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annotate runtime/indent/tex.vim @ 8625:d98fbc8dca8e v7.4.1602

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commit https://github.com/vim/vim/commit/cff572abb922d49455b01484e99b98c371fa4560 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 19 16:24:14 2016 +0100 patch 7.4.1602 Problem: Info files take space in the top directory. Solution: Move them to "READMEdir".
author Christian Brabandt <cb@256bit.org>
date Sat, 19 Mar 2016 16:30:04 +0100
parents 1bf1b88968a2
children d183d629509e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 " Vim indent file
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2 " Language: LaTeX
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3 " Maintainer: YiChao Zhou <broken.zhou AT gmail.com>
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4 " Created: Sat, 16 Feb 2002 16:50:19 +0100
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5 " Version: 0.9.2
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6 " Please email me if you found something I can do. Comments, bug report and
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7 " feature request are welcome.
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8
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9 " Last Update: {{{
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10 " 25th Sep 2002, by LH :
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11 " (*) better support for the option
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12 " (*) use some regex instead of several '||'.
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13 " Oct 9th, 2003, by JT:
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14 " (*) don't change indentation of lines starting with '%'
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15 " 2005/06/15, Moshe Kaminsky <kaminsky AT math.huji.ac.il>
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16 " (*) New variables:
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17 " g:tex_items, g:tex_itemize_env, g:tex_noindent_env
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18 " 2011/3/6, by Zhou YiChao <broken.zhou AT gmail.com>
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19 " (*) Don't change indentation of lines starting with '%'
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20 " I don't see any code with '%' and it doesn't work properly
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21 " so I add some code.
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22 " (*) New features: Add smartindent-like indent for "{}" and "[]".
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23 " (*) New variables: g:tex_indent_brace
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24 " 2011/9/25, by Zhou Yichao <broken.zhou AT gmail.com>
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25 " (*) Bug fix: smartindent-like indent for "[]"
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26 " (*) New features: Align with "&".
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27 " (*) New variable: g:tex_indent_and.
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28 " 2011/10/23 by Zhou Yichao <broken.zhou AT gmail.com>
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29 " (*) Bug fix: improve the smartindent-like indent for "{}" and
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30 " "[]".
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31 " 2012/02/27 by Zhou Yichao <broken.zhou AT gmail.com>
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32 " (*) Bug fix: support default folding marker.
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33 " (*) Indent with "&" is not very handy. Make it not enable by
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34 " default.
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35 " 2012/03/06 by Zhou Yichao <broken.zhou AT gmail.com>
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36 " (*) Modify "&" behavior and make it default again. Now "&"
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37 " won't align when there are more then one "&" in the previous
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38 " line.
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39 " (*) Add indent "\left(" and "\right)"
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40 " (*) Trust user when in "verbatim" and "lstlisting"
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41 " 2012/03/11 by Zhou Yichao <broken.zhou AT gmail.com>
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42 " (*) Modify "&" so that only indent when current line start with
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43 " "&".
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44 " 2012/03/12 by Zhou Yichao <broken.zhou AT gmail.com>
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45 " (*) Modify indentkeys.
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46 " 2012/03/18 by Zhou Yichao <broken.zhou AT gmail.com>
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47 " (*) Add &cpo
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48 " 2013/05/02 by Zhou Yichao <broken.zhou AT gmail.com>
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49 " (*) Fix problem about GetTeXIndent checker. Thank Albert Netymk
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50 " for reporting this.
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51 " 2014/06/23 by Zhou Yichao <broken.zhou AT gmail.com>
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52 " (*) Remove the feature g:tex_indent_and because it is buggy.
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53 " (*) If there is not any obvious indentation hints, we do not
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54 " alert our user's current indentation.
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55 " (*) g:tex_indent_brace now only works if the open brace is the
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56 " last character of that line.
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57 " 2014/08/03 by Zhou Yichao <broken.zhou AT gmail.com>
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58 " (*) Indent current line if last line has larger indentation
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59 " 2014/08/09 by Zhou Yichao <broken.zhou AT gmail.com>
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60 " (*) Add missing return value for s:GetEndIndentation(...)
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61 "
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62 " }}}
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63
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64 " Document: {{{
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65 "
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66 " To set the following options (ok, currently it's just one), add a line like
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67 " let g:tex_indent_items = 1
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68 " to your ~/.vimrc.
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69 "
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70 " * g:tex_indent_brace
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71 "
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72 " If this variable is unset or non-zero, it will use smartindent-like style
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73 " for "{}" and "[]". Now this only works if the open brace is the last
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74 " character of that line.
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75 "
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76 " % Example 1
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77 " \usetikzlibrary{
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78 " external
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79 " }
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80 "
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81 " % Example 2
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82 " \tikzexternalize[
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83 " prefix=tikz]
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84 "
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85 " * g:tex_indent_items
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86 "
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87 " If this variable is set, item-environments are indented like Emacs does
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88 " it, i.e., continuation lines are indented with a shiftwidth.
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89 "
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90 " NOTE: I've already set the variable below; delete the corresponding line
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91 " if you don't like this behaviour.
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92 "
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93 " Per default, it is unset.
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94 "
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95 " set unset
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96 " ----------------------------------------------------------------
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97 " \begin{itemize} \begin{itemize}
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98 " \item blablabla \item blablabla
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99 " bla bla bla bla bla bla
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100 " \item blablabla \item blablabla
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101 " bla bla bla bla bla bla
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102 " \end{itemize} \end{itemize}
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103 "
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104 "
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105 " * g:tex_items
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106 "
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107 " A list of tokens to be considered as commands for the beginning of an item
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108 " command. The tokens should be separated with '\|'. The initial '\' should
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109 " be escaped. The default is '\\bibitem\|\\item'.
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110 "
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111 " * g:tex_itemize_env
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112 "
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113 " A list of environment names, separated with '\|', where the items (item
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114 " commands matching g:tex_items) may appear. The default is
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115 " 'itemize\|description\|enumerate\|thebibliography'.
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116 "
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117 " * g:tex_noindent_env
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118 "
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119 " A list of environment names. separated with '\|', where no indentation is
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120 " required. The default is 'document\|verbatim'.
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121 " }}}
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122
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123 " Only define the function once
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124 if exists("b:did_indent")
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125 finish
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126 endif
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127
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128 let s:cpo_save = &cpo
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129 set cpo&vim
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130
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131 " Define global variable {{{
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132
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133 let b:did_indent = 1
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134
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135 if !exists("g:tex_indent_items")
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136 let g:tex_indent_items = 1
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137 endif
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138 if !exists("g:tex_indent_brace")
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139 let g:tex_indent_brace = 1
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140 endif
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141 if !exists("g:tex_max_scan_line")
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142 let g:tex_max_scan_line = 60
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143 endif
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144 if g:tex_indent_items
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145 if !exists("g:tex_itemize_env")
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146 let g:tex_itemize_env = 'itemize\|description\|enumerate\|thebibliography'
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147 endif
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148 if !exists('g:tex_items')
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149 let g:tex_items = '\\bibitem\|\\item'
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150 endif
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151 else
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152 let g:tex_items = ''
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153 endif
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154
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155 if !exists("g:tex_noindent_env")
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156 let g:tex_noindent_env = 'document\|verbatim\|lstlisting'
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157 endif "}}}
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158
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159 " VIM Setting " {{{
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160 setlocal autoindent
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161 setlocal nosmartindent
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162 setlocal indentexpr=GetTeXIndent()
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163 setlocal indentkeys&
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164 exec 'setlocal indentkeys+=[,(,{,),},],\&' . substitute(g:tex_items, '^\|\(\\|\)', ',=', 'g')
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165 let g:tex_items = '^\s*' . substitute(g:tex_items, '^\(\^\\s\*\)*', '', '')
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166 " }}}
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167
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168 function! GetTeXIndent() " {{{
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169 " Find a non-blank line above the current line.
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170 let lnum = prevnonblank(v:lnum - 1)
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171 let cnum = v:lnum
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172
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173 " Comment line is not what we need.
