Mercurial > vim
annotate runtime/indent/tex.vim @ 31231:684e6dfa2fba v9.0.0949
patch 9.0.0949: crash when unletting a variable while listing variables
Commit: https://github.com/vim/vim/commit/ef2c325f5e3c437b722bb96bf369ba2a5c541163
Author: Bram Moolenaar <Bram@vim.org>
Date: Fri Nov 25 16:31:51 2022 +0000
patch 9.0.0949: crash when unletting a variable while listing variables
Problem: Crash when unletting a variable while listing variables.
Solution: Disallow changing a hashtable while going over the entries.
(closes #11435)
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Fri, 25 Nov 2022 17:45:04 +0100 |
| parents | 11b656e74444 |
| children | 5c220cf30f1f |
| 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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commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
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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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commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
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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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commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
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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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commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
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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 | |
| 20552 | 67 " 2020/04/26 by Yichao Zhou <broken.zhou AT gmail.com> |
| 68 " (*) Fix a bug related to \[ & \]. Thanks Manuel Boni for | |
| 69 " reporting. | |
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commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
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70 " |
| 3445 | 71 " }}} |
| 13937 | 72 |
| 73 " Document: {{{ | |
| 74 " | |
| 20552 | 75 " For proper latex experience, please put |
| 76 " let g:tex_flavor = "latex" | |
| 77 " into your vimrc. | |
| 13937 | 78 " |
| 79 " * g:tex_indent_brace | |
| 80 " | |
| 81 " If this variable is unset or non-zero, it will use smartindent-like style | |
| 82 " for "{}" and "[]". Now this only works if the open brace is the last | |
| 83 " character of that line. | |
| 84 " | |
| 85 " % Example 1 | |
| 86 " \usetikzlibrary{ | |
| 87 " external | |
| 88 " } | |
| 89 " | |
| 90 " % Example 2 | |
| 91 " \tikzexternalize[ | |
| 92 " prefix=tikz] | |
| 93 " | |
| 94 " * g:tex_indent_items | |
| 95 " | |
| 96 " If this variable is set, item-environments are indented like Emacs does | |
| 97 " it, i.e., continuation lines are indented with a shiftwidth. | |
| 98 " | |
| 99 " set unset | |
| 100 " ------------------------------------------------------ | |
| 101 " \begin{itemize} \begin{itemize} | |
| 102 " \item blablabla \item blablabla | |
| 103 " bla bla bla bla bla bla | |
| 104 " \item blablabla \item blablabla | |
| 105 " bla bla bla bla bla bla | |
| 106 " \end{itemize} \end{itemize} | |
| 107 " | |
| 108 " | |
| 109 " * g:tex_items | |
| 110 " | |
| 111 " A list of tokens to be considered as commands for the beginning of an item | |
| 112 " command. The tokens should be separated with '\|'. The initial '\' should | |
| 113 " be escaped. The default is '\\bibitem\|\\item'. | |
| 114 " | |
| 115 " * g:tex_itemize_env | |
| 116 " | |
| 117 " A list of environment names, separated with '\|', where the items (item | |
| 118 " commands matching g:tex_items) may appear. The default is | |
| 119 " 'itemize\|description\|enumerate\|thebibliography'. | |
| 120 " | |
| 121 " * g:tex_noindent_env | |
| 122 " | |
| 123 " A list of environment names. separated with '\|', where no indentation is | |
| 124 " required. The default is 'document\|verbatim'. | |
| 125 " }}} | |
| 126 | |
| 127 " Only define the function once | |
| 3224 | 128 if exists("b:did_indent") |
| 129 finish | |
| 130 endif | |
| 3445 | 131 |
| 132 let s:cpo_save = &cpo | |
| 133 set cpo&vim | |
| 13937 | 134 |
| 135 " Define global variable {{{ | |
| 136 | |
| 3224 | 137 let b:did_indent = 1 |
| 138 | |
| 139 if !exists("g:tex_indent_items") | |
| 140 let g:tex_indent_items = 1 | |
| 141 endif | |
| 142 if !exists("g:tex_indent_brace") | |
| 143 let g:tex_indent_brace = 1 | |
| 144 endif | |
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145 if !exists("g:tex_max_scan_line") |
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146 let g:tex_max_scan_line = 60 |
| 3224 | 147 endif |
| 148 if g:tex_indent_items | |
| 149 if !exists("g:tex_itemize_env") | |
| 150 let g:tex_itemize_env = 'itemize\|description\|enumerate\|thebibliography' | |
| 151 endif | |
| 152 if !exists('g:tex_items') | |
| 13937 | 153 let g:tex_items = '\\bibitem\|\\item' |
| 3224 | 154 endif |
| 155 else | |
| 156 let g:tex_items = '' | |
| 157 endif | |
| 158 | |
| 159 if !exists("g:tex_noindent_env") | |
| 160 let g:tex_noindent_env = 'document\|verbatim\|lstlisting' | |
| 3445 | 161 endif "}}} |
| 13937 | 162 |
| 163 " VIM Setting " {{{ | |
| 3224 | 164 setlocal autoindent |
| 165 setlocal nosmartindent | |
| 166 setlocal indentexpr=GetTeXIndent() | |
| 3445 | 167 setlocal indentkeys& |
| 168 exec 'setlocal indentkeys+=[,(,{,),},],\&' . substitute(g:tex_items, '^\|\(\\|\)', ',=', 'g') | |
| 169 let g:tex_items = '^\s*' . substitute(g:tex_items, '^\(\^\\s\*\)*', '', '') | |
| 13937 | 170 " }}} |
| 13912 | 171 |
| 13937 | 172 function! GetTeXIndent() " {{{ |
| 3224 | 173 " Find a non-blank line above the current line. |
| 174 let lnum = prevnonblank(v:lnum - 1) | |
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175 let cnum = v:lnum |
| 3224 | 176 |
| 177 " Comment line is not what we need. | |
| 178 while lnum != 0 && getline(lnum) =~ '^\s*%' | |
| 179 let lnum = prevnonblank(lnum - 1) | |
| 180 endwhile | |
| 181 | |
| 182 " At the start of the file use zero indent. | |
| 183 if lnum == 0 | |
| 13937 | 184 return 0 |
| 3224 | 185 endif |
| 186 | |
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187 let line = substitute(getline(lnum), '\s*%.*', '','g') " last line |
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188 let cline = substitute(getline(v:lnum), '\s*%.*', '', 'g') " current line |
| 3224 | 189 |
| 20552 | 190 let ccol = 1 |
| 191 while cline[ccol] =~ '\s' | |
| 192 let ccol += 1 | |
| 193 endwhile | |
| 194 | |
| 3445 | 195 " We are in verbatim, so do what our user what. |
| 20552 | 196 if synIDattr(synID(v:lnum, ccol, 1), "name") == "texZone" |
| 3445 | 197 if empty(cline) |
| 198 return indent(lnum) | |
| 199 else | |
| 200 return indent(v:lnum) | |
| 20552 | 201 endif |
| 3445 | 202 endif |
| 13937 | 203 |
| 3224 | 204 if lnum == 0 |
| 13937 | 205 return 0 |
| 3224 | 206 endif |
| 207 | |
| 208 let ind = indent(lnum) | |
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209 let stay = 1 |
| 3224 | 210 |
| 211 " New code for comment: retain the indent of current line | |
| 212 if cline =~ '^\s*%' | |
| 213 return indent(v:lnum) | |
| 214 endif | |
| 215 | |
| 13937 | 216 " Add a 'shiftwidth' after beginning of environments. |
| 217 " Don't add it for \begin{document} and \begin{verbatim} | |
| 218 " if line =~ '^\s*\\begin{\(.*\)}' && line !~ 'verbatim' | |
| 219 " LH modification : \begin does not always start a line | |
| 220 " ZYC modification : \end after \begin won't cause wrong indent anymore | |
| 221 if line =~ '\\begin{.*}' | |
| 222 if line !~ g:tex_noindent_env | |
| 223 let ind = ind + shiftwidth() | |
| 224 let stay = 0 | |
| 225 endif | |
| 3224 | 226 |
| 227 if g:tex_indent_items | |
| 228 " Add another sw for item-environments | |
| 229 if line =~ g:tex_itemize_env | |
| 11518 | 230 let ind = ind + shiftwidth() |
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231 let stay = 0 |
| 3224 | 232 endif |
| 233 endif | |
| 234 endif | |
| 235 | |
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236 if cline =~ '\\end{.*}' |
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237 let retn = s:GetEndIndentation(v:lnum) |
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238 if retn != -1 |
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239 return retn |
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240 endif |
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241 end |
| 3224 | 242 " Subtract a 'shiftwidth' when an environment ends |
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243 if cline =~ '\\end{.*}' |
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244 \ && cline !~ g:tex_noindent_env |
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245 \ && cline !~ '\\begin{.*}.*\\end{.*}' |
| 3224 | 246 if g:tex_indent_items |
| 247 " Remove another sw for item-environments | |
| 248 if cline =~ g:tex_itemize_env | |
| 11518 | 249 let ind = ind - shiftwidth() |
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250 let stay = 0 |
| 3224 | 251 endif |
| 252 endif | |
| 253 | |
| 11518 | 254 let ind = ind - shiftwidth() |
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255 let stay = 0 |
| 3224 | 256 endif |
| 257 | |
| 258 if g:tex_indent_brace | |
| 13937 | 259 if line =~ '[[{]$' |
| 11518 | 260 let ind += shiftwidth() |
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261 let stay = 0 |
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262 endif |
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263 |
| 20552 | 264 if cline =~ '^\s*\\\?[\]}]' && s:CheckPairedIsLastCharacter(v:lnum, ccol) |
| 11518 | 265 let ind -= shiftwidth() |
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266 let stay = 0 |
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267 endif |
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268 |
| 13937 | 269 if line !~ '^\s*\\\?[\]}]' |
| 20552 | 270 for i in range(1, strlen(line)-1) |
| 13937 | 271 let char = line[i] |
| 272 if char == ']' || char == '}' | |
| 273 if s:CheckPairedIsLastCharacter(lnum, i) | |
| 274 let ind -= shiftwidth() | |
| 275 let stay = 0 | |
| 276 endif | |
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277 endif |
| 13937 | 278 endfor |
| 279 endif | |
| 3445 | 280 endif |
| 3224 | 281 |
| 282 " Special treatment for 'item' | |
| 283 " ---------------------------- | |
| 284 | |
| 285 if g:tex_indent_items | |
| 286 " '\item' or '\bibitem' itself: | |
| 287 if cline =~ g:tex_items | |
| 11518 | 288 let ind = ind - shiftwidth() |
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289 let stay = 0 |
| 3224 | 290 endif |
| 25773 | 291 " lines following to '\item' are indented once again: |
| 3224 | 292 if line =~ g:tex_items |
| 11518 | 293 let ind = ind + shiftwidth() |
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294 let stay = 0 |
| 3224 | 295 endif |
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296 endif |
| 3224 | 297 |
| 13937 | 298 if stay && mode() == 'i' |
| 299 " If there is no obvious indentation hint, and indentation is triggered | |
| 300 " in insert mode, we trust our user. | |
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301 if empty(cline) |
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302 return ind |
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303 else |
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304 return max([indent(v:lnum), s:GetLastBeginIndentation(v:lnum)]) |
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305 endif |
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306 else |
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307 return ind |
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308 endif |
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309 endfunction "}}} |
| 13937 | 310 |
| 311 function! s:GetLastBeginIndentation(lnum) " {{{ | |
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312 let matchend = 1 |
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313 for lnum in range(a:lnum-1, max([a:lnum - g:tex_max_scan_line, 1]), -1) |
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314 let line = getline(lnum) |
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315 if line =~ '\\end{.*}' |
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316 let matchend += 1 |
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317 endif |
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318 if line =~ '\\begin{.*}' |
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319 let matchend -= 1 |
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320 endif |
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321 if matchend == 0 |
| 13937 | 322 if line =~ g:tex_noindent_env |
| 323 return indent(lnum) | |
| 324 endif | |
| 13912 | 325 if line =~ g:tex_itemize_env |
| 326 return indent(lnum) + 2 * shiftwidth() | |
| 327 endif | |
| 11518 | 328 return indent(lnum) + shiftwidth() |
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329 endif |
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330 endfor |
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331 return -1 |
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332 endfunction |
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333 |
| 13937 | 334 function! s:GetEndIndentation(lnum) " {{{ |
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335 if getline(a:lnum) =~ '\\begin{.*}.*\\end{.*}' |
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336 return -1 |
| 3224 | 337 endif |
| 338 | |
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339 let min_indent = 100 |
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340 let matchend = 1 |
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341 for lnum in range(a:lnum-1, max([a:lnum-g:tex_max_scan_line, 1]), -1) |
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342 let line = getline(lnum) |
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343 if line =~ '\\end{.*}' |
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344 let matchend += 1 |
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345 endif |
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346 if line =~ '\\begin{.*}' |
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347 let matchend -= 1 |
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348 endif |
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349 if matchend == 0 |
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350 return indent(lnum) |
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351 endif |
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352 if !empty(line) |
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353 let min_indent = min([min_indent, indent(lnum)]) |
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354 endif |
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355 endfor |
| 11518 | 356 return min_indent - shiftwidth() |
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357 endfunction |
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358 |
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359 " Most of the code is from matchparen.vim |
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360 function! s:CheckPairedIsLastCharacter(lnum, col) "{{{ |
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361 let c_lnum = a:lnum |
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362 let c_col = a:col+1 |
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363 |
| 13937 | 364 let line = getline(c_lnum) |
| 365 if line[c_col-1] == '\' | |
| 366 let c_col = c_col + 1 | |
| 367 endif | |
| 368 let c = line[c_col-1] | |
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369 |
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370 let plist = split(&matchpairs, '.\zs[:,]') |
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371 let i = index(plist, c) |
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372 if i < 0 |
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373 return 0 |
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374 endif |
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375 |
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376 " Figure out the arguments for searchpairpos(). |
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377 if i % 2 == 0 |
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378 let s_flags = 'nW' |
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379 let c2 = plist[i + 1] |
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380 else |
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381 let s_flags = 'nbW' |
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382 let c2 = c |
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383 let c = plist[i - 1] |
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384 endif |
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385 if c == '[' |
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386 let c = '\[' |
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387 let c2 = '\]' |
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388 endif |
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389 |
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390 " Find the match. When it was just before the cursor move it there for a |
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391 " moment. |
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392 let save_cursor = winsaveview() |
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393 call cursor(c_lnum, c_col) |
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394 |
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395 " When not in a string or comment ignore matches inside them. |
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396 " We match "escape" for special items, such as lispEscapeSpecial. |
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397 let s_skip ='synIDattr(synID(line("."), col("."), 0), "name") ' . |
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398 \ '=~? "string\\|character\\|singlequote\\|escape\\|comment"' |
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399 execute 'if' s_skip '| let s_skip = 0 | endif' |
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400 |
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401 let stopline = max([0, c_lnum - g:tex_max_scan_line]) |
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Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
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402 |
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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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403 " Limit the search time to 300 msec to avoid a hang on very long lines. |
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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 " This fails when a timeout is not supported. |
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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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405 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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406 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
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407 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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408 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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409 |
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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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410 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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411 |
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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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412 if m_lnum > 0 |
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1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
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413 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
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414 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
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415 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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416 |
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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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417 return 0 |
| 13937 | 418 endfunction "}}} |
| 419 | |
| 3237 | 420 let &cpo = s:cpo_save |
| 421 unlet s:cpo_save | |
| 422 | |
| 3224 | 423 " vim: set sw=4 textwidth=80: |