xref: /vim-8.2.3635/runtime/syntax/tex.vim (revision 95bafa29) 
1" Vim syntax file
2" Language:	TeX
3" Maintainer:	Charles E. Campbell <[email protected]>
4" Last Change:	Sep 09, 2018
5" Version:	110
6" URL:		http://www.drchip.org/astronaut/vim/index.html#SYNTAX_TEX
7"
8" Notes: {{{1
9"
10" 1. If you have a \begin{verbatim} that appears to overrun its boundaries,
11"    use %stopzone.
12"
13" 2. Run-on equations ($..$ and $$..$$, particularly) can also be stopped
14"    by suitable use of %stopzone.
15"
16" 3. If you have a slow computer, you may wish to modify
17"
18"	syn sync maxlines=200
19"	syn sync minlines=50
20"
21"    to values that are more to your liking.
22"
23" 4. There is no match-syncing for $...$ and $$...$$; hence large
24"    equation blocks constructed that way may exhibit syncing problems.
25"    (there's no difference between begin/end patterns)
26"
27" 5. If you have the variable "g:tex_no_error" defined then none of the
28"    lexical error-checking will be done.
29"
30"    ie. let g:tex_no_error=1
31"
32" 6. Please see  :help latex-syntax  for information on
33"      syntax folding           :help tex-folding
34"      spell checking           :help tex-nospell
35"      commands and mathzones   :help tex-runon
36"      new command highlighting :help tex-morecommands
37"      error highlighting       :help tex-error
38"      new math groups          :help tex-math
39"      new styles               :help tex-style
40"      using conceal mode       :help tex-conceal
41
42" Version Clears: {{{1
43" quit when a syntax file was already loaded
44if exists("b:current_syntax")
45  finish
46endif
47let s:keepcpo= &cpo
48set cpo&vim
49scriptencoding utf-8
50
51" by default, enable all region-based highlighting
52let s:tex_fast= "bcmMprsSvV"
53if exists("g:tex_fast")
54 if type(g:tex_fast) != 1
55  " g:tex_fast exists and is not a string, so
56  " turn off all optional region-based highighting
57  let s:tex_fast= ""
58 else
59  let s:tex_fast= g:tex_fast
60 endif
61endif
62
63" let user determine which classes of concealment will be supported
64"   a=accents/ligatures d=delimiters m=math symbols  g=Greek  s=superscripts/subscripts
65if !exists("g:tex_conceal")
66 let s:tex_conceal= 'abdmgsS'
67else
68 let s:tex_conceal= g:tex_conceal
69endif
70if !exists("g:tex_superscripts")
71 let s:tex_superscripts= '[0-9a-zA-W.,:;+-<>/()=]'
72else
73 let s:tex_superscripts= g:tex_superscripts
74endif
75if !exists("g:tex_subscripts")
76 let s:tex_subscripts= '[0-9aehijklmnoprstuvx,+-/().]'
77else
78 let s:tex_subscripts= g:tex_subscripts
79endif
80
81" Determine whether or not to use "*.sty" mode {{{1
82" The user may override the normal determination by setting
83"   g:tex_stylish to 1      (for    "*.sty" mode)
84"    or to           0 else (normal "*.tex" mode)
85" or on a buffer-by-buffer basis with b:tex_stylish
86let s:extfname=expand("%:e")
87if exists("g:tex_stylish")
88 let b:tex_stylish= g:tex_stylish
89elseif !exists("b:tex_stylish")
90 if s:extfname == "sty" || s:extfname == "cls" || s:extfname == "clo" || s:extfname == "dtx" || s:extfname == "ltx"
91  let b:tex_stylish= 1
92 else
93  let b:tex_stylish= 0
94 endif
95endif
96
97" handle folding {{{1
98if !exists("g:tex_fold_enabled")
99 let s:tex_fold_enabled= 0
100elseif g:tex_fold_enabled && !has("folding")
101 let s:tex_fold_enabled= 0
102 echomsg "Ignoring g:tex_fold_enabled=".g:tex_fold_enabled."; need to re-compile vim for +fold support"
103else
104 let s:tex_fold_enabled= 1
105endif
106if s:tex_fold_enabled && &fdm == "manual"
107 setl fdm=syntax
108endif
109if s:tex_fold_enabled && has("folding")
110 com! -nargs=* TexFold <args> fold
111else
112 com! -nargs=* TexFold <args>
113endif
114
115" (La)TeX keywords: uses the characters 0-9,a-z,A-Z,192-255 only... {{{1
116" but _ is the only one that causes problems.
117" One may override this iskeyword setting by providing
118" g:tex_isk
119if exists("g:tex_isk")
120 if b:tex_stylish && g:tex_isk !~ '@'
121  let b:tex_isk= '@,'.g:tex_isk
122 else
123  let b:tex_isk= g:tex_isk
124 endif
125elseif b:tex_stylish
126 let b:tex_isk="@,48-57,a-z,A-Z,192-255"
127else
128 let b:tex_isk="48-57,a-z,A-Z,192-255"
129endif
130if v:version > 704 || (v:version == 704 && has("patch-7.4.1142"))
131 exe "syn iskeyword ".b:tex_isk
132else
133 exe "setl isk=".b:tex_isk
134endif
135if exists("g:tex_no_error") && g:tex_no_error
136 let s:tex_no_error= 1
137else
138 let s:tex_no_error= 0
139endif
140if exists("g:tex_comment_nospell") && g:tex_comment_nospell
141 let s:tex_comment_nospell= 1
142else
143 let s:tex_comment_nospell= 0
144endif
145if exists("g:tex_nospell") && g:tex_nospell
146 let s:tex_nospell = 1
147else
148 let s:tex_nospell = 0
149endif
150
151" Clusters: {{{1
152" --------
153syn cluster texCmdGroup			contains=texCmdBody,texComment,texDefParm,texDelimiter,texDocType,texInput,texLength,texLigature,texMathDelim,texMathOper,texNewCmd,texNewEnv,texRefZone,texSection,texBeginEnd,texBeginEndName,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle,@texMathZones
154if !s:tex_no_error
155 syn cluster texCmdGroup		add=texMathError
156endif
157syn cluster texEnvGroup			contains=texMatcher,texMathDelim,texSpecialChar,texStatement
158syn cluster texFoldGroup		contains=texAccent,texBadMath,texComment,texDefCmd,texDelimiter,texDocType,texInput,texInputFile,texLength,texLigature,texMatcher,texMathZoneV,texMathZoneW,texMathZoneX,texMathZoneY,texMathZoneZ,texNewCmd,texNewEnv,texOnlyMath,texOption,texParen,texRefZone,texSection,texBeginEnd,texSectionZone,texSpaceCode,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle,texZone,@texMathZones,texTitle,texAbstract,texBoldStyle,texItalStyle,texNoSpell
159syn cluster texBoldGroup		contains=texAccent,texBadMath,texComment,texDefCmd,texDelimiter,texDocType,texInput,texInputFile,texLength,texLigature,texMatcher,texMathZoneV,texMathZoneW,texMathZoneX,texMathZoneY,texMathZoneZ,texNewCmd,texNewEnv,texOnlyMath,texOption,texParen,texRefZone,texSection,texBeginEnd,texSectionZone,texSpaceCode,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle,texZone,@texMathZones,texTitle,texAbstract,texBoldStyle,texBoldItalStyle,texNoSpell
160syn cluster texItalGroup		contains=texAccent,texBadMath,texComment,texDefCmd,texDelimiter,texDocType,texInput,texInputFile,texLength,texLigature,texMatcher,texMathZoneV,texMathZoneW,texMathZoneX,texMathZoneY,texMathZoneZ,texNewCmd,texNewEnv,texOnlyMath,texOption,texParen,texRefZone,texSection,texBeginEnd,texSectionZone,texSpaceCode,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle,texZone,@texMathZones,texTitle,texAbstract,texItalStyle,texItalBoldStyle,texNoSpell
161if !s:tex_nospell
162 syn cluster texMatchGroup		contains=texAccent,texBadMath,texComment,texDefCmd,texDelimiter,texDocType,texInput,texLength,texLigature,texMatcher,texNewCmd,texNewEnv,texOnlyMath,texParen,texRefZone,texSection,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle,texZone,texInputFile,texOption,@Spell
163 syn cluster texMatchNMGroup		contains=texAccent,texBadMath,texComment,texDefCmd,texDelimiter,texDocType,texInput,texLength,texLigature,texMatcherNM,texNewCmd,texNewEnv,texOnlyMath,texParen,texRefZone,texSection,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle,texZone,texInputFile,texOption,@Spell
164 syn cluster texStyleGroup		contains=texAccent,texBadMath,texComment,texDefCmd,texDelimiter,texDocType,texInput,texLength,texLigature,texNewCmd,texNewEnv,texOnlyMath,texParen,texRefZone,texSection,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle,texZone,texInputFile,texOption,texStyleStatement,@Spell,texStyleMatcher
165else
166 syn cluster texMatchGroup		contains=texAccent,texBadMath,texComment,texDefCmd,texDelimiter,texDocType,texInput,texLength,texLigature,texMatcher,texNewCmd,texNewEnv,texOnlyMath,texParen,texRefZone,texSection,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle,texZone,texInputFile,texOption
167 syn cluster texMatchNMGroup		contains=texAccent,texBadMath,texComment,texDefCmd,texDelimiter,texDocType,texInput,texLength,texLigature,texMatcherNM,texNewCmd,texNewEnv,texOnlyMath,texParen,texRefZone,texSection,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle,texZone,texInputFile,texOption
168 syn cluster texStyleGroup		contains=texAccent,texBadMath,texComment,texDefCmd,texDelimiter,texDocType,texInput,texLength,texLigature,texNewCmd,texNewEnv,texOnlyMath,texParen,texRefZone,texSection,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle,texZone,texInputFile,texOption,texStyleStatement,texStyleMatcher
169endif
170syn cluster texPreambleMatchGroup	contains=texAccent,texBadMath,texComment,texDefCmd,texDelimiter,texDocType,texInput,texLength,texLigature,texMatcherNM,texNewCmd,texNewEnv,texOnlyMath,texParen,texRefZone,texSection,texSpecialChar,texStatement,texString,texTitle,texTypeSize,texTypeStyle,texZone,texInputFile,texOption,texMathZoneZ
171syn cluster texRefGroup			contains=texMatcher,texComment,texDelimiter
172if !exists("g:tex_no_math")
173 syn cluster texPreambleMatchGroup	contains=texAccent,texBadMath,texComment,texDefCmd,texDelimiter,texDocType,texInput,texLength,texLigature,texMatcherNM,texNewCmd,texNewEnv,texOnlyMath,texParen,texRefZone,texSection,texSpecialChar,texStatement,texString,texTitle,texTypeSize,texTypeStyle,texZone,texInputFile,texOption,texMathZoneZ
174 syn cluster texMathZones		contains=texMathZoneV,texMathZoneW,texMathZoneX,texMathZoneY,texMathZoneZ
175 syn cluster texMatchGroup		add=@texMathZones
176 syn cluster texMathDelimGroup		contains=texMathDelimBad,texMathDelimKey,texMathDelimSet1,texMathDelimSet2
177 syn cluster texMathMatchGroup		contains=@texMathZones,texComment,texDefCmd,texDelimiter,texDocType,texInput,texLength,texLigature,texMathDelim,texMathMatcher,texMathOper,texNewCmd,texNewEnv,texRefZone,texSection,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle,texZone
178 syn cluster texMathZoneGroup		contains=texComment,texDelimiter,texLength,texMathDelim,texMathMatcher,texMathOper,texMathSymbol,texMathText,texRefZone,texSpecialChar,texStatement,texTypeSize,texTypeStyle
179 if !s:tex_no_error
180  syn cluster texMathMatchGroup		add=texMathError
181  syn cluster texMathZoneGroup		add=texMathError
182 endif
183 syn cluster texMathZoneGroup		add=@NoSpell
184 " following used in the \part \chapter \section \subsection \subsubsection
185 " \paragraph \subparagraph \author \title highlighting
186 syn cluster texDocGroup		contains=texPartZone,@texPartGroup
187 syn cluster texPartGroup		contains=texChapterZone,texSectionZone,texParaZone
188 syn cluster texChapterGroup		contains=texSectionZone,texParaZone
189 syn cluster texSectionGroup		contains=texSubSectionZone,texParaZone
190 syn cluster texSubSectionGroup		contains=texSubSubSectionZone,texParaZone
191 syn cluster texSubSubSectionGroup	contains=texParaZone
192 syn cluster texParaGroup		contains=texSubParaZone
193 if has("conceal") && &enc == 'utf-8'
194  syn cluster texMathZoneGroup		add=texGreek,texSuperscript,texSubscript,texMathSymbol
195  syn cluster texMathMatchGroup		add=texGreek,texSuperscript,texSubscript,texMathSymbol
196 endif
197endif
198
199" Try to flag {} and () mismatches: {{{1
200if s:tex_fast =~# 'm'
201  if !s:tex_no_error
202   syn region texMatcher	matchgroup=Delimiter start="{" skip="\\\\\|\\[{}]"	end="}"			transparent contains=@texMatchGroup,texError
203   syn region texMatcher	matchgroup=Delimiter start="\["				end="]"			transparent contains=@texMatchGroup,texError,@NoSpell
204   syn region texMatcherNM	matchgroup=Delimiter start="{" skip="\\\\\|\\[{}]"	end="}"			transparent contains=@texMatchNMGroup,texError
205   syn region texMatcherNM	matchgroup=Delimiter start="\["				end="]"			transparent contains=@texMatchNMGroup,texError,@NoSpell
206  else
207   syn region texMatcher	matchgroup=Delimiter start="{" skip="\\\\\|\\[{}]"	end="}"			transparent contains=@texMatchGroup
208   syn region texMatcher	matchgroup=Delimiter start="\["				end="]"			transparent contains=@texMatchGroup
209   syn region texMatcherNM	matchgroup=Delimiter start="{" skip="\\\\\|\\[{}]"	end="}"			transparent contains=@texMatchNMGroup
210   syn region texMatcherNM	matchgroup=Delimiter start="\["				end="]"			transparent contains=@texMatchNMGroup
211  endif
212  if !s:tex_nospell
213   syn region texParen		start="("	end=")"								transparent contains=@texMatchGroup,@Spell
214  else
215   syn region texParen		start="("	end=")"								transparent contains=@texMatchGroup
216  endif
217endif
218if !s:tex_no_error
219 syn match  texError		"[}\])]"
220endif
221if s:tex_fast =~# 'M'
222  if !exists("g:tex_no_math")
223   if !s:tex_no_error
224    syn match  texMathError	"}"	contained
225   endif
226   syn region texMathMatcher	matchgroup=Delimiter	start="{"          skip="\%(\\\\\)*\\}"     end="}" end="%stopzone\>"	contained contains=@texMathMatchGroup
227  endif
228endif
229
230" TeX/LaTeX keywords: {{{1
231" Instead of trying to be All Knowing, I just match \..alphameric..
232" Note that *.tex files may not have "@" in their \commands
233if exists("g:tex_tex") || b:tex_stylish
234  syn match texStatement	"\\[a-zA-Z@]\+"
235else
236  syn match texStatement	"\\\a\+"
237  if !s:tex_no_error
238   syn match texError		"\\\a*@[a-zA-Z@]*"
239  endif
240endif
241
242" TeX/LaTeX delimiters: {{{1
243syn match texDelimiter		"&"
244syn match texDelimiter		"\\\\"
245
246" Tex/Latex Options: {{{1
247syn match texOption		"[^\\]\zs#\d\+\|^#\d\+"
248
249" texAccent (tnx to Karim Belabas) avoids annoying highlighting for accents: {{{1
250if b:tex_stylish
251  syn match texAccent		"\\[bcdvuH][^a-zA-Z@]"me=e-1
252  syn match texLigature		"\\\([ijolL]\|ae\|oe\|ss\|AA\|AE\|OE\)[^a-zA-Z@]"me=e-1
253else
254  syn match texAccent		"\\[bcdvuH]\A"me=e-1
255  syn match texLigature		"\\\([ijolL]\|ae\|oe\|ss\|AA\|AE\|OE\)\A"me=e-1
256endif
257syn match texAccent		"\\[bcdvuH]$"
258syn match texAccent		+\\[=^.\~"`']+
259syn match texAccent		+\\['=t'.c^ud"vb~Hr]{\a}+
260syn match texLigature		"\\\([ijolL]\|ae\|oe\|ss\|AA\|AE\|OE\)$"
261
262
263" \begin{}/\end{} section markers: {{{1
264syn match  texBeginEnd		"\\begin\>\|\\end\>" nextgroup=texBeginEndName
265if s:tex_fast =~# 'm'
266  syn region texBeginEndName		matchgroup=Delimiter	start="{"		end="}"	contained	nextgroup=texBeginEndModifier	contains=texComment
267  syn region texBeginEndModifier	matchgroup=Delimiter	start="\["		end="]"	contained	contains=texComment,@texMathZones,@NoSpell
268endif
269
270" \documentclass, \documentstyle, \usepackage: {{{1
271syn match  texDocType		"\\documentclass\>\|\\documentstyle\>\|\\usepackage\>"	nextgroup=texBeginEndName,texDocTypeArgs
272if s:tex_fast =~# 'm'
273  syn region texDocTypeArgs	matchgroup=Delimiter start="\[" end="]"			contained	nextgroup=texBeginEndName	contains=texComment,@NoSpell
274endif
275
276" Preamble syntax-based folding support: {{{1
277if s:tex_fold_enabled && has("folding")
278 syn region texPreamble	transparent fold	start='\zs\\documentclass\>' end='\ze\\begin{document}'	contains=texStyle,@texPreambleMatchGroup
279endif
280
281" TeX input: {{{1
282syn match texInput		"\\input\s\+[a-zA-Z/.0-9_^]\+"hs=s+7				contains=texStatement
283syn match texInputFile		"\\include\(graphics\|list\)\=\(\[.\{-}\]\)\=\s*{.\{-}}"	contains=texStatement,texInputCurlies,texInputFileOpt
284syn match texInputFile		"\\\(epsfig\|input\|usepackage\)\s*\(\[.*\]\)\={.\{-}}"		contains=texStatement,texInputCurlies,texInputFileOpt
285syn match texInputCurlies	"[{}]"								contained
286if s:tex_fast =~# 'm'
287 syn region texInputFileOpt	matchgroup=Delimiter start="\[" end="\]"			contained	contains=texComment
288endif
289
290" Type Styles (LaTeX 2.09): {{{1
291syn match texTypeStyle		"\\rm\>"
292syn match texTypeStyle		"\\em\>"
293syn match texTypeStyle		"\\bf\>"
294syn match texTypeStyle		"\\it\>"
295syn match texTypeStyle		"\\sl\>"
296syn match texTypeStyle		"\\sf\>"
297syn match texTypeStyle		"\\sc\>"
298syn match texTypeStyle		"\\tt\>"
299
300" Type Styles: attributes, commands, families, etc (LaTeX2E): {{{1
301if s:tex_conceal !~# 'b'
302 syn match texTypeStyle		"\\textbf\>"
303 syn match texTypeStyle		"\\textit\>"
304endif
305syn match texTypeStyle		"\\textmd\>"
306syn match texTypeStyle		"\\textrm\>"
307syn match texTypeStyle		"\\textsc\>"
308syn match texTypeStyle		"\\textsf\>"
309syn match texTypeStyle		"\\textsl\>"
310syn match texTypeStyle		"\\texttt\>"
311syn match texTypeStyle		"\\textup\>"
312syn match texTypeStyle		"\\emph\>"
313
314syn match texTypeStyle		"\\mathbb\>"
315syn match texTypeStyle		"\\mathbf\>"
316syn match texTypeStyle		"\\mathcal\>"
317syn match texTypeStyle		"\\mathfrak\>"
318syn match texTypeStyle		"\\mathit\>"
319syn match texTypeStyle		"\\mathnormal\>"
320syn match texTypeStyle		"\\mathrm\>"
321syn match texTypeStyle		"\\mathsf\>"
322syn match texTypeStyle		"\\mathtt\>"
323
324syn match texTypeStyle		"\\rmfamily\>"
325syn match texTypeStyle		"\\sffamily\>"
326syn match texTypeStyle		"\\ttfamily\>"
327
328syn match texTypeStyle		"\\itshape\>"
329syn match texTypeStyle		"\\scshape\>"
330syn match texTypeStyle		"\\slshape\>"
331syn match texTypeStyle		"\\upshape\>"
332
333syn match texTypeStyle		"\\bfseries\>"
334syn match texTypeStyle		"\\mdseries\>"
335
336" Some type sizes: {{{1
337syn match texTypeSize		"\\tiny\>"
338syn match texTypeSize		"\\scriptsize\>"
339syn match texTypeSize		"\\footnotesize\>"
340syn match texTypeSize		"\\small\>"
341syn match texTypeSize		"\\normalsize\>"
342syn match texTypeSize		"\\large\>"
343syn match texTypeSize		"\\Large\>"
344syn match texTypeSize		"\\LARGE\>"
345syn match texTypeSize		"\\huge\>"
346syn match texTypeSize		"\\Huge\>"
347
348" Spacecodes (TeX'isms): {{{1
349" \mathcode`\^^@="2201  \delcode`\(="028300  \sfcode`\)=0 \uccode`X=`X  \lccode`x=`x
350syn match texSpaceCode		"\\\(math\|cat\|del\|lc\|sf\|uc\)code`"me=e-1 nextgroup=texSpaceCodeChar
351syn match texSpaceCodeChar    "`\\\=.\(\^.\)\==\(\d\|\"\x\{1,6}\|`.\)"	contained
352
353" Sections, subsections, etc: {{{1
354if s:tex_fast =~# 'p'
355 if !s:tex_nospell
356  TexFold syn region texDocZone			matchgroup=texSection start='\\begin\s*{\s*document\s*}' end='\\end\s*{\s*document\s*}'											contains=@texFoldGroup,@texDocGroup,@Spell
357  TexFold syn region texPartZone		matchgroup=texSection start='\\part\>'			 end='\ze\s*\\\%(part\>\|end\s*{\s*document\s*}\)'								contains=@texFoldGroup,@texPartGroup,@Spell
358  TexFold syn region texChapterZone		matchgroup=texSection start='\\chapter\>'		 end='\ze\s*\\\%(chapter\>\|part\>\|end\s*{\s*document\s*}\)'							contains=@texFoldGroup,@texChapterGroup,@Spell
359  TexFold syn region texSectionZone		matchgroup=texSection start='\\section\>'		 end='\ze\s*\\\%(section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'					contains=@texFoldGroup,@texSectionGroup,@Spell
360  TexFold syn region texSubSectionZone		matchgroup=texSection start='\\subsection\>'		 end='\ze\s*\\\%(\%(sub\)\=section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'				contains=@texFoldGroup,@texSubSectionGroup,@Spell
361  TexFold syn region texSubSubSectionZone	matchgroup=texSection start='\\subsubsection\>'		 end='\ze\s*\\\%(\%(sub\)\{,2}section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'				contains=@texFoldGroup,@texSubSubSectionGroup,@Spell
362  TexFold syn region texParaZone		matchgroup=texSection start='\\paragraph\>'		 end='\ze\s*\\\%(paragraph\>\|\%(sub\)*section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'			contains=@texFoldGroup,@texParaGroup,@Spell
363  TexFold syn region texSubParaZone		matchgroup=texSection start='\\subparagraph\>'		 end='\ze\s*\\\%(\%(sub\)\=paragraph\>\|\%(sub\)*section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'	contains=@texFoldGroup,@Spell
364  TexFold syn region texTitle			matchgroup=texSection start='\\\%(author\|title\)\>\s*{' end='}'													contains=@texFoldGroup,@Spell
365  TexFold syn region texAbstract		matchgroup=texSection start='\\begin\s*{\s*abstract\s*}' end='\\end\s*{\s*abstract\s*}'											contains=@texFoldGroup,@Spell
366 else
367  TexFold syn region texDocZone			matchgroup=texSection start='\\begin\s*{\s*document\s*}' end='\\end\s*{\s*document\s*}'											contains=@texFoldGroup,@texDocGroup
368  TexFold syn region texPartZone		matchgroup=texSection start='\\part\>'			 end='\ze\s*\\\%(part\>\|end\s*{\s*document\s*}\)'								contains=@texFoldGroup,@texPartGroup
369  TexFold syn region texChapterZone		matchgroup=texSection start='\\chapter\>'		 end='\ze\s*\\\%(chapter\>\|part\>\|end\s*{\s*document\s*}\)'							contains=@texFoldGroup,@texChapterGroup
370  TexFold syn region texSectionZone		matchgroup=texSection start='\\section\>'		 end='\ze\s*\\\%(section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'					contains=@texFoldGroup,@texSectionGroup
371  TexFold syn region texSubSectionZone		matchgroup=texSection start='\\subsection\>'		 end='\ze\s*\\\%(\%(sub\)\=section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'				contains=@texFoldGroup,@texSubSectionGroup
372  TexFold syn region texSubSubSectionZone	matchgroup=texSection start='\\subsubsection\>'		 end='\ze\s*\\\%(\%(sub\)\{,2}section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'				contains=@texFoldGroup,@texSubSubSectionGroup
373  TexFold syn region texParaZone		matchgroup=texSection start='\\paragraph\>'		 end='\ze\s*\\\%(paragraph\>\|\%(sub\)*section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'			contains=@texFoldGroup,@texParaGroup
374  TexFold syn region texSubParaZone		matchgroup=texSection start='\\subparagraph\>'		 end='\ze\s*\\\%(\%(sub\)\=paragraph\>\|\%(sub\)*section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'	contains=@texFoldGroup
375  TexFold syn region texTitle			matchgroup=texSection start='\\\%(author\|title\)\>\s*{' end='}'													contains=@texFoldGroup
376  TexFold syn region texAbstract		matchgroup=texSection start='\\begin\s*{\s*abstract\s*}' end='\\end\s*{\s*abstract\s*}'											contains=@texFoldGroup
377  endif
378endif
379
380" particular support for bold and italic {{{1
381if s:tex_fast =~# 'b'
382  if s:tex_conceal =~# 'b'
383   if !exists("g:tex_nospell") || !g:tex_nospell
384    syn region texBoldStyle	matchgroup=texTypeStyle start="\\textbf\s*{" matchgroup=texTypeStyle  end="}" concealends contains=@texBoldGroup,@Spell
385    syn region texBoldItalStyle	matchgroup=texTypeStyle start="\\textit\s*{" matchgroup=texTypeStyle  end="}" concealends contains=@texItalGroup,@Spell
386    syn region texItalStyle	matchgroup=texTypeStyle start="\\textit\s*{" matchgroup=texTypeStyle  end="}" concealends contains=@texItalGroup,@Spell
387    syn region texItalBoldStyle	matchgroup=texTypeStyle start="\\textbf\s*{" matchgroup=texTypeStyle  end="}" concealends contains=@texBoldGroup,@Spell
388   else
389    syn region texBoldStyle	matchgroup=texTypeStyle start="\\textbf\s*{" matchgroup=texTypeStyle  end="}" concealends contains=@texBoldGroup
390    syn region texBoldItalStyle	matchgroup=texTypeStyle start="\\textit\s*{" matchgroup=texTypeStyle  end="}" concealends contains=@texItalGroup
391    syn region texItalStyle	matchgroup=texTypeStyle start="\\textit\s*{" matchgroup=texTypeStyle  end="}" concealends contains=@texItalGroup
392    syn region texItalBoldStyle	matchgroup=texTypeStyle start="\\textbf\s*{" matchgroup=texTypeStyle  end="}" concealends contains=@texBoldGroup
393   endif
394  endif
395endif
396
397" Bad Math (mismatched): {{{1
398if !exists("g:tex_no_math") && !s:tex_no_error
399 syn match texBadMath		"\\end\s*{\s*\(array\|[bBpvV]matrix\|split\|smallmatrix\)\s*}"
400 syn match texBadMath		"\\end\s*{\s*\(displaymath\|equation\|eqnarray\|math\)\*\=\s*}"
401 syn match texBadMath		"\\[\])]"
402endif
403
404" Math Zones: {{{1
405if !exists("g:tex_no_math")
406 " TexNewMathZone: function creates a mathzone with the given suffix and mathzone name. {{{2
407 "                 Starred forms are created if starform is true.  Starred
408 "                 forms have syntax group and synchronization groups with a
409 "                 "S" appended.  Handles: cluster, syntax, sync, and highlighting.
410 fun! TexNewMathZone(sfx,mathzone,starform)
411   let grpname  = "texMathZone".a:sfx
412   let syncname = "texSyncMathZone".a:sfx
413   if s:tex_fold_enabled
414    let foldcmd= " fold"
415   else
416    let foldcmd= ""
417   endif
418   exe "syn cluster texMathZones add=".grpname
419   if s:tex_fast =~# 'M'
420    exe 'syn region '.grpname.' start='."'".'\\begin\s*{\s*'.a:mathzone.'\s*}'."'".' end='."'".'\\end\s*{\s*'.a:mathzone.'\s*}'."'".' keepend contains=@texMathZoneGroup'.foldcmd
421    exe 'syn sync match '.syncname.' grouphere '.grpname.' "\\begin\s*{\s*'.a:mathzone.'\*\s*}"'
422    exe 'syn sync match '.syncname.' grouphere '.grpname.' "\\begin\s*{\s*'.a:mathzone.'\*\s*}"'
423   endif
424   exe 'hi def link '.grpname.' texMath'
425   if a:starform
426    let grpname  = "texMathZone".a:sfx.'S'
427    let syncname = "texSyncMathZone".a:sfx.'S'
428    exe "syn cluster texMathZones add=".grpname
429    if s:tex_fast =~# 'M'
430     exe 'syn region '.grpname.' start='."'".'\\begin\s*{\s*'.a:mathzone.'\*\s*}'."'".' end='."'".'\\end\s*{\s*'.a:mathzone.'\*\s*}'."'".' keepend contains=@texMathZoneGroup'.foldcmd
431     exe 'syn sync match '.syncname.' grouphere '.grpname.' "\\begin\s*{\s*'.a:mathzone.'\*\s*}"'
432     exe 'syn sync match '.syncname.' grouphere '.grpname.' "\\begin\s*{\s*'.a:mathzone.'\*\s*}"'
433    endif
434    exe 'hi def link '.grpname.' texMath'
435   endif
436 endfun
437
438 " Standard Math Zones: {{{2
439 call TexNewMathZone("A","displaymath",1)
440 call TexNewMathZone("B","eqnarray",1)
441 call TexNewMathZone("C","equation",1)
442 call TexNewMathZone("D","math",1)
443
444 " Inline Math Zones: {{{2
445 if s:tex_fast =~# 'M'
446  if has("conceal") && &enc == 'utf-8' && s:tex_conceal =~# 'd'
447   syn region texMathZoneV	matchgroup=Delimiter start="\\("			matchgroup=Delimiter	end="\\)\|%stopzone\>"			keepend concealends contains=@texMathZoneGroup
448   syn region texMathZoneW	matchgroup=Delimiter start="\\\["			matchgroup=Delimiter	end="\\]\|%stopzone\>"			keepend concealends contains=@texMathZoneGroup
449   syn region texMathZoneX	matchgroup=Delimiter start="\$" skip="\\\\\|\\\$"	matchgroup=Delimiter	end="\$"	end="%stopzone\>"		concealends contains=@texMathZoneGroup
450   syn region texMathZoneY	matchgroup=Delimiter start="\$\$" 			matchgroup=Delimiter	end="\$\$"	end="%stopzone\>"	keepend concealends contains=@texMathZoneGroup
451  else
452   syn region texMathZoneV	matchgroup=Delimiter start="\\("			matchgroup=Delimiter	end="\\)\|%stopzone\>"			keepend contains=@texMathZoneGroup
453   syn region texMathZoneW	matchgroup=Delimiter start="\\\["			matchgroup=Delimiter	end="\\]\|%stopzone\>"			keepend contains=@texMathZoneGroup
454   syn region texMathZoneX	matchgroup=Delimiter start="\$" skip="\%(\\\\\)*\\\$"	matchgroup=Delimiter	end="\$"	end="%stopzone\>"		contains=@texMathZoneGroup
455   syn region texMathZoneY	matchgroup=Delimiter start="\$\$" 			matchgroup=Delimiter	end="\$\$"	end="%stopzone\>"	keepend	contains=@texMathZoneGroup
456  endif
457  syn region texMathZoneZ	matchgroup=texStatement start="\\ensuremath\s*{"	matchgroup=texStatement	end="}"		end="%stopzone\>"	contains=@texMathZoneGroup
458 endif
459
460 syn match texMathOper		"[_^=]" contained
461
462 " Text Inside Math Zones: {{{2
463 if s:tex_fast =~# 'M'
464  if !exists("g:tex_nospell") || !g:tex_nospell
465   syn region texMathText matchgroup=texStatement start='\\\(\(inter\)\=text\|mbox\)\s*{'	end='}'	contains=@texFoldGroup,@Spell
466  else
467   syn region texMathText matchgroup=texStatement start='\\\(\(inter\)\=text\|mbox\)\s*{'	end='}'	contains=@texFoldGroup
468  endif
469 endif
470
471 " \left..something.. and \right..something.. support: {{{2
472 syn match   texMathDelimBad	contained		"\S"
473 if has("conceal") && &enc == 'utf-8' && s:tex_conceal =~# 'm'
474  syn match   texMathDelim	contained		"\\left\["
475  syn match   texMathDelim	contained		"\\left\\{"	skipwhite nextgroup=texMathDelimSet1,texMathDelimSet2,texMathDelimBad contains=texMathSymbol cchar={
476  syn match   texMathDelim	contained		"\\right\\}"	skipwhite nextgroup=texMathDelimSet1,texMathDelimSet2,texMathDelimBad contains=texMathSymbol cchar=}
477  let s:texMathDelimList=[
478     \ ['<'            , '<'] ,
479     \ ['>'            , '>'] ,
480     \ ['('            , '('] ,
481     \ [')'            , ')'] ,
482     \ ['\['           , '['] ,
483     \ [']'            , ']'] ,
484     \ ['\\{'          , '{'] ,
485     \ ['\\}'          , '}'] ,
486     \ ['|'            , '|'] ,
487     \ ['\\|'          , '‖'] ,
488     \ ['\\backslash'  , '\'] ,
489     \ ['\\downarrow'  , '↓'] ,
490     \ ['\\Downarrow'  , '⇓'] ,
491     \ ['\\lbrace'     , '['] ,
492     \ ['\\lceil'      , '⌈'] ,
493     \ ['\\lfloor'     , '⌊'] ,
494     \ ['\\lgroup'     , '⌊'] ,
495     \ ['\\lmoustache' , '⎛'] ,
496     \ ['\\rbrace'     , ']'] ,
497     \ ['\\rceil'      , '⌉'] ,
498     \ ['\\rfloor'     , '⌋'] ,
499     \ ['\\rgroup'     , '⌋'] ,
500     \ ['\\rmoustache' , '⎞'] ,
501     \ ['\\uparrow'    , '↑'] ,
502     \ ['\\Uparrow'    , '↑'] ,
503     \ ['\\updownarrow', '↕'] ,
504     \ ['\\Updownarrow', '⇕']]
505  if &ambw == "double" || exists("g:tex_usedblwidth")
506    let s:texMathDelimList= s:texMathDelimList + [
507     \ ['\\langle'     , '〈'] ,
508     \ ['\\rangle'     , '〉']]
509  else
510    let s:texMathDelimList= s:texMathDelimList + [
511     \ ['\\langle'     , '<'] ,
512     \ ['\\rangle'     , '>']]
513  endif
514  syn match texMathDelim	'\\[bB]igg\=[lr]' contained nextgroup=texMathDelimBad
515  for texmath in s:texMathDelimList
516   exe "syn match texMathDelim	'\\\\[bB]igg\\=[lr]\\=".texmath[0]."'	contained conceal cchar=".texmath[1]
517  endfor
518
519 else
520  syn match   texMathDelim	contained		"\\\(left\|right\)\>"	skipwhite nextgroup=texMathDelimSet1,texMathDelimSet2,texMathDelimBad
521  syn match   texMathDelim	contained		"\\[bB]igg\=[lr]\=\>"	skipwhite nextgroup=texMathDelimSet1,texMathDelimSet2,texMathDelimBad
522  syn match   texMathDelimSet2	contained	"\\"		nextgroup=texMathDelimKey,texMathDelimBad
523  syn match   texMathDelimSet1	contained	"[<>()[\]|/.]\|\\[{}|]"
524  syn keyword texMathDelimKey	contained	backslash       lceil           lVert           rgroup          uparrow
525  syn keyword texMathDelimKey	contained	downarrow       lfloor          rangle          rmoustache      Uparrow
526  syn keyword texMathDelimKey	contained	Downarrow       lgroup          rbrace          rvert           updownarrow
527  syn keyword texMathDelimKey	contained	langle          lmoustache      rceil           rVert           Updownarrow
528  syn keyword texMathDelimKey	contained	lbrace          lvert           rfloor
529 endif
530 syn match   texMathDelim	contained		"\\\(left\|right\)arrow\>\|\<\([aA]rrow\|brace\)\=vert\>"
531 syn match   texMathDelim	contained		"\\lefteqn\>"
532endif
533
534" Special TeX characters  ( \$ \& \% \# \{ \} \_ \S \P ) : {{{1
535syn match texSpecialChar	"\\[$&%#{}_]"
536if b:tex_stylish
537  syn match texSpecialChar	"\\[SP@][^a-zA-Z@]"me=e-1
538else
539  syn match texSpecialChar	"\\[SP@]\A"me=e-1
540endif
541syn match texSpecialChar	"\\\\"
542if !exists("g:tex_no_math")
543 syn match texOnlyMath		"[_^]"
544endif
545syn match texSpecialChar	"\^\^[0-9a-f]\{2}\|\^\^\S"
546if s:tex_conceal !~# 'S'
547 syn match texSpecialChar	'\\glq\>'	contained conceal cchar=‚
548 syn match texSpecialChar	'\\grq\>'	contained conceal cchar=‘
549 syn match texSpecialChar	'\\glqq\>'	contained conceal cchar=„
550 syn match texSpecialChar	'\\grqq\>'	contained conceal cchar=“
551 syn match texSpecialChar	'\\hyp\>'	contained conceal cchar=-
552endif
553
554" Comments: {{{1
555"    Normal TeX LaTeX     :   %....
556"    Documented TeX Format:  ^^A...	-and-	leading %s (only)
557if !s:tex_comment_nospell
558 syn cluster texCommentGroup	contains=texTodo,@Spell
559else
560 syn cluster texCommentGroup	contains=texTodo,@NoSpell
561endif
562syn case ignore
563syn keyword texTodo		contained		combak	fixme	todo	xxx
564syn case match
565if s:extfname == "dtx"
566 syn match texComment		"\^\^A.*$"	contains=@texCommentGroup
567 syn match texComment		"^%\+"		contains=@texCommentGroup
568else
569 if s:tex_fold_enabled
570  " allows syntax-folding of 2 or more contiguous comment lines
571  " single-line comments are not folded
572  syn match  texComment	"%.*$"				contains=@texCommentGroup
573  if s:tex_fast =~# 'c'
574   TexFold syn region texComment						start="^\zs\s*%.*\_s*%"	skip="^\s*%"	end='^\ze\s*[^%]'	contains=@texCommentGroup
575   TexFold syn region texNoSpell	contained	matchgroup=texComment	start="%\s*nospell\s*{"	end="%\s*nospell\s*}"			contains=@texFoldGroup,@NoSpell
576  endif
577 else
578  syn match texComment		"%.*$"			contains=@texCommentGroup
579  if s:tex_fast =~# 'c'
580   syn region texNoSpell		contained	matchgroup=texComment start="%\s*nospell\s*{"	end="%\s*nospell\s*}"	contains=@texFoldGroup,@NoSpell
581  endif
582 endif
583endif
584
585" %begin-include ... %end-include acts like a texDocZone for \include'd files.  Permits spell checking, for example, in such files.
586if !s:tex_nospell
587 TexFold syn region texDocZone			matchgroup=texSection start='^\s*%begin-include\>'	 end='^\s*%end-include\>'											contains=@texFoldGroup,@texDocGroup,@Spell
588else
589 TexFold syn region texDocZone			matchgroup=texSection start='^\s*%begin-include\>'	 end='^\s*%end-include\>'											contains=@texFoldGroup,@texDocGroup
590endif
591
592" Separate lines used for verb` and verb# so that the end conditions {{{1
593" will appropriately terminate.
594" If g:tex_verbspell exists, then verbatim texZones will permit spellchecking there.
595if s:tex_fast =~# 'v'
596  if exists("g:tex_verbspell") && g:tex_verbspell
597   syn region texZone		start="\\begin{[vV]erbatim}"		end="\\end{[vV]erbatim}\|%stopzone\>"	contains=@Spell
598   " listings package:
599   if b:tex_stylish
600    syn region texZone		start="\\verb\*\=\z([^\ta-zA-Z@]\)"	end="\z1\|%stopzone\>"			contains=@Spell
601   else
602    syn region texZone		start="\\verb\*\=\z([^\ta-zA-Z]\)"	end="\z1\|%stopzone\>"			contains=@Spell
603   endif
604  else
605   syn region texZone		start="\\begin{[vV]erbatim}"		end="\\end{[vV]erbatim}\|%stopzone\>"
606   if b:tex_stylish
607     syn region texZone		start="\\verb\*\=\z([^\ta-zA-Z@]\)"	end="\z1\|%stopzone\>"
608   else
609     syn region texZone		start="\\verb\*\=\z([^\ta-zA-Z]\)"	end="\z1\|%stopzone\>"
610   endif
611  endif
612endif
613
614" Tex Reference Zones: {{{1
615if s:tex_fast =~# 'r'
616  syn region texZone		matchgroup=texStatement start="@samp{"			end="}\|%stopzone\>"	contains=@texRefGroup
617  syn region texRefZone		matchgroup=texStatement start="\\nocite{"		end="}\|%stopzone\>"	contains=@texRefGroup
618  syn region texRefZone		matchgroup=texStatement start="\\bibliography{"		end="}\|%stopzone\>"	contains=@texRefGroup
619  syn region texRefZone		matchgroup=texStatement start="\\label{"		end="}\|%stopzone\>"	contains=@texRefGroup
620  syn region texRefZone		matchgroup=texStatement start="\\\(page\|eq\)ref{"	end="}\|%stopzone\>"	contains=@texRefGroup
621  syn region texRefZone		matchgroup=texStatement start="\\v\=ref{"		end="}\|%stopzone\>"	contains=@texRefGroup
622  syn region texRefOption	contained	matchgroup=Delimiter start='\[' end=']'		contains=@texRefGroup,texRefZone	nextgroup=texRefOption,texCite
623  syn region texCite		contained	matchgroup=Delimiter start='{' end='}'		contains=@texRefGroup,texRefZone,texCite
624endif
625syn match  texRefZone		'\\cite\%([tp]\*\=\)\=' nextgroup=texRefOption,texCite
626
627" Handle newcommand, newenvironment : {{{1
628syn match  texNewCmd				"\\newcommand\>"			nextgroup=texCmdName skipwhite skipnl
629if s:tex_fast =~# 'V'
630  syn region texCmdName contained matchgroup=Delimiter start="{"rs=s+1  end="}"		nextgroup=texCmdArgs,texCmdBody skipwhite skipnl
631  syn region texCmdArgs contained matchgroup=Delimiter start="\["rs=s+1 end="]"		nextgroup=texCmdBody skipwhite skipnl
632  syn region texCmdBody contained matchgroup=Delimiter start="{"rs=s+1 skip="\\\\\|\\[{}]"	matchgroup=Delimiter end="}" contains=@texCmdGroup
633endif
634syn match  texNewEnv				"\\newenvironment\>"			nextgroup=texEnvName skipwhite skipnl
635if s:tex_fast =~# 'V'
636  syn region texEnvName contained matchgroup=Delimiter start="{"rs=s+1  end="}"		nextgroup=texEnvBgn skipwhite skipnl
637  syn region texEnvBgn  contained matchgroup=Delimiter start="{"rs=s+1  end="}"		nextgroup=texEnvEnd skipwhite skipnl contains=@texEnvGroup
638  syn region texEnvEnd  contained matchgroup=Delimiter start="{"rs=s+1  end="}"		skipwhite skipnl contains=@texEnvGroup
639endif
640
641" Definitions/Commands: {{{1
642syn match texDefCmd				"\\def\>"				nextgroup=texDefName skipwhite skipnl
643if b:tex_stylish
644  syn match texDefName contained		"\\[a-zA-Z@]\+"				nextgroup=texDefParms,texCmdBody skipwhite skipnl
645  syn match texDefName contained		"\\[^a-zA-Z@]"				nextgroup=texDefParms,texCmdBody skipwhite skipnl
646else
647  syn match texDefName contained		"\\\a\+"				nextgroup=texDefParms,texCmdBody skipwhite skipnl
648  syn match texDefName contained		"\\\A"					nextgroup=texDefParms,texCmdBody skipwhite skipnl
649endif
650syn match texDefParms  contained		"#[^{]*"	contains=texDefParm	nextgroup=texCmdBody skipwhite skipnl
651syn match  texDefParm  contained		"#\d\+"
652
653" TeX Lengths: {{{1
654syn match  texLength		"\<\d\+\([.,]\d\+\)\=\s*\(true\)\=\s*\(bp\|cc\|cm\|dd\|em\|ex\|in\|mm\|pc\|pt\|sp\)\>"
655
656" TeX String Delimiters: {{{1
657syn match texString		"\(``\|''\|,,\)"
658
659" makeatletter -- makeatother sections
660if !s:tex_no_error
661 if s:tex_fast =~# 'S'
662  syn region texStyle			matchgroup=texStatement start='\\makeatletter' end='\\makeatother'	contains=@texStyleGroup contained
663 endif
664 syn match  texStyleStatement		"\\[a-zA-Z@]\+"	contained
665 if s:tex_fast =~# 'S'
666  syn region texStyleMatcher		matchgroup=Delimiter start="{" skip="\\\\\|\\[{}]"	end="}"		contains=@texStyleGroup,texError	contained
667  syn region texStyleMatcher		matchgroup=Delimiter start="\["				end="]"		contains=@texStyleGroup,texError	contained
668 endif
669endif
670
671" Conceal mode support (supports set cole=2) {{{1
672if has("conceal") && &enc == 'utf-8'
673
674 " Math Symbols {{{2
675 " (many of these symbols were contributed by Björn Winckler)
676 if s:tex_conceal =~# 'm'
677  let s:texMathList=[
678    \ ['|'		, '‖'],
679    \ ['aleph'		, 'ℵ'],
680    \ ['amalg'		, '∐'],
681    \ ['angle'		, '∠'],
682    \ ['approx'		, '≈'],
683    \ ['ast'		, '∗'],
684    \ ['asymp'		, '≍'],
685    \ ['backslash'	, '∖'],
686    \ ['bigcap'		, '∩'],
687    \ ['bigcirc'	, '○'],
688    \ ['bigcup'		, '∪'],
689    \ ['bigodot'	, '⊙'],
690    \ ['bigoplus'	, '⊕'],
691    \ ['bigotimes'	, '⊗'],
692    \ ['bigsqcup'	, '⊔'],
693    \ ['bigtriangledown', '∇'],
694    \ ['bigtriangleup'	, '∆'],
695    \ ['bigvee'		, '⋁'],
696    \ ['bigwedge'	, '⋀'],
697    \ ['bot'		, '⊥'],
698    \ ['bowtie'	        , '⋈'],
699    \ ['bullet'	        , '•'],
700    \ ['cap'		, '∩'],
701    \ ['cdot'		, '·'],
702    \ ['cdots'		, '⋯'],
703    \ ['circ'		, '∘'],
704    \ ['clubsuit'	, '♣'],
705    \ ['cong'		, '≅'],
706    \ ['coprod'		, '∐'],
707    \ ['copyright'	, '©'],
708    \ ['cup'		, '∪'],
709    \ ['dagger'	        , '†'],
710    \ ['dashv'		, '⊣'],
711    \ ['ddagger'	, '‡'],
712    \ ['ddots'	        , '⋱'],
713    \ ['diamond'	, '⋄'],
714    \ ['diamondsuit'	, '♢'],
715    \ ['div'		, '÷'],
716    \ ['doteq'		, '≐'],
717    \ ['dots'		, '…'],
718    \ ['downarrow'	, '↓'],
719    \ ['Downarrow'	, '⇓'],
720    \ ['ell'		, 'ℓ'],
721    \ ['emptyset'	, '∅'],
722    \ ['equiv'		, '≡'],
723    \ ['exists'		, '∃'],
724    \ ['flat'		, '♭'],
725    \ ['forall'		, '∀'],
726    \ ['frown'		, '⁔'],
727    \ ['ge'		, '≥'],
728    \ ['geq'		, '≥'],
729    \ ['gets'		, '←'],
730    \ ['gg'		, '⟫'],
731    \ ['hbar'		, 'ℏ'],
732    \ ['heartsuit'	, '♡'],
733    \ ['hookleftarrow'	, '↩'],
734    \ ['hookrightarrow'	, '↪'],
735    \ ['iff'            , '⇔'],
736    \ ['Im'		, 'ℑ'],
737    \ ['imath'		, 'ɩ'],
738    \ ['in'		, '∈'],
739    \ ['infty'		, '∞'],
740    \ ['int'		, '∫'],
741    \ ['jmath'		, '��'],
742    \ ['land'		, '∧'],
743    \ ['lceil'		, '⌈'],
744    \ ['ldots'		, '…'],
745    \ ['le'		, '≤'],
746    \ ['left('		, '('],
747    \ ['left\['		, '['],
748    \ ['left\\{'	, '{'],
749    \ ['leftarrow'	, '←'],
750    \ ['Leftarrow'	, '⇐'],
751    \ ['leftharpoondown', '↽'],
752    \ ['leftharpoonup'	, '↼'],
753    \ ['leftrightarrow'	, '↔'],
754    \ ['Leftrightarrow'	, '⇔'],
755    \ ['leq'		, '≤'],
756    \ ['leq'		, '≤'],
757    \ ['lfloor'		, '⌊'],
758    \ ['ll'		, '≪'],
759    \ ['lmoustache'     , '╭'],
760    \ ['lor'		, '∨'],
761    \ ['mapsto'		, '↦'],
762    \ ['mid'		, '∣'],
763    \ ['models'		, '╞'],
764    \ ['mp'		, '∓'],
765    \ ['nabla'		, '∇'],
766    \ ['natural'	, '♮'],
767    \ ['ne'		, '≠'],
768    \ ['nearrow'	, '↗'],
769    \ ['neg'		, '¬'],
770    \ ['neq'		, '≠'],
771    \ ['ni'		, '∋'],
772    \ ['notin'		, '∉'],
773    \ ['nwarrow'	, '↖'],
774    \ ['odot'		, '⊙'],
775    \ ['oint'		, '∮'],
776    \ ['ominus'		, '⊖'],
777    \ ['oplus'		, '⊕'],
778    \ ['oslash'		, '⊘'],
779    \ ['otimes'		, '⊗'],
780    \ ['owns'		, '∋'],
781    \ ['P'	        , '¶'],
782    \ ['parallel'	, '║'],
783    \ ['partial'	, '∂'],
784    \ ['perp'		, '⊥'],
785    \ ['pm'		, '±'],
786    \ ['prec'		, '≺'],
787    \ ['preceq'		, '⪯'],
788    \ ['prime'		, '′'],
789    \ ['prod'		, '∏'],
790    \ ['propto'		, '∝'],
791    \ ['rceil'		, '⌉'],
792    \ ['Re'		, 'ℜ'],
793    \ ['rfloor'		, '⌋'],
794    \ ['right)'		, ')'],
795    \ ['right]'		, ']'],
796    \ ['right\\}'	, '}'],
797    \ ['rightarrow'	, '→'],
798    \ ['Rightarrow'	, '⇒'],
799    \ ['rightleftharpoons', '⇌'],
800    \ ['rmoustache'     , '╮'],
801    \ ['S'	        , '§'],
802    \ ['searrow'	, '↘'],
803    \ ['setminus'	, '∖'],
804    \ ['sharp'		, '♯'],
805    \ ['sim'		, '∼'],
806    \ ['simeq'		, '⋍'],
807    \ ['smile'		, '‿'],
808    \ ['spadesuit'	, '♠'],
809    \ ['sqcap'		, '⊓'],
810    \ ['sqcup'		, '⊔'],
811    \ ['sqsubset'	, '⊏'],
812    \ ['sqsubseteq'	, '⊑'],
813    \ ['sqsupset'	, '⊐'],
814    \ ['sqsupseteq'	, '⊒'],
815    \ ['star'		, '✫'],
816    \ ['subset'		, '⊂'],
817    \ ['subseteq'	, '⊆'],
818    \ ['succ'		, '≻'],
819    \ ['succeq'		, '⪰'],
820    \ ['sum'		, '∑'],
821    \ ['supset'		, '⊃'],
822    \ ['supseteq'	, '⊇'],
823    \ ['surd'		, '√'],
824    \ ['swarrow'	, '↙'],
825    \ ['times'		, '×'],
826    \ ['to'		, '→'],
827    \ ['top'		, '⊤'],
828    \ ['triangle'	, '∆'],
829    \ ['triangleleft'	, '⊲'],
830    \ ['triangleright'	, '⊳'],
831    \ ['uparrow'	, '↑'],
832    \ ['Uparrow'	, '⇑'],
833    \ ['updownarrow'	, '↕'],
834    \ ['Updownarrow'	, '⇕'],
835    \ ['vdash'		, '⊢'],
836    \ ['vdots'		, '⋮'],
837    \ ['vee'		, '∨'],
838    \ ['wedge'		, '∧'],
839    \ ['wp'		, '℘'],
840    \ ['wr'		, '≀']]
841  if &ambw == "double" || exists("g:tex_usedblwidth")
842    let s:texMathList= s:texMathList + [
843    \ ['right\\rangle'	, '〉'],
844    \ ['left\\langle'	, '〈']]
845  else
846    let s:texMathList= s:texMathList + [
847    \ ['right\\rangle'	, '>'],
848    \ ['left\\langle'	, '<']]
849  endif
850  for texmath in s:texMathList
851   if texmath[0] =~# '\w$'
852    exe "syn match texMathSymbol '\\\\".texmath[0]."\\>' contained conceal cchar=".texmath[1]
853   else
854    exe "syn match texMathSymbol '\\\\".texmath[0]."' contained conceal cchar=".texmath[1]
855   endif
856  endfor
857
858  if &ambw == "double"
859   syn match texMathSymbol '\\gg\>'			contained conceal cchar=≫
860   syn match texMathSymbol '\\ll\>'			contained conceal cchar=≪
861  else
862   syn match texMathSymbol '\\gg\>'			contained conceal cchar=⟫
863   syn match texMathSymbol '\\ll\>'			contained conceal cchar=⟪
864  endif
865
866  syn match texMathSymbol '\\hat{a}' contained conceal cchar=â
867  syn match texMathSymbol '\\hat{A}' contained conceal cchar=Â
868  syn match texMathSymbol '\\hat{c}' contained conceal cchar=ĉ
869  syn match texMathSymbol '\\hat{C}' contained conceal cchar=Ĉ
870  syn match texMathSymbol '\\hat{e}' contained conceal cchar=ê
871  syn match texMathSymbol '\\hat{E}' contained conceal cchar=Ê
872  syn match texMathSymbol '\\hat{g}' contained conceal cchar=ĝ
873  syn match texMathSymbol '\\hat{G}' contained conceal cchar=Ĝ
874  syn match texMathSymbol '\\hat{i}' contained conceal cchar=î
875  syn match texMathSymbol '\\hat{I}' contained conceal cchar=Î
876  syn match texMathSymbol '\\hat{o}' contained conceal cchar=ô
877  syn match texMathSymbol '\\hat{O}' contained conceal cchar=Ô
878  syn match texMathSymbol '\\hat{s}' contained conceal cchar=ŝ
879  syn match texMathSymbol '\\hat{S}' contained conceal cchar=Ŝ
880  syn match texMathSymbol '\\hat{u}' contained conceal cchar=û
881  syn match texMathSymbol '\\hat{U}' contained conceal cchar=Û
882  syn match texMathSymbol '\\hat{w}' contained conceal cchar=ŵ
883  syn match texMathSymbol '\\hat{W}' contained conceal cchar=Ŵ
884  syn match texMathSymbol '\\hat{y}' contained conceal cchar=ŷ
885  syn match texMathSymbol '\\hat{Y}' contained conceal cchar=Ŷ
886"  syn match texMathSymbol '\\bar{a}' contained conceal cchar=a̅
887
888  syn match texMathSymbol '\\dot{B}' contained conceal cchar=Ḃ
889  syn match texMathSymbol '\\dot{b}' contained conceal cchar=ḃ
890  syn match texMathSymbol '\\dot{D}' contained conceal cchar=Ḋ
891  syn match texMathSymbol '\\dot{d}' contained conceal cchar=ḋ
892  syn match texMathSymbol '\\dot{F}' contained conceal cchar=Ḟ
893  syn match texMathSymbol '\\dot{f}' contained conceal cchar=ḟ
894  syn match texMathSymbol '\\dot{H}' contained conceal cchar=Ḣ
895  syn match texMathSymbol '\\dot{h}' contained conceal cchar=ḣ
896  syn match texMathSymbol '\\dot{M}' contained conceal cchar=Ṁ
897  syn match texMathSymbol '\\dot{m}' contained conceal cchar=ṁ
898  syn match texMathSymbol '\\dot{N}' contained conceal cchar=Ṅ
899  syn match texMathSymbol '\\dot{n}' contained conceal cchar=ṅ
900  syn match texMathSymbol '\\dot{P}' contained conceal cchar=Ṗ
901  syn match texMathSymbol '\\dot{p}' contained conceal cchar=ṗ
902  syn match texMathSymbol '\\dot{R}' contained conceal cchar=Ṙ
903  syn match texMathSymbol '\\dot{r}' contained conceal cchar=ṙ
904  syn match texMathSymbol '\\dot{S}' contained conceal cchar=Ṡ
905  syn match texMathSymbol '\\dot{s}' contained conceal cchar=ṡ
906  syn match texMathSymbol '\\dot{T}' contained conceal cchar=Ṫ
907  syn match texMathSymbol '\\dot{t}' contained conceal cchar=ṫ
908  syn match texMathSymbol '\\dot{W}' contained conceal cchar=Ẇ
909  syn match texMathSymbol '\\dot{w}' contained conceal cchar=ẇ
910  syn match texMathSymbol '\\dot{X}' contained conceal cchar=Ẋ
911  syn match texMathSymbol '\\dot{x}' contained conceal cchar=ẋ
912  syn match texMathSymbol '\\dot{Y}' contained conceal cchar=Ẏ
913  syn match texMathSymbol '\\dot{y}' contained conceal cchar=ẏ
914  syn match texMathSymbol '\\dot{Z}' contained conceal cchar=Ż
915  syn match texMathSymbol '\\dot{z}' contained conceal cchar=ż
916
917  syn match texMathSymbol '\\dot{C}' contained conceal cchar=Ċ
918  syn match texMathSymbol '\\dot{c}' contained conceal cchar=ċ
919  syn match texMathSymbol '\\dot{E}' contained conceal cchar=Ė
920  syn match texMathSymbol '\\dot{e}' contained conceal cchar=ė
921  syn match texMathSymbol '\\dot{G}' contained conceal cchar=Ġ
922  syn match texMathSymbol '\\dot{g}' contained conceal cchar=ġ
923  syn match texMathSymbol '\\dot{I}' contained conceal cchar=İ
924
925  syn match texMathSymbol '\\dot{A}' contained conceal cchar=Ȧ
926  syn match texMathSymbol '\\dot{a}' contained conceal cchar=ȧ
927  syn match texMathSymbol '\\dot{O}' contained conceal cchar=Ȯ
928  syn match texMathSymbol '\\dot{o}' contained conceal cchar=ȯ
929 endif
930
931 " Greek {{{2
932 if s:tex_conceal =~# 'g'
933  fun! s:Greek(group,pat,cchar)
934    exe 'syn match '.a:group." '".a:pat."' contained conceal cchar=".a:cchar
935  endfun
936  call s:Greek('texGreek','\\alpha\>'		,'α')
937  call s:Greek('texGreek','\\beta\>'		,'β')
938  call s:Greek('texGreek','\\gamma\>'		,'γ')
939  call s:Greek('texGreek','\\delta\>'		,'δ')
940  call s:Greek('texGreek','\\epsilon\>'		,'ϵ')
941  call s:Greek('texGreek','\\varepsilon\>'	,'ε')
942  call s:Greek('texGreek','\\zeta\>'		,'ζ')
943  call s:Greek('texGreek','\\eta\>'		,'η')
944  call s:Greek('texGreek','\\theta\>'		,'θ')
945  call s:Greek('texGreek','\\vartheta\>'	,'ϑ')
946  call s:Greek('texGreek','\\kappa\>'		,'κ')
947  call s:Greek('texGreek','\\lambda\>'		,'λ')
948  call s:Greek('texGreek','\\mu\>'		,'μ')
949  call s:Greek('texGreek','\\nu\>'		,'ν')
950  call s:Greek('texGreek','\\xi\>'		,'ξ')
951  call s:Greek('texGreek','\\pi\>'		,'π')
952  call s:Greek('texGreek','\\varpi\>'		,'ϖ')
953  call s:Greek('texGreek','\\rho\>'		,'ρ')
954  call s:Greek('texGreek','\\varrho\>'		,'ϱ')
955  call s:Greek('texGreek','\\sigma\>'		,'σ')
956  call s:Greek('texGreek','\\varsigma\>'	,'ς')
957  call s:Greek('texGreek','\\tau\>'		,'τ')
958  call s:Greek('texGreek','\\upsilon\>'		,'υ')
959  call s:Greek('texGreek','\\phi\>'		,'ϕ')
960  call s:Greek('texGreek','\\varphi\>'		,'φ')
961  call s:Greek('texGreek','\\chi\>'		,'χ')
962  call s:Greek('texGreek','\\psi\>'		,'ψ')
963  call s:Greek('texGreek','\\omega\>'		,'ω')
964  call s:Greek('texGreek','\\Gamma\>'		,'Γ')
965  call s:Greek('texGreek','\\Delta\>'		,'Δ')
966  call s:Greek('texGreek','\\Theta\>'		,'Θ')
967  call s:Greek('texGreek','\\Lambda\>'		,'Λ')
968  call s:Greek('texGreek','\\Xi\>'		,'Χ')
969  call s:Greek('texGreek','\\Pi\>'		,'Π')
970  call s:Greek('texGreek','\\Sigma\>'		,'Σ')
971  call s:Greek('texGreek','\\Upsilon\>'		,'Υ')
972  call s:Greek('texGreek','\\Phi\>'		,'Φ')
973  call s:Greek('texGreek','\\Psi\>'		,'Ψ')
974  call s:Greek('texGreek','\\Omega\>'		,'Ω')
975  delfun s:Greek
976 endif
977
978 " Superscripts/Subscripts {{{2
979 if s:tex_conceal =~# 's'
980  if s:tex_fast =~# 's'
981   syn region texSuperscript	matchgroup=Delimiter start='\^{'	skip="\\\\\|\\[{}]" end='}'	contained concealends contains=texSpecialChar,texSuperscripts,texStatement,texSubscript,texSuperscript,texMathMatcher
982   syn region texSubscript	matchgroup=Delimiter start='_{'		skip="\\\\\|\\[{}]" end='}'	contained concealends contains=texSpecialChar,texSubscripts,texStatement,texSubscript,texSuperscript,texMathMatcher
983  endif
984  " s:SuperSub:
985  fun! s:SuperSub(group,leader,pat,cchar)
986    if a:pat =~# '^\\' || (a:leader == '\^' && a:pat =~# s:tex_superscripts) || (a:leader == '_' && a:pat =~# s:tex_subscripts)
987"     call Decho("SuperSub: group<".a:group."> leader<".a:leader."> pat<".a:pat."> cchar<".a:cchar.">")
988     exe 'syn match '.a:group." '".a:leader.a:pat."' contained conceal cchar=".a:cchar
989     exe 'syn match '.a:group."s '".a:pat        ."' contained conceal cchar=".a:cchar.' nextgroup='.a:group.'s'
990    endif
991  endfun
992  call s:SuperSub('texSuperscript','\^','0','⁰')
993  call s:SuperSub('texSuperscript','\^','1','¹')
994  call s:SuperSub('texSuperscript','\^','2','²')
995  call s:SuperSub('texSuperscript','\^','3','³')
996  call s:SuperSub('texSuperscript','\^','4','⁴')
997  call s:SuperSub('texSuperscript','\^','5','⁵')
998  call s:SuperSub('texSuperscript','\^','6','⁶')
999  call s:SuperSub('texSuperscript','\^','7','⁷')
1000  call s:SuperSub('texSuperscript','\^','8','⁸')
1001  call s:SuperSub('texSuperscript','\^','9','⁹')
1002  call s:SuperSub('texSuperscript','\^','a','ᵃ')
1003  call s:SuperSub('texSuperscript','\^','b','ᵇ')
1004  call s:SuperSub('texSuperscript','\^','c','ᶜ')
1005  call s:SuperSub('texSuperscript','\^','d','ᵈ')
1006  call s:SuperSub('texSuperscript','\^','e','ᵉ')
1007  call s:SuperSub('texSuperscript','\^','f','ᶠ')
1008  call s:SuperSub('texSuperscript','\^','g','ᵍ')
1009  call s:SuperSub('texSuperscript','\^','h','ʰ')
1010  call s:SuperSub('texSuperscript','\^','i','ⁱ')
1011  call s:SuperSub('texSuperscript','\^','j','ʲ')
1012  call s:SuperSub('texSuperscript','\^','k','ᵏ')
1013  call s:SuperSub('texSuperscript','\^','l','ˡ')
1014  call s:SuperSub('texSuperscript','\^','m','ᵐ')
1015  call s:SuperSub('texSuperscript','\^','n','ⁿ')
1016  call s:SuperSub('texSuperscript','\^','o','ᵒ')
1017  call s:SuperSub('texSuperscript','\^','p','ᵖ')
1018  call s:SuperSub('texSuperscript','\^','r','ʳ')
1019  call s:SuperSub('texSuperscript','\^','s','ˢ')
1020  call s:SuperSub('texSuperscript','\^','t','ᵗ')
1021  call s:SuperSub('texSuperscript','\^','u','ᵘ')
1022  call s:SuperSub('texSuperscript','\^','v','ᵛ')
1023  call s:SuperSub('texSuperscript','\^','w','ʷ')
1024  call s:SuperSub('texSuperscript','\^','x','ˣ')
1025  call s:SuperSub('texSuperscript','\^','y','ʸ')
1026  call s:SuperSub('texSuperscript','\^','z','ᶻ')
1027  call s:SuperSub('texSuperscript','\^','A','ᴬ')
1028  call s:SuperSub('texSuperscript','\^','B','ᴮ')
1029  call s:SuperSub('texSuperscript','\^','D','ᴰ')
1030  call s:SuperSub('texSuperscript','\^','E','ᴱ')
1031  call s:SuperSub('texSuperscript','\^','G','ᴳ')
1032  call s:SuperSub('texSuperscript','\^','H','ᴴ')
1033  call s:SuperSub('texSuperscript','\^','I','ᴵ')
1034  call s:SuperSub('texSuperscript','\^','J','ᴶ')
1035  call s:SuperSub('texSuperscript','\^','K','ᴷ')
1036  call s:SuperSub('texSuperscript','\^','L','ᴸ')
1037  call s:SuperSub('texSuperscript','\^','M','ᴹ')
1038  call s:SuperSub('texSuperscript','\^','N','ᴺ')
1039  call s:SuperSub('texSuperscript','\^','O','ᴼ')
1040  call s:SuperSub('texSuperscript','\^','P','ᴾ')
1041  call s:SuperSub('texSuperscript','\^','R','ᴿ')
1042  call s:SuperSub('texSuperscript','\^','T','ᵀ')
1043  call s:SuperSub('texSuperscript','\^','U','ᵁ')
1044  call s:SuperSub('texSuperscript','\^','W','ᵂ')
1045  call s:SuperSub('texSuperscript','\^',',','︐')
1046  call s:SuperSub('texSuperscript','\^',':','︓')
1047  call s:SuperSub('texSuperscript','\^',';','︔')
1048  call s:SuperSub('texSuperscript','\^','+','⁺')
1049  call s:SuperSub('texSuperscript','\^','-','⁻')
1050  call s:SuperSub('texSuperscript','\^','<','˂')
1051  call s:SuperSub('texSuperscript','\^','>','˃')
1052  call s:SuperSub('texSuperscript','\^','/','ˊ')
1053  call s:SuperSub('texSuperscript','\^','(','⁽')
1054  call s:SuperSub('texSuperscript','\^',')','⁾')
1055  call s:SuperSub('texSuperscript','\^','\.','˙')
1056  call s:SuperSub('texSuperscript','\^','=','˭')
1057  call s:SuperSub('texSubscript','_','0','₀')
1058  call s:SuperSub('texSubscript','_','1','₁')
1059  call s:SuperSub('texSubscript','_','2','₂')
1060  call s:SuperSub('texSubscript','_','3','₃')
1061  call s:SuperSub('texSubscript','_','4','₄')
1062  call s:SuperSub('texSubscript','_','5','₅')
1063  call s:SuperSub('texSubscript','_','6','₆')
1064  call s:SuperSub('texSubscript','_','7','₇')
1065  call s:SuperSub('texSubscript','_','8','₈')
1066  call s:SuperSub('texSubscript','_','9','₉')
1067  call s:SuperSub('texSubscript','_','a','ₐ')
1068  call s:SuperSub('texSubscript','_','e','ₑ')
1069  call s:SuperSub('texSubscript','_','h','ₕ')
1070  call s:SuperSub('texSubscript','_','i','ᵢ')
1071  call s:SuperSub('texSubscript','_','j','ⱼ')
1072  call s:SuperSub('texSubscript','_','k','ₖ')
1073  call s:SuperSub('texSubscript','_','l','ₗ')
1074  call s:SuperSub('texSubscript','_','m','ₘ')
1075  call s:SuperSub('texSubscript','_','n','ₙ')
1076  call s:SuperSub('texSubscript','_','o','ₒ')
1077  call s:SuperSub('texSubscript','_','p','ₚ')
1078  call s:SuperSub('texSubscript','_','r','ᵣ')
1079  call s:SuperSub('texSubscript','_','s','ₛ')
1080  call s:SuperSub('texSubscript','_','t','ₜ')
1081  call s:SuperSub('texSubscript','_','u','ᵤ')
1082  call s:SuperSub('texSubscript','_','v','ᵥ')
1083  call s:SuperSub('texSubscript','_','x','ₓ')
1084  call s:SuperSub('texSubscript','_',',','︐')
1085  call s:SuperSub('texSubscript','_','+','₊')
1086  call s:SuperSub('texSubscript','_','-','₋')
1087  call s:SuperSub('texSubscript','_','/','ˏ')
1088  call s:SuperSub('texSubscript','_','(','₍')
1089  call s:SuperSub('texSubscript','_',')','₎')
1090  call s:SuperSub('texSubscript','_','\.','‸')
1091  call s:SuperSub('texSubscript','_','r','ᵣ')
1092  call s:SuperSub('texSubscript','_','v','ᵥ')
1093  call s:SuperSub('texSubscript','_','x','ₓ')
1094  call s:SuperSub('texSubscript','_','\\beta\>' ,'ᵦ')
1095  call s:SuperSub('texSubscript','_','\\delta\>','ᵨ')
1096  call s:SuperSub('texSubscript','_','\\phi\>'  ,'ᵩ')
1097  call s:SuperSub('texSubscript','_','\\gamma\>','ᵧ')
1098  call s:SuperSub('texSubscript','_','\\chi\>'  ,'ᵪ')
1099
1100  delfun s:SuperSub
1101 endif
1102
1103 " Accented characters and Ligatures: {{{2
1104 if s:tex_conceal =~# 'a'
1105  if b:tex_stylish
1106   syn match texAccent		"\\[bcdvuH][^a-zA-Z@]"me=e-1
1107   syn match texLigature	"\\\([ijolL]\|ae\|oe\|ss\|AA\|AE\|OE\)[^a-zA-Z@]"me=e-1
1108   syn match texLigature	'--'
1109   syn match texLigature	'---'
1110  else
1111   fun! s:Accents(chr,...)
1112     let i= 1
1113     for accent in ["`","\\'","^",'"','\~','\.','=',"c","H","k","r","u","v"]
1114      if i > a:0
1115       break
1116      endif
1117      if strlen(a:{i}) == 0 || a:{i} == ' ' || a:{i} == '?'
1118       let i= i + 1
1119       continue
1120      endif
1121      if accent =~# '\a'
1122       exe "syn match texAccent '".'\\'.accent.'\(\s*{'.a:chr.'}\|\s\+'.a:chr.'\)'."' conceal cchar=".a:{i}
1123      else
1124       exe "syn match texAccent '".'\\'.accent.'\s*\({'.a:chr.'}\|'.a:chr.'\)'."' conceal cchar=".a:{i}
1125      endif
1126      let i= i + 1
1127     endfor
1128   endfun
1129   "                  \`  \'  \^  \"  \~  \.  \=  \c  \H  \k  \r  \u  \v
1130   call s:Accents('a','à','á','â','ä','ã','ȧ','ā',' ',' ','ą','å','ă','ǎ')
1131   call s:Accents('A','À','Á','Â','Ä','Ã','Ȧ','Ā',' ',' ','Ą','Å','Ă','Ǎ')
1132   call s:Accents('c',' ','ć','ĉ',' ',' ','ċ',' ','ç',' ',' ',' ',' ','č')
1133   call s:Accents('C',' ','Ć','Ĉ',' ',' ','Ċ',' ','Ç',' ',' ',' ',' ','Č')
1134   call s:Accents('d',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','ď')
1135   call s:Accents('D',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','Ď')
1136   call s:Accents('e','è','é','ê','ë','ẽ','ė','ē','ȩ',' ','ę',' ','ĕ','ě')
1137   call s:Accents('E','È','É','Ê','Ë','Ẽ','Ė','Ē','Ȩ',' ','Ę',' ','Ĕ','Ě')
1138   call s:Accents('g',' ','ǵ','ĝ',' ',' ','ġ',' ','ģ',' ',' ',' ','ğ','ǧ')
1139   call s:Accents('G',' ','Ǵ','Ĝ',' ',' ','Ġ',' ','Ģ',' ',' ',' ','Ğ','Ǧ')
1140   call s:Accents('h',' ',' ','ĥ',' ',' ',' ',' ',' ',' ',' ',' ',' ','ȟ')
1141   call s:Accents('H',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','Ȟ')
1142   call s:Accents('i','ì','í','î','ï','ĩ','į','ī',' ',' ','į',' ','ĭ','ǐ')
1143   call s:Accents('I','Ì','Í','Î','Ï','Ĩ','İ','Ī',' ',' ','Į',' ','Ĭ','Ǐ')
1144   call s:Accents('J',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','ǰ')
1145   call s:Accents('k',' ',' ',' ',' ',' ',' ',' ','ķ',' ',' ',' ',' ','ǩ')
1146   call s:Accents('K',' ',' ',' ',' ',' ',' ',' ','Ķ',' ',' ',' ',' ','Ǩ')
1147   call s:Accents('l',' ','ĺ','ľ',' ',' ',' ',' ','ļ',' ',' ',' ',' ','ľ')
1148   call s:Accents('L',' ','Ĺ','Ľ',' ',' ',' ',' ','Ļ',' ',' ',' ',' ','Ľ')
1149   call s:Accents('n',' ','ń',' ',' ','ñ',' ',' ','ņ',' ',' ',' ',' ','ň')
1150   call s:Accents('N',' ','Ń',' ',' ','Ñ',' ',' ','Ņ',' ',' ',' ',' ','Ň')
1151   call s:Accents('o','ò','ó','ô','ö','õ','ȯ','ō',' ','ő','ǫ',' ','ŏ','ǒ')
1152   call s:Accents('O','Ò','Ó','Ô','Ö','Õ','Ȯ','Ō',' ','Ő','Ǫ',' ','Ŏ','Ǒ')
1153   call s:Accents('r',' ','ŕ',' ',' ',' ',' ',' ','ŗ',' ',' ',' ',' ','ř')
1154   call s:Accents('R',' ','Ŕ',' ',' ',' ',' ',' ','Ŗ',' ',' ',' ',' ','Ř')
1155   call s:Accents('s',' ','ś','ŝ',' ',' ',' ',' ','ş',' ','ȿ',' ',' ','š')
1156   call s:Accents('S',' ','Ś','Ŝ',' ',' ',' ',' ','Ş',' ',' ',' ',' ','Š')
1157   call s:Accents('t',' ',' ',' ',' ',' ',' ',' ','ţ',' ',' ',' ',' ','ť')
1158   call s:Accents('T',' ',' ',' ',' ',' ',' ',' ','Ţ',' ',' ',' ',' ','Ť')
1159   call s:Accents('u','ù','ú','û','ü','ũ',' ','ū',' ','ű','ų','ů','ŭ','ǔ')
1160   call s:Accents('U','Ù','Ú','Û','Ü','Ũ',' ','Ū',' ','Ű','Ų','Ů','Ŭ','Ǔ')
1161   call s:Accents('w',' ',' ','ŵ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ')
1162   call s:Accents('W',' ',' ','Ŵ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ')
1163   call s:Accents('y','ỳ','ý','ŷ','ÿ','ỹ',' ',' ',' ',' ',' ',' ',' ',' ')
1164   call s:Accents('Y','Ỳ','Ý','Ŷ','Ÿ','Ỹ',' ',' ',' ',' ',' ',' ',' ',' ')
1165   call s:Accents('z',' ','ź',' ',' ',' ','ż',' ',' ',' ',' ',' ',' ','ž')
1166   call s:Accents('Z',' ','Ź',' ',' ',' ','Ż',' ',' ',' ',' ',' ',' ','Ž')
1167   call s:Accents('\\i','ì','í','î','ï','ĩ','į',' ',' ',' ',' ',' ','ĭ',' ')
1168   "                    \`  \'  \^  \"  \~  \.  \=  \c  \H  \k  \r  \u  \v
1169   delfun s:Accents
1170   syn match texAccent		'\\aa\>'	conceal cchar=å
1171   syn match texAccent		'\\AA\>'	conceal cchar=Å
1172   syn match texAccent		'\\o\>'		conceal cchar=ø
1173   syn match texAccent		'\\O\>'		conceal cchar=Ø
1174   syn match texLigature	'\\AE\>'	conceal cchar=Æ
1175   syn match texLigature	'\\ae\>'	conceal cchar=æ
1176   syn match texLigature	'\\oe\>'	conceal cchar=œ
1177   syn match texLigature	'\\OE\>'	conceal cchar=Œ
1178   syn match texLigature	'\\ss\>'	conceal cchar=ß
1179   syn match texLigature	'--'		conceal cchar=–
1180   syn match texLigature	'---'		conceal cchar=—
1181  endif
1182 endif
1183endif
1184
1185" ---------------------------------------------------------------------
1186" LaTeX synchronization: {{{1
1187syn sync maxlines=200
1188syn sync minlines=50
1189
1190syn  sync match texSyncStop			groupthere NONE		"%stopzone\>"
1191
1192" Synchronization: {{{1
1193" The $..$ and $$..$$ make for impossible sync patterns
1194" (one can't tell if a "$$" starts or stops a math zone by itself)
1195" The following grouptheres coupled with minlines above
1196" help improve the odds of good syncing.
1197if !exists("g:tex_no_math")
1198 syn sync match texSyncMathZoneA		groupthere NONE		"\\end{abstract}"
1199 syn sync match texSyncMathZoneA		groupthere NONE		"\\end{center}"
1200 syn sync match texSyncMathZoneA		groupthere NONE		"\\end{description}"
1201 syn sync match texSyncMathZoneA		groupthere NONE		"\\end{enumerate}"
1202 syn sync match texSyncMathZoneA		groupthere NONE		"\\end{itemize}"
1203 syn sync match texSyncMathZoneA		groupthere NONE		"\\end{table}"
1204 syn sync match texSyncMathZoneA		groupthere NONE		"\\end{tabular}"
1205 syn sync match texSyncMathZoneA		groupthere NONE		"\\\(sub\)*section\>"
1206endif
1207
1208" ---------------------------------------------------------------------
1209" Highlighting: {{{1
1210
1211" Define the default highlighting. {{{1
1212if !exists("skip_tex_syntax_inits")
1213
1214  " TeX highlighting groups which should share similar highlighting
1215  if !exists("g:tex_no_error")
1216   if !exists("g:tex_no_math")
1217    hi def link texBadMath		texError
1218    hi def link texMathDelimBad		texError
1219    hi def link texMathError		texError
1220    if !b:tex_stylish
1221      hi def link texOnlyMath		texError
1222    endif
1223   endif
1224   hi def link texError			Error
1225  endif
1226
1227  hi texBoldStyle		gui=bold	cterm=bold
1228  hi texItalStyle		gui=italic	cterm=italic
1229  hi texBoldItalStyle		gui=bold,italic cterm=bold,italic
1230  hi texItalBoldStyle		gui=bold,italic cterm=bold,italic
1231  hi def link texCite		texRefZone
1232  hi def link texDefCmd		texDef
1233  hi def link texDefName	texDef
1234  hi def link texDocType	texCmdName
1235  hi def link texDocTypeArgs	texCmdArgs
1236  hi def link texInputFileOpt	texCmdArgs
1237  hi def link texInputCurlies	texDelimiter
1238  hi def link texLigature	texSpecialChar
1239  if !exists("g:tex_no_math")
1240   hi def link texMathDelimSet1	texMathDelim
1241   hi def link texMathDelimSet2	texMathDelim
1242   hi def link texMathDelimKey	texMathDelim
1243   hi def link texMathMatcher	texMath
1244   hi def link texAccent	texStatement
1245   hi def link texGreek		texStatement
1246   hi def link texSuperscript	texStatement
1247   hi def link texSubscript	texStatement
1248   hi def link texSuperscripts 	texSuperscript
1249   hi def link texSubscripts 	texSubscript
1250   hi def link texMathSymbol	texStatement
1251   hi def link texMathZoneV	texMath
1252   hi def link texMathZoneW	texMath
1253   hi def link texMathZoneX	texMath
1254   hi def link texMathZoneY	texMath
1255   hi def link texMathZoneV	texMath
1256   hi def link texMathZoneZ	texMath
1257  endif
1258  hi def link texBeginEnd	texCmdName
1259  hi def link texBeginEndName	texSection
1260  hi def link texSpaceCode	texStatement
1261  hi def link texStyleStatement	texStatement
1262  hi def link texTypeSize	texType
1263  hi def link texTypeStyle	texType
1264
1265   " Basic TeX highlighting groups
1266  hi def link texCmdArgs	Number
1267  hi def link texCmdName	Statement
1268  hi def link texComment	Comment
1269  hi def link texDef		Statement
1270  hi def link texDefParm	Special
1271  hi def link texDelimiter	Delimiter
1272  hi def link texInput		Special
1273  hi def link texInputFile	Special
1274  hi def link texLength		Number
1275  hi def link texMath		Special
1276  hi def link texMathDelim	Statement
1277  hi def link texMathOper	Operator
1278  hi def link texNewCmd		Statement
1279  hi def link texNewEnv		Statement
1280  hi def link texOption		Number
1281  hi def link texRefZone	Special
1282  hi def link texSection	PreCondit
1283  hi def link texSpaceCodeChar	Special
1284  hi def link texSpecialChar	SpecialChar
1285  hi def link texStatement	Statement
1286  hi def link texString		String
1287  hi def link texTodo		Todo
1288  hi def link texType		Type
1289  hi def link texZone		PreCondit
1290
1291endif
1292
1293" Cleanup: {{{1
1294delc TexFold
1295unlet s:extfname
1296let   b:current_syntax = "tex"
1297let &cpo               = s:keepcpo
1298unlet s:keepcpo
1299" vim: ts=8 fdm=marker
1300