Mercurial > vim
annotate runtime/indent/tex.vim @ 18486:9d887cad7315
Added tag v8.1.2237 for changeset 63ee3c2b140fe1b4801389872a8e47aec19d028b
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Thu, 31 Oct 2019 20:00:04 +0100 |
| parents | cd513458728c |
| children | 74e3316c1d5a |
| rev | line source |
|---|---|
| 13937 | 1 " Vim indent file |
| 2 " Language: LaTeX | |
| 3 " Maintainer: Yichao Zhou <broken.zhou AT gmail.com> | |
| 4 " Created: Sat, 16 Feb 2002 16:50:19 +0100 | |
| 5 " Version: 1.0.0 | |
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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. |
| 3445 | 8 |
| 13937 | 9 " Last Update: {{{ |
| 3445 | 10 " 25th Sep 2002, by LH : |
| 3224 | 11 " (*) better support for the option |
| 12 " (*) use some regex instead of several '||'. | |
| 13 " Oct 9th, 2003, by JT: | |
| 14 " (*) don't change indentation of lines starting with '%' | |
| 3445 | 15 " 2005/06/15, Moshe Kaminsky <kaminsky AT math.huji.ac.il> |
| 3224 | 16 " (*) New variables: |
| 17 " g:tex_items, g:tex_itemize_env, g:tex_noindent_env | |
| 13937 | 18 " 2011/3/6, by Yichao Zhou <broken.zhou AT gmail.com> |
| 3224 | 19 " (*) Don't change indentation of lines starting with '%' |
| 20 " I don't see any code with '%' and it doesn't work properly | |
| 21 " so I add some code. | |
| 22 " (*) New features: Add smartindent-like indent for "{}" and "[]". | |
| 23 " (*) New variables: g:tex_indent_brace | |
| 13937 | 24 " 2011/9/25, by Yichao Zhou <broken.zhou AT gmail.com> |
| 3224 | 25 " (*) Bug fix: smartindent-like indent for "[]" |
| 26 " (*) New features: Align with "&". | |
| 3445 | 27 " (*) New variable: g:tex_indent_and. |
| 13937 | 28 " 2011/10/23 by Yichao Zhou <broken.zhou AT gmail.com> |
| 3224 | 29 " (*) Bug fix: improve the smartindent-like indent for "{}" and |
| 30 " "[]". | |
| 13937 | 31 " 2012/02/27 by Yichao Zhou <broken.zhou AT gmail.com> |
| 3445 | 32 " (*) Bug fix: support default folding marker. |
| 33 " (*) Indent with "&" is not very handy. Make it not enable by | |
| 34 " default. | |
| 13937 | 35 " 2012/03/06 by Yichao Zhou <broken.zhou AT gmail.com> |
| 3445 | 36 " (*) Modify "&" behavior and make it default again. Now "&" |
| 37 " won't align when there are more then one "&" in the previous | |
| 38 " line. | |
| 39 " (*) Add indent "\left(" and "\right)" | |
| 40 " (*) Trust user when in "verbatim" and "lstlisting" | |
| 13937 | 41 " 2012/03/11 by Yichao Zhou <broken.zhou AT gmail.com> |
| 3445 | 42 " (*) Modify "&" so that only indent when current line start with |
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43 " "&". |
| 13937 | 44 " 2012/03/12 by Yichao Zhou <broken.zhou AT gmail.com> |
| 3445 | 45 " (*) Modify indentkeys. |
| 13937 | 46 " 2012/03/18 by Yichao Zhou <broken.zhou AT gmail.com> |
| 3445 | 47 " (*) Add &cpo |
| 13937 | 48 " 2013/05/02 by Yichao Zhou <broken.zhou AT gmail.com> |
| 4437 | 49 " (*) Fix problem about GetTeXIndent checker. Thank Albert Netymk |
| 50 " for reporting this. | |
| 13937 | 51 " 2014/06/23 by Yichao Zhou <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. |
| 13937 | 57 " 2014/08/03 by Yichao Zhou <broken.zhou AT gmail.com> |
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58 " (*) Indent current line if last line has larger indentation |
| 13937 | 59 " 2016/11/08 by Yichao Zhou <broken.zhou AT gmail.com> |
| 60 " (*) Fix problems for \[ and \]. Thanks Bruno for reporting. | |
| 61 " 2017/04/30 by Yichao Zhou <broken.zhou AT gmail.com> | |
| 62 " (*) Fix a bug between g:tex_noindent_env and g:tex_indent_items | |
| 63 " Now g:tex_noindent_env='document\|verbatim\|itemize' (Emacs | |
| 64 " style) is supported. Thanks Miles Wheeler for reporting. | |
| 65 " 2018/02/07 by Yichao Zhou <broken.zhou AT gmail.com> | |
| 66 " (*) Make indentation more smart in the normal mode | |
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67 " |
| 3445 | 68 " }}} |
| 13937 | 69 |
| 70 " Document: {{{ | |
| 71 " | |
| 72 " To set the following options (ok, currently it's just one), add a line like | |
| 73 " let g:tex_indent_items = 1 | |
| 74 " to your ~/.vimrc. | |
| 75 " | |
| 76 " * g:tex_indent_brace | |
| 77 " | |
| 78 " If this variable is unset or non-zero, it will use smartindent-like style | |
| 79 " for "{}" and "[]". Now this only works if the open brace is the last | |
| 80 " character of that line. | |
| 81 " | |
| 82 " % Example 1 | |
| 83 " \usetikzlibrary{ | |
| 84 " external | |
| 85 " } | |
| 86 " | |
| 87 " % Example 2 | |
| 88 " \tikzexternalize[ | |
| 89 " prefix=tikz] | |
| 90 " | |
| 91 " * g:tex_indent_items | |
| 92 " | |
| 93 " If this variable is set, item-environments are indented like Emacs does | |
| 94 " it, i.e., continuation lines are indented with a shiftwidth. | |
| 95 " | |
| 96 " set unset | |
| 97 " ------------------------------------------------------ | |
| 98 " \begin{itemize} \begin{itemize} | |
| 99 " \item blablabla \item blablabla | |
| 100 " bla bla bla bla bla bla | |
| 101 " \item blablabla \item blablabla | |
| 102 " bla bla bla bla bla bla | |
| 103 " \end{itemize} \end{itemize} | |
| 104 " | |
| 105 " | |
| 106 " * g:tex_items | |
| 107 " | |
| 108 " A list of tokens to be considered as commands for the beginning of an item | |
| 109 " command. The tokens should be separated with '\|'. The initial '\' should | |
| 110 " be escaped. The default is '\\bibitem\|\\item'. | |
| 111 " | |
| 112 " * g:tex_itemize_env | |
| 113 " | |
| 114 " A list of environment names, separated with '\|', where the items (item | |
| 115 " commands matching g:tex_items) may appear. The default is | |
| 116 " 'itemize\|description\|enumerate\|thebibliography'. | |
| 117 " | |
| 118 " * g:tex_noindent_env | |
| 119 " | |
| 120 " A list of environment names. separated with '\|', where no indentation is | |
| 121 " required. The default is 'document\|verbatim'. | |
| 122 " }}} | |
| 123 | |
| 124 " Only define the function once | |
| 3224 | 125 if exists("b:did_indent") |
| 126 finish | |
| 127 endif | |
| 3445 | 128 |
| 129 let s:cpo_save = &cpo | |
| 130 set cpo&vim | |
| 13937 | 131 |
| 132 " Define global variable {{{ | |
| 133 | |
| 3224 | 134 let b:did_indent = 1 |
| 135 | |
| 136 if !exists("g:tex_indent_items") | |
| 137 let g:tex_indent_items = 1 | |
| 138 endif | |
| 139 if !exists("g:tex_indent_brace") | |
| 140 let g:tex_indent_brace = 1 | |
| 141 endif | |
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142 if !exists("g:tex_max_scan_line") |
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143 let g:tex_max_scan_line = 60 |
| 3224 | 144 endif |
| 145 if g:tex_indent_items | |
| 146 if !exists("g:tex_itemize_env") | |
| 147 let g:tex_itemize_env = 'itemize\|description\|enumerate\|thebibliography' | |
| 148 endif | |
| 149 if !exists('g:tex_items') | |
| 13937 | 150 let g:tex_items = '\\bibitem\|\\item' |
| 3224 | 151 endif |
| 152 else | |
| 153 let g:tex_items = '' | |
| 154 endif | |
| 155 | |
| 156 if !exists("g:tex_noindent_env") | |
| 157 let g:tex_noindent_env = 'document\|verbatim\|lstlisting' | |
| 3445 | 158 endif "}}} |
| 13937 | 159 |
| 160 " VIM Setting " {{{ | |
| 3224 | 161 setlocal autoindent |
| 162 setlocal nosmartindent | |
| 163 setlocal indentexpr=GetTeXIndent() | |
| 3445 | 164 setlocal indentkeys& |
| 165 exec 'setlocal indentkeys+=[,(,{,),},],\&' . substitute(g:tex_items, '^\|\(\\|\)', ',=', 'g') | |
| 166 let g:tex_items = '^\s*' . substitute(g:tex_items, '^\(\^\\s\*\)*', '', '') | |
| 13937 | 167 " }}} |
| 13912 | 168 |
| 13937 | 169 function! GetTeXIndent() " {{{ |
| 3224 | 170 " Find a non-blank line above the current line. |
| 171 let lnum = prevnonblank(v:lnum - 1) | |
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172 let cnum = v:lnum |
| 3224 | 173 |
| 174 " Comment line is not what we need. | |
| 175 while lnum != 0 && getline(lnum) =~ '^\s*%' | |
| 176 let lnum = prevnonblank(lnum - 1) | |
| 177 endwhile | |
| 178 | |
| 179 " At the start of the file use zero indent. | |
| 180 if lnum == 0 | |
| 13937 | 181 return 0 |
| 3224 | 182 endif |
| 183 | |
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184 let line = substitute(getline(lnum), '\s*%.*', '','g') " last line |
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185 let cline = substitute(getline(v:lnum), '\s*%.*', '', 'g') " current line |
| 3224 | 186 |
| 3445 | 187 " We are in verbatim, so do what our user what. |
| 188 if synIDattr(synID(v:lnum, indent(v:lnum), 1), "name") == "texZone" | |
| 189 if empty(cline) | |
| 190 return indent(lnum) | |
| 191 else | |
| 192 return indent(v:lnum) | |
| 193 end | |
| 194 endif | |
| 13937 | 195 |
| 3224 | 196 if lnum == 0 |
| 13937 | 197 return 0 |
| 3224 | 198 endif |
| 199 | |
| 200 let ind = indent(lnum) | |
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201 let stay = 1 |
| 3224 | 202 |
| 203 " New code for comment: retain the indent of current line | |
| 204 if cline =~ '^\s*%' | |
| 205 return indent(v:lnum) | |
| 206 endif | |
| 207 | |
| 13937 | 208 " Add a 'shiftwidth' after beginning of environments. |
| 209 " Don't add it for \begin{document} and \begin{verbatim} | |
| 210 " if line =~ '^\s*\\begin{\(.*\)}' && line !~ 'verbatim' | |
| 211 " LH modification : \begin does not always start a line | |
| 212 " ZYC modification : \end after \begin won't cause wrong indent anymore | |
| 213 if line =~ '\\begin{.*}' | |
| 214 if line !~ g:tex_noindent_env | |
| 215 let ind = ind + shiftwidth() | |
| 216 let stay = 0 | |
| 217 endif | |
| 3224 | 218 |
| 219 if g:tex_indent_items | |
| 220 " Add another sw for item-environments | |
| 221 if line =~ g:tex_itemize_env | |
| 11518 | 222 let ind = ind + shiftwidth() |
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223 let stay = 0 |
| 3224 | 224 endif |
| 225 endif | |
| 226 endif | |
| 227 | |
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228 if cline =~ '\\end{.*}' |
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229 let retn = s:GetEndIndentation(v:lnum) |
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230 if retn != -1 |
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231 return retn |
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232 endif |
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233 end |
| 3224 | 234 " Subtract a 'shiftwidth' when an environment ends |
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235 if cline =~ '\\end{.*}' |
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236 \ && cline !~ g:tex_noindent_env |
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237 \ && cline !~ '\\begin{.*}.*\\end{.*}' |
| 3224 | 238 if g:tex_indent_items |
| 239 " Remove another sw for item-environments | |
| 240 if cline =~ g:tex_itemize_env | |
| 11518 | 241 let ind = ind - shiftwidth() |
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242 let stay = 0 |
| 3224 | 243 endif |
| 244 endif | |
| 245 | |
| 11518 | 246 let ind = ind - shiftwidth() |
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247 let stay = 0 |
| 3224 | 248 endif |
| 249 | |
| 250 if g:tex_indent_brace | |
| 13937 | 251 if line =~ '[[{]$' |
| 11518 | 252 let ind += shiftwidth() |
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253 let stay = 0 |
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254 endif |
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255 |
| 13937 | 256 if cline =~ '^\s*\\\?[\]}]' && s:CheckPairedIsLastCharacter(v:lnum, indent(v:lnum)) |
| 11518 | 257 let ind -= shiftwidth() |
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258 let stay = 0 |
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259 endif |
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260 |
| 13937 | 261 if line !~ '^\s*\\\?[\]}]' |
| 262 for i in range(indent(lnum)+1, strlen(line)-1) | |
| 263 let char = line[i] | |
| 264 if char == ']' || char == '}' | |
| 265 if s:CheckPairedIsLastCharacter(lnum, i) | |
| 266 let ind -= shiftwidth() | |
| 267 let stay = 0 | |
| 268 endif | |
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269 endif |
| 13937 | 270 endfor |
| 271 endif | |
| 3445 | 272 endif |
| 3224 | 273 |
| 274 " Special treatment for 'item' | |
| 275 " ---------------------------- | |
| 276 | |
| 277 if g:tex_indent_items | |
| 278 " '\item' or '\bibitem' itself: | |
| 279 if cline =~ g:tex_items | |
| 11518 | 280 let ind = ind - shiftwidth() |
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281 let stay = 0 |
| 3224 | 282 endif |
| 283 " lines following to '\item' are intented once again: | |
| 284 if line =~ g:tex_items | |
| 11518 | 285 let ind = ind + shiftwidth() |
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286 let stay = 0 |
| 3224 | 287 endif |
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288 endif |
| 3224 | 289 |
| 13937 | 290 if stay && mode() == 'i' |
| 291 " If there is no obvious indentation hint, and indentation is triggered | |
| 292 " in insert mode, we trust our user. | |
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293 if empty(cline) |
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294 return ind |
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295 else |
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296 return max([indent(v:lnum), s:GetLastBeginIndentation(v:lnum)]) |
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297 endif |
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298 else |
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299 return ind |
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300 endif |
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301 endfunction "}}} |
| 13937 | 302 |
| 303 function! s:GetLastBeginIndentation(lnum) " {{{ | |
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304 let matchend = 1 |
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305 for lnum in range(a:lnum-1, max([a:lnum - g:tex_max_scan_line, 1]), -1) |
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306 let line = getline(lnum) |
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307 if line =~ '\\end{.*}' |
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308 let matchend += 1 |
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309 endif |
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310 if line =~ '\\begin{.*}' |
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311 let matchend -= 1 |
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312 endif |
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313 if matchend == 0 |
| 13937 | 314 if line =~ g:tex_noindent_env |
| 315 return indent(lnum) | |
| 316 endif | |
| 13912 | 317 if line =~ g:tex_itemize_env |
| 318 return indent(lnum) + 2 * shiftwidth() | |
| 319 endif | |
| 11518 | 320 return indent(lnum) + shiftwidth() |
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321 endif |
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322 endfor |
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323 return -1 |
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324 endfunction |
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325 |
| 13937 | 326 function! s:GetEndIndentation(lnum) " {{{ |
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327 if getline(a:lnum) =~ '\\begin{.*}.*\\end{.*}' |
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328 return -1 |
| 3224 | 329 endif |
| 330 | |
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331 let min_indent = 100 |
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332 let matchend = 1 |
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333 for lnum in range(a:lnum-1, max([a:lnum-g:tex_max_scan_line, 1]), -1) |
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334 let line = getline(lnum) |
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335 if line =~ '\\end{.*}' |
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336 let matchend += 1 |
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337 endif |
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338 if line =~ '\\begin{.*}' |
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339 let matchend -= 1 |
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340 endif |
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341 if matchend == 0 |
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342 return indent(lnum) |
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343 endif |
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344 if !empty(line) |
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345 let min_indent = min([min_indent, indent(lnum)]) |
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346 endif |
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347 endfor |
| 11518 | 348 return min_indent - shiftwidth() |
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349 endfunction |
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350 |
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351 " Most of the code is from matchparen.vim |
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352 function! s:CheckPairedIsLastCharacter(lnum, col) "{{{ |
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353 let c_lnum = a:lnum |
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354 let c_col = a:col+1 |
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355 |
| 13937 | 356 let line = getline(c_lnum) |
| 357 if line[c_col-1] == '\' | |
| 358 let c_col = c_col + 1 | |
| 359 endif | |
| 360 let c = line[c_col-1] | |
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361 |
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362 let plist = split(&matchpairs, '.\zs[:,]') |
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363 let i = index(plist, c) |
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364 if i < 0 |
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365 return 0 |
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366 endif |
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367 |
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368 " Figure out the arguments for searchpairpos(). |
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369 if i % 2 == 0 |
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370 let s_flags = 'nW' |
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371 let c2 = plist[i + 1] |
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372 else |
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373 let s_flags = 'nbW' |
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374 let c2 = c |
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375 let c = plist[i - 1] |
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376 endif |
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377 if c == '[' |
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378 let c = '\[' |
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379 let c2 = '\]' |
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380 endif |
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381 |
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382 " Find the match. When it was just before the cursor move it there for a |
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383 " moment. |
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384 let save_cursor = winsaveview() |
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385 call cursor(c_lnum, c_col) |
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386 |
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387 " When not in a string or comment ignore matches inside them. |
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388 " We match "escape" for special items, such as lispEscapeSpecial. |
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389 let s_skip ='synIDattr(synID(line("."), col("."), 0), "name") ' . |
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390 \ '=~? "string\\|character\\|singlequote\\|escape\\|comment"' |
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391 execute 'if' s_skip '| let s_skip = 0 | endif' |
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392 |
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393 let stopline = max([0, c_lnum - g:tex_max_scan_line]) |
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394 |
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395 " Limit the search time to 300 msec to avoid a hang on very long lines. |
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396 " This fails when a timeout is not supported. |
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commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
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diff
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397 try |
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1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
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398 let [m_lnum, m_col] = searchpairpos(c, '', c2, s_flags, s_skip, stopline, 100) |
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1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
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399 catch /E118/ |
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1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
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400 endtry |
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1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
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401 |
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1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
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402 call winrestview(save_cursor) |
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1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
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403 |
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1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
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404 if m_lnum > 0 |
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1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
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405 let line = getline(m_lnum) |
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1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
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406 return strlen(line) == m_col |
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1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
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407 endif |
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1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
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408 |
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1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
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409 return 0 |
| 13937 | 410 endfunction "}}} |
| 411 | |
| 3237 | 412 let &cpo = s:cpo_save |
| 413 unlet s:cpo_save | |
| 414 | |
| 3224 | 415 " vim: set sw=4 textwidth=80: |