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174 while lnum != 0 && getline(lnum) =~ '^\s*%'
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175 let lnum = prevnonblank(lnum - 1)
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176 endwhile
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177
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178 " At the start of the file use zero indent.
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179 if lnum == 0
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180 return 0
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181 endif
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182
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183 let line = substitute(getline(lnum), '\s*%.*', '','g') " last line
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184 let cline = substitute(getline(v:lnum), '\s*%.*', '', 'g') " current line
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185
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186 " We are in verbatim, so do what our user what.
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187 if synIDattr(synID(v:lnum, indent(v:lnum), 1), "name") == "texZone"
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188 if empty(cline)
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189 return indent(lnum)
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190 else
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191 return indent(v:lnum)
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192 end
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193 endif
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194
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195 if lnum == 0
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196 return 0
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197 endif
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198
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199 let ind = indent(lnum)
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200 let stay = 1
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201
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202 " New code for comment: retain the indent of current line
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203 if cline =~ '^\s*%'
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204 return indent(v:lnum)
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205 endif
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206
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207 " Add a 'shiftwidth' after beginning of environments.
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208 " Don't add it for \begin{document} and \begin{verbatim}
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209 ""if line =~ '^\s*\\begin{\(.*\)}' && line !~ 'verbatim'
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210 " LH modification : \begin does not always start a line
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211 " ZYC modification : \end after \begin won't cause wrong indent anymore
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212 if line =~ '\\begin{.*}' && line !~ g:tex_noindent_env
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213 let ind = ind + &sw
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214 let stay = 0
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215
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216 if g:tex_indent_items
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217 " Add another sw for item-environments
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218 if line =~ g:tex_itemize_env
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219 let ind = ind + &sw
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220 let stay = 0
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221 endif
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222 endif
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223 endif
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224
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225 if cline =~ '\\end{.*}'
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226 let retn = s:GetEndIndentation(v:lnum)
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227 if retn != -1
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228 return retn
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229 endif
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230 end
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231 " Subtract a 'shiftwidth' when an environment ends
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232 if cline =~ '\\end{.*}'
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233 \ && cline !~ g:tex_noindent_env
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234 \ && cline !~ '\\begin{.*}.*\\end{.*}'
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235 if g:tex_indent_items
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236 " Remove another sw for item-environments
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237 if cline =~ g:tex_itemize_env
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238 let ind = ind - &sw
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239 let stay = 0
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240 endif
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241 endif
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242
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243 let ind = ind - &sw
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244 let stay = 0
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245 endif
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246
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247 if g:tex_indent_brace
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248 let char = line[strlen(line)-1]
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249 if char == '[' || char == '{'
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250 let ind += &sw
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251 let stay = 0
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252 endif
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253
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254 let cind = indent(v:lnum)
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255 let char = cline[cind]
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256 if (char == ']' || char == '}') &&
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257 \ s:CheckPairedIsLastCharacter(v:lnum, cind)
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258 let ind -= &sw
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259 let stay = 0
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260 endif
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261
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262 for i in range(indent(lnum)+1, strlen(line)-1)
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263 let char = line[i]
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264 if char == ']' || char == '}'
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265 if s:CheckPairedIsLastCharacter(lnum, i)
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266 let ind -= &sw
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267 let stay = 0
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268 endif
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269 endif
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270 endfor
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271 endif
3224
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272
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273 " Special treatment for 'item'
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274 " ----------------------------
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275
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276 if g:tex_indent_items
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277 " '\item' or '\bibitem' itself:
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278 if cline =~ g:tex_items
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279 let ind = ind - &sw
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280 let stay = 0
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281 endif
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282 " lines following to '\item' are intented once again:
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283 if line =~ g:tex_items
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284 let ind = ind + &sw
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285 let stay = 0
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286 endif
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287 endif
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288
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289 if stay
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290 " If there is no obvious indentation hint, we trust our user.
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291 if empty(cline)
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292 return ind
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293 else
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294 return max([indent(v:lnum), s:GetLastBeginIndentation(v:lnum)])
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295 endif
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296 else
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297 return ind
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298 endif
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299 endfunction "}}}
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300
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301 function! s:GetLastBeginIndentation(lnum) " {{{
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302 let matchend = 1
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303 for lnum in range(a:lnum-1, max([a:lnum - g:tex_max_scan_line, 1]), -1)
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304 let line = getline(lnum)
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305 if line =~ '\\end{.*}'
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306 let matchend += 1
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307 endif
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308 if line =~ '\\begin{.*}'
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309 let matchend -= 1
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310 endif
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311 if matchend == 0
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312 if line =~ g:tex_itemize_env
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313 return indent(lnum) + 2 * &sw
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314 endif
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315 if line =~ g:tex_noindent_env
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316 return indent(lnum)
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317 endif
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318 return indent(lnum) + &sw
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319 endif
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320 endfor
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321 return -1
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322 endfunction
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323
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324 function! s:GetEndIndentation(lnum) " {{{
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325 if getline(a:lnum) =~ '\\begin{.*}.*\\end{.*}'
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326 return -1
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327 endif
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328
8392
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329 let min_indent = 100
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330 let matchend = 1
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331 for lnum in range(a:lnum-1, max([a:lnum-g:tex_max_scan_line, 1]), -1)
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332 let line = getline(lnum)
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333 if line =~ '\\end{.*}'
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334 let matchend += 1
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335 endif
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336 if line =~ '\\begin{.*}'
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337 let matchend -= 1
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338 endif
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339 if matchend == 0
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340 return indent(lnum)
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341 endif
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342 if !empty(line)
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343 let min_indent = min([min_indent, indent(lnum)])
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344 endif
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345 endfor
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346 return min_indent - &sw
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347 endfunction
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348
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349 " Most of the code is from matchparen.vim
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350 function! s:CheckPairedIsLastCharacter(lnum, col) "{{{
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351 " Get the character under the cursor and check if it's in 'matchpairs'.
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352 let c_lnum = a:lnum
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353 let c_col = a:col+1
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354
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355
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356 let c = getline(c_lnum)[c_col-1]
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357 let plist = split(&matchpairs, '.\zs[:,]')
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358 let i = index(plist, c)
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diff changeset
359 if i < 0
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360 return 0
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361 endif
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diff changeset
362
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363 " Figure out the arguments for searchpairpos().
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diff changeset
364 if i % 2 == 0
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365 let s_flags = 'nW'
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366 let c2 = plist[i + 1]
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367 else
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368 let s_flags = 'nbW'
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369 let c2 = c
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370 let c = plist[i - 1]
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371 endif
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diff changeset
372 if c == '['
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diff changeset
373 let c = '\['
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374 let c2 = '\]'
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375 endif
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376
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377 " Find the match. When it was just before the cursor move it there for a
1bf1b88968a2 commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
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378 " moment.
1bf1b88968a2 commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
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379 let save_cursor = winsaveview()
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380 call cursor(c_lnum, c_col)
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381
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382 " When not in a string or comment ignore matches inside them.
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383 " We match "escape" for special items, such as lispEscapeSpecial.
1bf1b88968a2 commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
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384 let s_skip ='synIDattr(synID(line("."), col("."), 0), "name") ' .
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385 \ '=~? "string\\|character\\|singlequote\\|escape\\|comment"'
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386 execute 'if' s_skip '| let s_skip = 0 | endif'
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387
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388 let stopline = max([0, c_lnum - g:tex_max_scan_line])
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389
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390 " Limit the search time to 300 msec to avoid a hang on very long lines.
1bf1b88968a2 commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
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391 " This fails when a timeout is not supported.
1bf1b88968a2 commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
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392 try
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393 let [m_lnum, m_col] = searchpairpos(c, '', c2, s_flags, s_skip, stopline, 100)
1bf1b88968a2 commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
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394 catch /E118/
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395 endtry
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396
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397 call winrestview(save_cursor)
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398
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399 if m_lnum > 0
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400 let line = getline(m_lnum)
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401 return strlen(line) == m_col
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402 endif
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403
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404 return 0
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405 endfunction "}}}
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406
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407 let &cpo = s:cpo_save
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408 unlet s:cpo_save
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409
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410 " vim: set sw=4 textwidth=80: