Window objects |ruby-window|
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13 5. Global variables |ruby-globals|
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14 6. rubyeval() Vim function |ruby-rubyeval|
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15 7. Dynamic loading |ruby-dynamic|
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17 *E266* *E267* *E268* *E269* *E270* *E271* *E272* *E273*
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18
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19 {only available when Vim was compiled with the |+ruby| feature}
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20
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21 The home page for ruby is http://www.ruby-lang.org/. You can find links for
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22 downloading Ruby there.
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23
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24 ==============================================================================
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25 1. Commands *ruby-commands*
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26
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27 *:ruby* *:rub*
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28 :rub[y] {cmd} Execute Ruby command {cmd}. A command to try it out: >
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29 :ruby print "Hello"
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30
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31 :rub[y] << {endpattern}
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32 {script}
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33 {endpattern}
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34 Execute Ruby script {script}.
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35 {endpattern} must NOT be preceded by any white space.
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36 If {endpattern} is omitted, it defaults to a dot '.'
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37 like for the |:append| and |:insert| commands. This
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38 form of the |:ruby| command is mainly useful for
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39 including ruby code in vim scripts.
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40 Note: This command doesn't work when the Ruby feature
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41 wasn't compiled in. To avoid errors, see
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42 |script-here|.
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43
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44 Example Vim script: >
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45
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46 function! RedGem()
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47 ruby << EOF
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48 class Garnet
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49 def initialize(s)
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50 @buffer = Vim::Buffer.current
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51 vimputs(s)
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52 end
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53 def vimputs(s)
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54 @buffer.append(@buffer.count,s)
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55 end
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56 end
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57 gem = Garnet.new("pretty")
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58 EOF
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59 endfunction
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60 <
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61 To see what version of Ruby you have: >
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62 :ruby print RUBY_VERSION
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63 <
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64
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65 *:rubydo* *:rubyd* *E265*
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66 :[range]rubyd[o] {cmd} Evaluate Ruby command {cmd} for each line in the
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67 [range], with $_ being set to the text of each line in
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68 turn, without a trailing <EOL>. Setting $_ will change
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69 the text, but note that it is not possible to add or
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70 delete lines using this command.
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71 The default for [range] is the whole file: "1,$".
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72
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73 *:rubyfile* *:rubyf*
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74 :rubyf[ile] {file} Execute the Ruby script in {file}. This is the same as
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75 `:ruby load 'file'`, but allows file name completion.
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76
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77 Executing Ruby commands is not possible in the |sandbox|.
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78
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79 ==============================================================================
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80 2. The Vim module *ruby-vim*
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81
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82 Ruby code gets all of its access to vim via the "Vim" module.
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83
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84 Overview: >
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85 print "Hello" # displays a message
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86 Vim.command(cmd) # execute an Ex command
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87 num = Vim::Window.count # gets the number of windows
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88 w = Vim::Window[n] # gets window "n"
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89 cw = Vim::Window.current # gets the current window
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90 num = Vim::Buffer.count # gets the number of buffers
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91 b = Vim::Buffer[n] # gets buffer "n"
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92 cb = Vim::Buffer.current # gets the current buffer
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93 w.height = lines # sets the window height
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94 w.cursor = [row, col] # sets the window cursor position
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95 pos = w.cursor # gets an array [row, col]
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96 name = b.name # gets the buffer file name
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97 line = b[n] # gets a line from the buffer
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98 num = b.count # gets the number of lines
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99 b[n] = str # sets a line in the buffer
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100 b.delete(n) # deletes a line
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101 b.append(n, str) # appends a line after n
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102 line = Vim::Buffer.current.line # gets the current line
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103 num = Vim::Buffer.current.line_number # gets the current line number
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104 Vim::Buffer.current.line = "test" # sets the current line number
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105 <
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106
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107 Module Functions:
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108
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109 *ruby-message*
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110 Vim::message({msg})
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111 Displays the message {msg}.
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112
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113 *ruby-blob*
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114 Vim::blob({arg})
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115 Return |Blob| literal string from {arg}.
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116
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117 *ruby-set_option*
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118 Vim::set_option({arg})
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119 Sets a vim option. {arg} can be any argument that the ":set" command
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120 accepts. Note that this means that no spaces are allowed in the
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121 argument! See |:set|.
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122
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123 *ruby-command*
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124 Vim::command({cmd})
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125 Executes Ex command {cmd}.
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126
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127 *ruby-evaluate*
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128 Vim::evaluate({expr})
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129 Evaluates {expr} using the vim internal expression evaluator (see
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130 |expression|). Returns the expression result as:
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131 - a Integer if the Vim expression evaluates to a number
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132 - a Float if the Vim expression evaluates to a float
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133 - a String if the Vim expression evaluates to a string
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134 - a Array if the Vim expression evaluates to a Vim list
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135 - a Hash if the Vim expression evaluates to a Vim dictionary
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136 Dictionaries and lists are recursively expanded.
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137
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138 ==============================================================================
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139 3. Vim::Buffer objects *ruby-buffer*
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140
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141 Vim::Buffer objects represent vim buffers.
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142
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143 Class Methods:
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144
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145 current Returns the current buffer object.
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146 count Returns the number of buffers.
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147 self[{n}] Returns the buffer object for the number {n}. The first number
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148 is 0.
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149
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150 Methods:
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151
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152 name Returns the full name of the buffer.
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153 number Returns the number of the buffer.
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154 count Returns the number of lines.
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155 length Returns the number of lines.
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156 self[{n}] Returns a line from the buffer. {n} is the line number.
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157 self[{n}] = {str}
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158 Sets a line in the buffer. {n} is the line number.
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159 delete({n}) Deletes a line from the buffer. {n} is the line number.
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160 append({n}, {str})
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161 Appends a line after the line {n}.
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162 line Returns the current line of the buffer if the buffer is
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163 active.
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164 line = {str} Sets the current line of the buffer if the buffer is active.
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165 line_number Returns the number of the current line if the buffer is
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166 active.
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167
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168 ==============================================================================
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169 4. Vim::Window objects *ruby-window*
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170
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171 Vim::Window objects represent vim windows.
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172
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173 Class Methods:
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174
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175 current Returns the current window object.
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176 count Returns the number of windows.
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177 self[{n}] Returns the window object for the number {n}. The first number
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178 is 0.
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179
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180 Methods:
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181
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182 buffer Returns the buffer displayed in the window.
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183 height Returns the height of the window.
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184 height = {n} Sets the window height to {n}.
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185 width Returns the width of the window.
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186 width = {n} Sets the window width to {n}.
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187 cursor Returns a [row, col] array for the cursor position.
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188 First line number is 1 and first column number is 0.
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189 cursor = [{row}, {col}]
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190 Sets the cursor position to {row} and {col}.
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191
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192 ==============================================================================
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193 5. Global variables *ruby-globals*
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194
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195 There are two global variables.
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196
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197 $curwin The current window object.
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198 $curbuf The current buffer object.
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199
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200 ==============================================================================
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201 6. rubyeval() Vim function *ruby-rubyeval*
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202
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203 To facilitate bi-directional interface, you can use |rubyeval()| function to
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204 evaluate Ruby expressions and pass their values to Vim script.
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205
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206 The Ruby value "true", "false" and "nil" are converted to v:true, v:false and
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207 v:null, respectively.
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208
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209 ==============================================================================
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210 7. Dynamic loading *ruby-dynamic*
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211
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212 On MS-Windows and Unix the Ruby library can be loaded dynamically. The
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213 |:version| output then includes |+ruby/dyn|.
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214
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215 This means that Vim will search for the Ruby DLL file or shared library only
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216 when needed. When you don't use the Ruby interface you don't need it, thus
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217 you can use Vim even though this library file is not on your system.
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218
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219
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220 MS-Windows ~
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221
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222 You need to install the right version of Ruby for this to work. You can find
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223 the package to download from:
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224 http://rubyinstaller.org/downloads/
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225 Currently that is rubyinstaller-2.2.5.exe
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226
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227 To use the Ruby interface the Ruby DLL must be in your search path. In a
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228 console window type "path" to see what directories are used. The 'rubydll'
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229 option can be also used to specify the Ruby DLL.
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230
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231 The name of the DLL must match the Ruby version Vim was compiled with.
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232 Currently the name is "msvcrt-ruby220.dll". That is for Ruby 2.2.X. To know
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233 for sure edit "gvim.exe" and search for "ruby\d*.dll\c".
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234
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235 If you want to build Vim with RubyInstaller 1.9 or 2.X using MSVC, you need
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236 some tricks. See the src/INSTALLpc.txt for detail.
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237
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238 If Vim is built with RubyInstaller 2.4 or later, you may also need to add
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239 "C:\Ruby<version>\bin\ruby_builtin_dlls" to the PATH environment variable.
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240
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241
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242 Unix ~
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243
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244 The 'rubydll' option can be used to specify the Ruby shared library file
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245 instead of DYNAMIC_RUBY_DLL file what was specified at compile time. The
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246 version of the shared library must match the Ruby version Vim was compiled
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247 with.
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248
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249 ==============================================================================
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250 vim:tw=78:ts=8:noet:ft=help:norl: