Mercurial > vim
annotate runtime/indent/tex.vim @ 19323:af8116c90200
Added tag v8.2.0219 for changeset 00d52ef425a403d9eacd78dea99d553471bd4592
author | Bram Moolenaar <Bram@vim.org> |
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date | Wed, 05 Feb 2020 23:15:04 +0100 |
parents | cd513458728c |
children | 74e3316c1d5a |
rev | line source |
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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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397 try |
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398 let [m_lnum, m_col] = searchpairpos(c, '', c2, s_flags, s_skip, stopline, 100) |
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399 catch /E118/ |
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400 endtry |
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401 |
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402 call winrestview(save_cursor) |
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403 |
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commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
|
404 if m_lnum > 0 |
1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
|
405 let line = getline(m_lnum) |
1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
|
406 return strlen(line) == m_col |
1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
|
407 endif |
1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
|
408 |
1bf1b88968a2
commit https://github.com/vim/vim/commit/328da0dcb7be34b594725eef6dc98d3ea6516d69
Christian Brabandt <cb@256bit.org>
parents:
4437
diff
changeset
|
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: |