xref: /vim-8.2.3635/runtime/syntax/tex.vim (revision 84a05acc) 
1" Vim syntax file
2" Language:	TeX
3" Maintainer:	Charles E. Campbell <[email protected]>
4" Last Change:	Mar 11, 2013
5" Version:	77
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" Version Clears: {{{1
33" For version 5.x: Clear all syntax items
34" For version 6.x: Quit when a syntax file was already loaded
35if version < 600
36  syntax clear
37elseif exists("b:current_syntax")
38  finish
39endif
40let s:keepcpo= &cpo
41set cpo&vim
42scriptencoding utf-8
43
44" Define the default highlighting. {{{1
45" For version 5.7 and earlier: only when not done already
46" For version 5.8 and later: only when an item doesn't have highlighting yet
47if version >= 508 || !exists("did_tex_syntax_inits")
48 let did_tex_syntax_inits = 1
49 if version < 508
50  command -nargs=+ HiLink hi link <args>
51 else
52  command -nargs=+ HiLink hi def link <args>
53 endif
54endif
55if exists("g:tex_no_error") && g:tex_no_error
56 let s:tex_no_error= 1
57endif
58if exists("g:tex_fast") && g:tex_fast
59 let s:tex_no_error= 1
60endif
61if exists("g:tex_tex") && !exists("g:tex_no_error")
62 let s:tex_no_error= 1
63endif
64
65" let user determine which classes of concealment will be supported
66"   a=accents/ligatures d=delimiters m=math symbols  g=Greek  s=superscripts/subscripts
67if !exists("g:tex_conceal")
68 let s:tex_conceal= 'abdmgs'
69else
70 let s:tex_conceal= g:tex_conceal
71endif
72
73" Determine whether or not to use "*.sty" mode {{{1
74" The user may override the normal determination by setting
75"   g:tex_stylish to 1      (for    "*.sty" mode)
76"    or to           0 else (normal "*.tex" mode)
77" or on a buffer-by-buffer basis with b:tex_stylish
78let s:extfname=expand("%:e")
79if exists("g:tex_stylish")
80 let b:tex_stylish= g:tex_stylish
81elseif !exists("b:tex_stylish")
82 if s:extfname == "sty" || s:extfname == "cls" || s:extfname == "clo" || s:extfname == "dtx" || s:extfname == "ltx"
83  let b:tex_stylish= 1
84 else
85  let b:tex_stylish= 0
86 endif
87endif
88
89" handle folding {{{1
90if !exists("g:tex_fold_enabled")
91 let g:tex_fold_enabled= 0
92elseif g:tex_fold_enabled && !has("folding")
93 let g:tex_fold_enabled= 0
94 echomsg "Ignoring g:tex_fold_enabled=".g:tex_fold_enabled."; need to re-compile vim for +fold support"
95endif
96if g:tex_fold_enabled && &fdm == "manual"
97 setl fdm=syntax
98endif
99
100" (La)TeX keywords: uses the characters 0-9,a-z,A-Z,192-255 only... {{{1
101" but _ is the only one that causes problems.
102" One may override this iskeyword setting by providing
103" g:tex_isk
104if exists("g:tex_isk")
105 exe "setlocal isk=".g:tex_isk
106else
107 setlocal isk=48-57,a-z,A-Z,192-255
108endif
109if b:tex_stylish
110  setlocal isk+=@-@
111endif
112if exists("g:tex_nospell") && g:tex_nospell && !exists("g:tex_comment_nospell")
113 let g:tex_comment_nospell= 1
114endif
115
116" Clusters: {{{1
117" --------
118syn cluster texCmdGroup		contains=texCmdBody,texComment,texDefParm,texDelimiter,texDocType,texInput,texLength,texLigature,texMathDelim,texMathOper,texNewCmd,texNewEnv,texRefZone,texSection,texBeginEnd,texBeginEndName,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle
119if !exists("s:tex_no_error")
120 syn cluster texCmdGroup	add=texMathError
121endif
122syn cluster texEnvGroup		contains=texMatcher,texMathDelim,texSpecialChar,texStatement
123syn 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
124syn 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
125syn 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
126if !exists("g:tex_nospell") || !g:tex_nospell
127 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
128 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
129else
130 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
131 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
132endif
133syn cluster texPreambleMatchGroup	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
134syn cluster texRefGroup		contains=texMatcher,texComment,texDelimiter
135if !exists("tex_no_math")
136 syn cluster texMathZones	contains=texMathZoneV,texMathZoneW,texMathZoneX,texMathZoneY,texMathZoneZ
137 syn cluster texMatchGroup	add=@texMathZones
138 syn cluster texMathDelimGroup	contains=texMathDelimBad,texMathDelimKey,texMathDelimSet1,texMathDelimSet2
139 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
140 syn cluster texMathZoneGroup	contains=texComment,texDelimiter,texLength,texMathDelim,texMathMatcher,texMathOper,texMathSymbol,texMathText,texRefZone,texSpecialChar,texStatement,texTypeSize,texTypeStyle
141 if !exists("s:tex_no_error")
142  syn cluster texMathMatchGroup	add=texMathError
143  syn cluster texMathZoneGroup	add=texMathError
144 endif
145 syn cluster texMathZoneGroup add=@NoSpell
146 " following used in the \part \chapter \section \subsection \subsubsection
147 " \paragraph \subparagraph \author \title highlighting
148 syn cluster texDocGroup		contains=texPartZone,@texPartGroup
149 syn cluster texPartGroup		contains=texChapterZone,texSectionZone,texParaZone
150 syn cluster texChapterGroup		contains=texSectionZone,texParaZone
151 syn cluster texSectionGroup		contains=texSubSectionZone,texParaZone
152 syn cluster texSubSectionGroup		contains=texSubSubSectionZone,texParaZone
153 syn cluster texSubSubSectionGroup	contains=texParaZone
154 syn cluster texParaGroup		contains=texSubParaZone
155 if has("conceal") && &enc == 'utf-8'
156  syn cluster texMathZoneGroup	add=texGreek,texSuperscript,texSubscript,texMathSymbol
157  syn cluster texMathMatchGroup	add=texGreek,texSuperscript,texSubscript,texMathSymbol
158 endif
159endif
160
161" Try to flag {} and () mismatches: {{{1
162if !exists("g:tex_fast") || g:tex_fast =~ 'm'
163  if !exists("s:tex_no_error")
164   syn region texMatcher		matchgroup=Delimiter start="{" skip="\\\\\|\\[{}]"	end="}"		contains=@texMatchGroup,texError
165   syn region texMatcher		matchgroup=Delimiter start="\["				end="]"		contains=@texMatchGroup,texError,@NoSpell
166  else
167   syn region texMatcher		matchgroup=Delimiter start="{" skip="\\\\\|\\[{}]"	end="}"		contains=@texMatchGroup
168   syn region texMatcher		matchgroup=Delimiter start="\["				end="]"		contains=@texMatchGroup
169  endif
170  if !exists("g:tex_nospell") || !g:tex_nospell
171   syn region texParen		start="("						end=")"		contains=@texMatchGroup,@Spell
172  else
173   syn region texParen		start="("						end=")"		contains=@texMatchGroup
174  endif
175endif
176if !exists("s:tex_no_error")
177 syn match  texError		"[}\])]"
178endif
179if !exists("g:tex_fast") || g:tex_fast =~ 'M'
180  if !exists("tex_no_math")
181   if !exists("s:tex_no_error")
182    syn match  texMathError	"}"	contained
183   endif
184   syn region texMathMatcher	matchgroup=Delimiter	start="{"          skip="\\\\\|\\}"     end="}" end="%stopzone\>"	contained contains=@texMathMatchGroup
185  endif
186endif
187
188" TeX/LaTeX keywords: {{{1
189" Instead of trying to be All Knowing, I just match \..alphameric..
190" Note that *.tex files may not have "@" in their \commands
191if exists("g:tex_tex") || b:tex_stylish
192  syn match texStatement	"\\[a-zA-Z@]\+"
193else
194  syn match texStatement	"\\\a\+"
195  if !exists("s:tex_no_error")
196   syn match texError		"\\\a*@[a-zA-Z@]*"
197  endif
198endif
199
200" TeX/LaTeX delimiters: {{{1
201syn match texDelimiter		"&"
202syn match texDelimiter		"\\\\"
203syn match texDelimiter		"[{}]"
204
205" Tex/Latex Options: {{{1
206syn match texOption		"[^\\]\zs#\d\+\|^#\d\+"
207
208" texAccent (tnx to Karim Belabas) avoids annoying highlighting for accents: {{{1
209if b:tex_stylish
210  syn match texAccent		"\\[bcdvuH][^a-zA-Z@]"me=e-1
211  syn match texLigature		"\\\([ijolL]\|ae\|oe\|ss\|AA\|AE\|OE\)[^a-zA-Z@]"me=e-1
212else
213  syn match texAccent		"\\[bcdvuH]\A"me=e-1
214  syn match texLigature		"\\\([ijolL]\|ae\|oe\|ss\|AA\|AE\|OE\)\A"me=e-1
215endif
216syn match texAccent		"\\[bcdvuH]$"
217syn match texAccent		+\\[=^.\~"`']+
218syn match texAccent		+\\['=t'.c^ud"vb~Hr]{\a}+
219syn match texLigature		"\\\([ijolL]\|ae\|oe\|ss\|AA\|AE\|OE\)$"
220
221" \begin{}/\end{} section markers: {{{1
222syn match  texBeginEnd		"\\begin\>\|\\end\>" nextgroup=texBeginEndName
223if !exists("g:tex_fast") || g:tex_fast =~ 'm'
224  syn region texBeginEndName	matchgroup=Delimiter	start="{"		end="}"	contained	nextgroup=texBeginEndModifier	contains=texComment
225  syn region texBeginEndModifier	matchgroup=Delimiter	start="\["		end="]"	contained	contains=texComment,@NoSpell
226endif
227
228" \documentclass, \documentstyle, \usepackage: {{{1
229syn match  texDocType		"\\documentclass\>\|\\documentstyle\>\|\\usepackage\>"	nextgroup=texBeginEndName,texDocTypeArgs
230if !exists("g:tex_fast") || g:tex_fast =~ 'm'
231  syn region texDocTypeArgs	matchgroup=Delimiter start="\[" end="]"			contained	nextgroup=texBeginEndName	contains=texComment,@NoSpell
232endif
233
234" Preamble syntax-based folding support: {{{1
235if g:tex_fold_enabled && has("folding")
236 syn region texPreamble	transparent fold	start='\zs\\documentclass\>' end='\ze\\begin{document}'	contains=texStyle,@texPreambleMatchGroup
237endif
238
239" TeX input: {{{1
240syn match texInput		"\\input\s\+[a-zA-Z/.0-9_^]\+"hs=s+7				contains=texStatement
241syn match texInputFile		"\\include\(graphics\|list\)\=\(\[.\{-}\]\)\=\s*{.\{-}}"	contains=texStatement,texInputCurlies,texInputFileOpt
242syn match texInputFile		"\\\(epsfig\|input\|usepackage\)\s*\(\[.*\]\)\={.\{-}}"		contains=texStatement,texInputCurlies,texInputFileOpt
243syn match texInputCurlies	"[{}]"								contained
244if !exists("g:tex_fast") || g:tex_fast =~ 'm'
245 syn region texInputFileOpt	matchgroup=Delimiter start="\[" end="\]"			contained	contains=texComment
246endif
247
248" Type Styles (LaTeX 2.09): {{{1
249syn match texTypeStyle		"\\rm\>"
250syn match texTypeStyle		"\\em\>"
251syn match texTypeStyle		"\\bf\>"
252syn match texTypeStyle		"\\it\>"
253syn match texTypeStyle		"\\sl\>"
254syn match texTypeStyle		"\\sf\>"
255syn match texTypeStyle		"\\sc\>"
256syn match texTypeStyle		"\\tt\>"
257
258" Type Styles: attributes, commands, families, etc (LaTeX2E): {{{1
259if s:tex_conceal !~ 'b'
260 syn match texTypeStyle		"\\textbf\>"
261 syn match texTypeStyle		"\\textit\>"
262endif
263syn match texTypeStyle		"\\textmd\>"
264syn match texTypeStyle		"\\textrm\>"
265syn match texTypeStyle		"\\textsc\>"
266syn match texTypeStyle		"\\textsf\>"
267syn match texTypeStyle		"\\textsl\>"
268syn match texTypeStyle		"\\texttt\>"
269syn match texTypeStyle		"\\textup\>"
270syn match texTypeStyle		"\\emph\>"
271
272syn match texTypeStyle		"\\mathbb\>"
273syn match texTypeStyle		"\\mathbf\>"
274syn match texTypeStyle		"\\mathcal\>"
275syn match texTypeStyle		"\\mathfrak\>"
276syn match texTypeStyle		"\\mathit\>"
277syn match texTypeStyle		"\\mathnormal\>"
278syn match texTypeStyle		"\\mathrm\>"
279syn match texTypeStyle		"\\mathsf\>"
280syn match texTypeStyle		"\\mathtt\>"
281
282syn match texTypeStyle		"\\rmfamily\>"
283syn match texTypeStyle		"\\sffamily\>"
284syn match texTypeStyle		"\\ttfamily\>"
285
286syn match texTypeStyle		"\\itshape\>"
287syn match texTypeStyle		"\\scshape\>"
288syn match texTypeStyle		"\\slshape\>"
289syn match texTypeStyle		"\\upshape\>"
290
291syn match texTypeStyle		"\\bfseries\>"
292syn match texTypeStyle		"\\mdseries\>"
293
294" Some type sizes: {{{1
295syn match texTypeSize		"\\tiny\>"
296syn match texTypeSize		"\\scriptsize\>"
297syn match texTypeSize		"\\footnotesize\>"
298syn match texTypeSize		"\\small\>"
299syn match texTypeSize		"\\normalsize\>"
300syn match texTypeSize		"\\large\>"
301syn match texTypeSize		"\\Large\>"
302syn match texTypeSize		"\\LARGE\>"
303syn match texTypeSize		"\\huge\>"
304syn match texTypeSize		"\\Huge\>"
305
306" Spacecodes (TeX'isms): {{{1
307" \mathcode`\^^@="2201  \delcode`\(="028300  \sfcode`\)=0 \uccode`X=`X  \lccode`x=`x
308syn match texSpaceCode		"\\\(math\|cat\|del\|lc\|sf\|uc\)code`"me=e-1 nextgroup=texSpaceCodeChar
309syn match texSpaceCodeChar    "`\\\=.\(\^.\)\==\(\d\|\"\x\{1,6}\|`.\)"	contained
310
311" Sections, subsections, etc: {{{1
312if !exists("g:tex_fast") || g:tex_fast =~ 'p'
313  if !exists("g:tex_nospell") || !g:tex_nospell
314   if g:tex_fold_enabled && has("folding")
315    syn region texDocZone			matchgroup=texSection start='\\begin\s*{\s*document\s*}' end='\\end\s*{\s*document\s*}'											fold contains=@texFoldGroup,@texDocGroup,@Spell
316    syn region texPartZone		matchgroup=texSection start='\\part\>'			 end='\ze\s*\\\%(part\>\|end\s*{\s*document\s*}\)'								fold contains=@texFoldGroup,@texPartGroup,@Spell
317    syn region texChapterZone		matchgroup=texSection start='\\chapter\>'		 end='\ze\s*\\\%(chapter\>\|part\>\|end\s*{\s*document\s*}\)'							fold contains=@texFoldGroup,@texChapterGroup,@Spell
318    syn region texSectionZone		matchgroup=texSection start='\\section\>'		 end='\ze\s*\\\%(section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'					fold contains=@texFoldGroup,@texSectionGroup,@Spell
319    syn region texSubSectionZone		matchgroup=texSection start='\\subsection\>'		 end='\ze\s*\\\%(\%(sub\)\=section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'				fold contains=@texFoldGroup,@texSubSectionGroup,@Spell
320    syn region texSubSubSectionZone	matchgroup=texSection start='\\subsubsection\>'		 end='\ze\s*\\\%(\%(sub\)\{,2}section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'				fold contains=@texFoldGroup,@texSubSubSectionGroup,@Spell
321    syn region texParaZone		matchgroup=texSection start='\\paragraph\>'		 end='\ze\s*\\\%(paragraph\>\|\%(sub\)*section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'			fold contains=@texFoldGroup,@texParaGroup,@Spell
322    syn region texSubParaZone		matchgroup=texSection start='\\subparagraph\>'		 end='\ze\s*\\\%(\%(sub\)\=paragraph\>\|\%(sub\)*section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'	fold contains=@texFoldGroup,@Spell
323    syn region texTitle			matchgroup=texSection start='\\\%(author\|title\)\>\s*{' end='}'													fold contains=@texFoldGroup,@Spell
324    syn region texAbstract		matchgroup=texSection start='\\begin\s*{\s*abstract\s*}' end='\\end\s*{\s*abstract\s*}'											fold contains=@texFoldGroup,@Spell
325   else
326    syn region texDocZone			matchgroup=texSection start='\\begin\s*{\s*document\s*}' end='\\end\s*{\s*document\s*}'											contains=@texFoldGroup,@texDocGroup,@Spell
327    syn region texPartZone		matchgroup=texSection start='\\part\>'			 end='\ze\s*\\\%(part\>\|end\s*{\s*document\s*}\)'								contains=@texFoldGroup,@texPartGroup,@Spell
328    syn region texChapterZone		matchgroup=texSection start='\\chapter\>'		 end='\ze\s*\\\%(chapter\>\|part\>\|end\s*{\s*document\s*}\)'							contains=@texFoldGroup,@texChapterGroup,@Spell
329    syn region texSectionZone		matchgroup=texSection start='\\section\>'		 end='\ze\s*\\\%(section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'					contains=@texFoldGroup,@texSectionGroup,@Spell
330    syn region texSubSectionZone		matchgroup=texSection start='\\subsection\>'		 end='\ze\s*\\\%(\%(sub\)\=section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'				contains=@texFoldGroup,@texSubSectionGroup,@Spell
331    syn region texSubSubSectionZone	matchgroup=texSection start='\\subsubsection\>'		 end='\ze\s*\\\%(\%(sub\)\{,2}section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'				contains=@texFoldGroup,@texSubSubSectionGroup,@Spell
332    syn region texParaZone		matchgroup=texSection start='\\paragraph\>'		 end='\ze\s*\\\%(paragraph\>\|\%(sub\)*section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'			contains=@texFoldGroup,@texParaGroup,@Spell
333    syn region texSubParaZone		matchgroup=texSection start='\\subparagraph\>'		 end='\ze\s*\\\%(\%(sub\)\=paragraph\>\|\%(sub\)*section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'	contains=@texFoldGroup,@Spell
334    syn region texTitle			matchgroup=texSection start='\\\%(author\|title\)\>\s*{' end='}'													contains=@texFoldGroup,@Spell
335    syn region texAbstract		matchgroup=texSection start='\\begin\s*{\s*abstract\s*}' end='\\end\s*{\s*abstract\s*}'											contains=@texFoldGroup,@Spell
336   endif
337  else
338   if g:tex_fold_enabled && has("folding")
339    syn region texDocZone			matchgroup=texSection start='\\begin\s*{\s*document\s*}' end='\\end\s*{\s*document\s*}'											fold contains=@texFoldGroup,@texDocGroup
340    syn region texPartZone		matchgroup=texSection start='\\part\>'			 end='\ze\s*\\\%(part\>\|end\s*{\s*document\s*}\)'								fold contains=@texFoldGroup,@texPartGroup
341    syn region texChapterZone		matchgroup=texSection start='\\chapter\>'		 end='\ze\s*\\\%(chapter\>\|part\>\|end\s*{\s*document\s*}\)'							fold contains=@texFoldGroup,@texChapterGroup
342    syn region texSectionZone		matchgroup=texSection start='\\section\>'		 end='\ze\s*\\\%(section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'					fold contains=@texFoldGroup,@texSectionGroup
343    syn region texSubSectionZone		matchgroup=texSection start='\\subsection\>'		 end='\ze\s*\\\%(\%(sub\)\=section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'				fold contains=@texFoldGroup,@texSubSectionGroup
344    syn region texSubSubSectionZone	matchgroup=texSection start='\\subsubsection\>'		 end='\ze\s*\\\%(\%(sub\)\{,2}section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'				fold contains=@texFoldGroup,@texSubSubSectionGroup
345    syn region texParaZone		matchgroup=texSection start='\\paragraph\>'		 end='\ze\s*\\\%(paragraph\>\|\%(sub\)*section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'			fold contains=@texFoldGroup,@texParaGroup
346    syn region texSubParaZone		matchgroup=texSection start='\\subparagraph\>'		 end='\ze\s*\\\%(\%(sub\)\=paragraph\>\|\%(sub\)*section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'	fold contains=@texFoldGroup
347    syn region texTitle			matchgroup=texSection start='\\\%(author\|title\)\>\s*{' end='}'													fold contains=@texFoldGroup
348    syn region texAbstract		matchgroup=texSection start='\\begin\s*{\s*abstract\s*}' end='\\end\s*{\s*abstract\s*}'											fold contains=@texFoldGroup
349   else
350    syn region texDocZone			matchgroup=texSection start='\\begin\s*{\s*document\s*}' end='\\end\s*{\s*document\s*}'											contains=@texFoldGroup,@texDocGroup
351    syn region texPartZone		matchgroup=texSection start='\\part\>'			 end='\ze\s*\\\%(part\>\|end\s*{\s*document\s*}\)'								contains=@texFoldGroup,@texPartGroup
352    syn region texChapterZone		matchgroup=texSection start='\\chapter\>'		 end='\ze\s*\\\%(chapter\>\|part\>\|end\s*{\s*document\s*}\)'							contains=@texFoldGroup,@texChapterGroup
353    syn region texSectionZone		matchgroup=texSection start='\\section\>'		 end='\ze\s*\\\%(section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'					contains=@texFoldGroup,@texSectionGroup
354    syn region texSubSectionZone		matchgroup=texSection start='\\subsection\>'		 end='\ze\s*\\\%(\%(sub\)\=section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'				contains=@texFoldGroup,@texSubSectionGroup
355    syn region texSubSubSectionZone	matchgroup=texSection start='\\subsubsection\>'		 end='\ze\s*\\\%(\%(sub\)\{,2}section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'				contains=@texFoldGroup,@texSubSubSectionGroup
356    syn region texParaZone		matchgroup=texSection start='\\paragraph\>'		 end='\ze\s*\\\%(paragraph\>\|\%(sub\)*section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'			contains=@texFoldGroup,@texParaGroup
357    syn region texSubParaZone		matchgroup=texSection start='\\subparagraph\>'		 end='\ze\s*\\\%(\%(sub\)\=paragraph\>\|\%(sub\)*section\>\|chapter\>\|part\>\|end\s*{\s*document\s*}\)'	contains=@texFoldGroup
358    syn region texTitle			matchgroup=texSection start='\\\%(author\|title\)\>\s*{' end='}'													contains=@texFoldGroup
359    syn region texAbstract		matchgroup=texSection start='\\begin\s*{\s*abstract\s*}' end='\\end\s*{\s*abstract\s*}'											contains=@texFoldGroup
360   endif
361  endif
362endif
363
364" particular support for bold and italic {{{1
365if !exists("g:tex_fast") || g:tex_fast =~ 'b'
366  if s:tex_conceal =~ 'b'
367   syn region texBoldStyle	matchgroup=texTypeStyle start="\\textbf\s*{" end="}" concealends contains=@texBoldGroup
368   syn region texBoldItalStyle	matchgroup=texTypeStyle start="\\textit\s*{" end="}" concealends contains=@texItalGroup
369   syn region texItalStyle	matchgroup=texTypeStyle start="\\textit\s*{" end="}" concealends contains=@texItalGroup
370   syn region texItalBoldStyle	matchgroup=texTypeStyle start="\\textbf\s*{" end="}" concealends contains=@texBoldGroup
371  endif
372endif
373
374" Bad Math (mismatched): {{{1
375if !exists("tex_no_math")
376 syn match texBadMath		"\\end\s*{\s*\(array\|gathered\|bBpvV]matrix\|split\|subequations\|smallmatrix\|xxalignat\)\s*}"
377 syn match texBadMath		"\\end\s*{\s*\(align\|alignat\|displaymath\|displaymath\|eqnarray\|equation\|flalign\|gather\|math\|multline\|xalignat\)\*\=\s*}"
378 syn match texBadMath		"\\[\])]"
379endif
380
381" Math Zones: {{{1
382if !exists("tex_no_math")
383 " TexNewMathZone: function creates a mathzone with the given suffix and mathzone name. {{{2
384 "                 Starred forms are created if starform is true.  Starred
385 "                 forms have syntax group and synchronization groups with a
386 "                 "S" appended.  Handles: cluster, syntax, sync, and HiLink.
387 fun! TexNewMathZone(sfx,mathzone,starform)
388   let grpname  = "texMathZone".a:sfx
389   let syncname = "texSyncMathZone".a:sfx
390   if g:tex_fold_enabled
391    let foldcmd= " fold"
392   else
393    let foldcmd= ""
394   endif
395   exe "syn cluster texMathZones add=".grpname
396   if !exists("g:tex_fast") || g:tex_fast =~ 'M'
397    exe 'syn region '.grpname.' start='."'".'\\begin\s*{\s*'.a:mathzone.'\s*}'."'".' end='."'".'\\end\s*{\s*'.a:mathzone.'\s*}'."'".' keepend contains=@texMathZoneGroup'.foldcmd
398    exe 'syn sync match '.syncname.' grouphere '.grpname.' "\\begin\s*{\s*'.a:mathzone.'\*\s*}"'
399    exe 'syn sync match '.syncname.' grouphere '.grpname.' "\\begin\s*{\s*'.a:mathzone.'\*\s*}"'
400   endif
401   exe 'hi def link '.grpname.' texMath'
402   if a:starform
403    let grpname  = "texMathZone".a:sfx.'S'
404    let syncname = "texSyncMathZone".a:sfx.'S'
405    exe "syn cluster texMathZones add=".grpname
406    if !exists("g:tex_fast") || g:tex_fast =~ 'M'
407     exe 'syn region '.grpname.' start='."'".'\\begin\s*{\s*'.a:mathzone.'\*\s*}'."'".' end='."'".'\\end\s*{\s*'.a:mathzone.'\*\s*}'."'".' keepend contains=@texMathZoneGroup'.foldcmd
408     exe 'syn sync match '.syncname.' grouphere '.grpname.' "\\begin\s*{\s*'.a:mathzone.'\*\s*}"'
409     exe 'syn sync match '.syncname.' grouphere '.grpname.' "\\begin\s*{\s*'.a:mathzone.'\*\s*}"'
410    endif
411    exe 'hi def link '.grpname.' texMath'
412   endif
413 endfun
414
415 " Standard Math Zones: {{{2
416 call TexNewMathZone("A","align",1)
417 call TexNewMathZone("B","alignat",1)
418 call TexNewMathZone("C","displaymath",1)
419 call TexNewMathZone("D","eqnarray",1)
420 call TexNewMathZone("E","equation",1)
421 call TexNewMathZone("F","flalign",1)
422 call TexNewMathZone("G","gather",1)
423 call TexNewMathZone("H","math",1)
424 call TexNewMathZone("I","multline",1)
425 call TexNewMathZone("J","subequations",0)
426 call TexNewMathZone("K","xalignat",1)
427 call TexNewMathZone("L","xxalignat",0)
428
429 " Inline Math Zones: {{{2
430 if !exists("g:tex_fast") || g:tex_fast =~ 'M'
431  if has("conceal") && &enc == 'utf-8' && s:tex_conceal =~ 'd'
432   syn region texMathZoneV	matchgroup=Delimiter start="\\("			matchgroup=Delimiter end="\\)\|%stopzone\>"	keepend concealends contains=@texMathZoneGroup
433   syn region texMathZoneW	matchgroup=Delimiter start="\\\["			matchgroup=Delimiter end="\\]\|%stopzone\>"	keepend concealends contains=@texMathZoneGroup
434   syn region texMathZoneX	matchgroup=Delimiter start="\$" skip="\\\\\|\\\$"	matchgroup=Delimiter end="\$" end="%stopzone\>"		concealends contains=@texMathZoneGroup
435   syn region texMathZoneY	matchgroup=Delimiter start="\$\$" 			matchgroup=Delimiter end="\$\$" end="%stopzone\>"	concealends keepend		contains=@texMathZoneGroup
436  else
437   syn region texMathZoneV	matchgroup=Delimiter start="\\("			matchgroup=Delimiter end="\\)\|%stopzone\>"	keepend contains=@texMathZoneGroup
438   syn region texMathZoneW	matchgroup=Delimiter start="\\\["			matchgroup=Delimiter end="\\]\|%stopzone\>"	keepend contains=@texMathZoneGroup
439   syn region texMathZoneX	matchgroup=Delimiter start="\$" skip="\\\\\|\\\$"	matchgroup=Delimiter end="\$" end="%stopzone\>"	contains=@texMathZoneGroup
440   syn region texMathZoneY	matchgroup=Delimiter start="\$\$" 			matchgroup=Delimiter end="\$\$" end="%stopzone\>"	keepend		contains=@texMathZoneGroup
441  endif
442  syn region texMathZoneZ	matchgroup=texStatement start="\\ensuremath\s*{"	matchgroup=texStatement end="}" end="%stopzone\>"	contains=@texMathZoneGroup
443 endif
444
445 syn match texMathOper		"[_^=]" contained
446
447 " Text Inside Math Zones: {{{2
448 if !exists("g:tex_fast") || g:tex_fast =~ 'M'
449  if !exists("g:tex_nospell") || !g:tex_nospell
450   syn region texMathText matchgroup=texStatement start='\\\(\(inter\)\=text\|mbox\)\s*{'	end='}'	contains=@texFoldGroup,@Spell
451  else
452   syn region texMathText matchgroup=texStatement start='\\\(\(inter\)\=text\|mbox\)\s*{'	end='}'	contains=@texFoldGroup
453  endif
454 endif
455
456 " \left..something.. and \right..something.. support: {{{2
457 syn match   texMathDelimBad	contained		"\S"
458 if has("conceal") && &enc == 'utf-8' && s:tex_conceal =~ 'm'
459  syn match   texMathDelim	contained		"\\left\\{\>"	skipwhite nextgroup=texMathDelimSet1,texMathDelimSet2,texMathDelimBad contains=texMathSymbol cchar={
460  syn match   texMathDelim	contained		"\\right\\}\>"	skipwhite nextgroup=texMathDelimSet1,texMathDelimSet2,texMathDelimBad contains=texMathSymbol cchar=}
461  let s:texMathDelimList=[
462     \ ['<'            , '<'] ,
463     \ ['>'            , '>'] ,
464     \ ['('            , '('] ,
465     \ [')'            , ')'] ,
466     \ ['\['           , '['] ,
467     \ [']'            , ']'] ,
468     \ ['\\{'          , '{'] ,
469     \ ['\\}'          , '}'] ,
470     \ ['|'            , '|'] ,
471     \ ['\\|'          , '‖'] ,
472     \ ['\\backslash'  , '\'] ,
473     \ ['\\downarrow'  , '↓'] ,
474     \ ['\\Downarrow'  , '⇓'] ,
475     \ ['\\langle'     , '<'] ,
476     \ ['\\lbrace'     , '['] ,
477     \ ['\\lceil'      , '⌈'] ,
478     \ ['\\lfloor'     , '⌊'] ,
479     \ ['\\lgroup'     , '⌊'] ,
480     \ ['\\lmoustache' , '⎛'] ,
481     \ ['\\rangle'     , '>'] ,
482     \ ['\\rbrace'     , ']'] ,
483     \ ['\\rceil'      , '⌉'] ,
484     \ ['\\rfloor'     , '⌋'] ,
485     \ ['\\rgroup'     , '⌋'] ,
486     \ ['\\rmoustache' , '⎞'] ,
487     \ ['\\uparrow'    , '↑'] ,
488     \ ['\\Uparrow'    , '↑'] ,
489     \ ['\\updownarrow', '↕'] ,
490     \ ['\\Updownarrow', '⇕']]
491  syn match texMathDelim	'\\[bB]igg\=[lr]' contained nextgroup=texMathDelimBad
492  for texmath in s:texMathDelimList
493   exe "syn match texMathDelim	'\\\\[bB]igg\\=[lr]\\=".texmath[0]."'	contained conceal cchar=".texmath[1]
494  endfor
495
496 else
497  syn match   texMathDelim	contained		"\\\(left\|right\)\>"	skipwhite nextgroup=texMathDelimSet1,texMathDelimSet2,texMathDelimBad
498  syn match   texMathDelim	contained		"\\[bB]igg\=[lr]\=\>"	skipwhite nextgroup=texMathDelimSet1,texMathDelimSet2,texMathDelimBad
499  syn match   texMathDelimSet2	contained	"\\"		nextgroup=texMathDelimKey,texMathDelimBad
500  syn match   texMathDelimSet1	contained	"[<>()[\]|/.]\|\\[{}|]"
501  syn keyword texMathDelimKey	contained	backslash       lceil           lVert           rgroup          uparrow
502  syn keyword texMathDelimKey	contained	downarrow       lfloor          rangle          rmoustache      Uparrow
503  syn keyword texMathDelimKey	contained	Downarrow       lgroup          rbrace          rvert           updownarrow
504  syn keyword texMathDelimKey	contained	langle          lmoustache      rceil           rVert           Updownarrow
505  syn keyword texMathDelimKey	contained	lbrace          lvert           rfloor
506 endif
507 syn match   texMathDelim	contained		"\\\(left\|right\)arrow\>\|\<\([aA]rrow\|brace\)\=vert\>"
508 syn match   texMathDelim	contained		"\\lefteqn\>"
509endif
510
511" Special TeX characters  ( \$ \& \% \# \{ \} \_ \S \P ) : {{{1
512syn match texSpecialChar	"\\[$&%#{}_]"
513if b:tex_stylish
514  syn match texSpecialChar	"\\[SP@][^a-zA-Z@]"me=e-1
515else
516  syn match texSpecialChar	"\\[SP@]\A"me=e-1
517endif
518syn match texSpecialChar	"\\\\"
519if !exists("tex_no_math")
520 syn match texOnlyMath		"[_^]"
521endif
522syn match texSpecialChar	"\^\^[0-9a-f]\{2}\|\^\^\S"
523
524" Comments: {{{1
525"    Normal TeX LaTeX     :   %....
526"    Documented TeX Format:  ^^A...	-and-	leading %s (only)
527if !exists("g:tex_comment_nospell") || !g:tex_comment_nospell
528 syn cluster texCommentGroup	contains=texTodo,@Spell
529else
530 syn cluster texCommentGroup	contains=texTodo,@NoSpell
531endif
532syn case ignore
533syn keyword texTodo		contained		combak	fixme	todo	xxx
534syn case match
535if s:extfname == "dtx"
536  syn match texComment		"\^\^A.*$"	contains=@texCommentGroup
537  syn match texComment		"^%\+"		contains=@texCommentGroup
538else
539  if g:tex_fold_enabled
540   " allows syntax-folding of 2 or more contiguous comment lines
541   " single-line comments are not folded
542   syn match  texComment	"%.*$"			contains=@texCommentGroup
543   if !exists("g:tex_fast") || g:tex_fast =~ 'c'
544    syn region texComment	start="^\zs\s*%.*\_s*%"	skip="^\s*%"	end='^\ze\s*[^%]' fold
545    syn region texNoSpell	contained fold		matchgroup=texComment start="%\s*nospell\s*{"	end="%\s*nospell\s*}"	contains=@texFoldGroup,@NoSpell
546   endif
547  else
548   syn match texComment		"%.*$"			contains=@texCommentGroup
549   if !exists("g:tex_fast") || g:tex_fast =~ 'c'
550    syn region texNoSpell	contained		matchgroup=texComment start="%\s*nospell\s*{"	end="%\s*nospell\s*}"	contains=@texFoldGroup,@NoSpell
551   endif
552  endif
553endif
554
555" Separate lines used for verb` and verb# so that the end conditions {{{1
556" will appropriately terminate.
557" If g:tex_verbspell exists, then verbatim texZones will permit spellchecking there.
558if !exists("g:tex_fast") || g:tex_fast =~ 'v'
559  if exists("g:tex_verbspell") && g:tex_verbspell
560   syn region texZone		start="\\begin{[vV]erbatim}"		end="\\end{[vV]erbatim}\|%stopzone\>"	contains=@Spell
561   " listings package:
562   syn region texZone		start="\\begin{lstlisting}"		end="\\end{lstlisting}\|%stopzone\>"	contains=@Spell
563   if version < 600
564    syn region texZone		start="\\verb\*\=`"			end="`\|%stopzone\>"			contains=@Spell
565    syn region texZone		start="\\verb\*\=#"			end="#\|%stopzone\>"			contains=@Spell
566   else
567     if b:tex_stylish
568      syn region texZone		start="\\verb\*\=\z([^\ta-zA-Z@]\)"	end="\z1\|%stopzone\>"			contains=@Spell
569     else
570      syn region texZone		start="\\verb\*\=\z([^\ta-zA-Z]\)"	end="\z1\|%stopzone\>"			contains=@Spell
571     endif
572   endif
573  else
574   syn region texZone		start="\\begin{[vV]erbatim}"		end="\\end{[vV]erbatim}\|%stopzone\>"
575   if version < 600
576    syn region texZone		start="\\verb\*\=`"			end="`\|%stopzone\>"
577    syn region texZone		start="\\verb\*\=#"			end="#\|%stopzone\>"
578   else
579     if b:tex_stylish
580       syn region texZone		start="\\verb\*\=\z([^\ta-zA-Z@]\)"	end="\z1\|%stopzone\>"
581     else
582       syn region texZone		start="\\verb\*\=\z([^\ta-zA-Z]\)"	end="\z1\|%stopzone\>"
583     endif
584   endif
585  endif
586endif
587
588" Tex Reference Zones: {{{1
589if !exists("g:tex_fast") || g:tex_fast =~ 'r'
590  syn region texZone		matchgroup=texStatement start="@samp{"			end="}\|%stopzone\>"	contains=@texRefGroup
591  syn region texRefZone		matchgroup=texStatement start="\\nocite{"		end="}\|%stopzone\>"	contains=@texRefGroup
592  syn region texRefZone		matchgroup=texStatement start="\\bibliography{"		end="}\|%stopzone\>"	contains=@texRefGroup
593  syn region texRefZone		matchgroup=texStatement start="\\label{"		end="}\|%stopzone\>"	contains=@texRefGroup
594  syn region texRefZone		matchgroup=texStatement start="\\\(page\|eq\)ref{"	end="}\|%stopzone\>"	contains=@texRefGroup
595  syn region texRefZone		matchgroup=texStatement start="\\v\=ref{"		end="}\|%stopzone\>"	contains=@texRefGroup
596  syn region texRefOption	contained	matchgroup=Delimiter start='\[' end=']'		contains=@texRefGroup,texRefZone	nextgroup=texRefOption,texCite
597  syn region texCite	contained	matchgroup=Delimiter start='{' end='}'		contains=@texRefGroup,texRefZone,texCite
598endif
599syn match  texRefZone		'\\cite\%([tp]\*\=\)\=' nextgroup=texRefOption,texCite
600
601" Handle newcommand, newenvironment : {{{1
602syn match  texNewCmd				"\\newcommand\>"			nextgroup=texCmdName skipwhite skipnl
603if !exists("g:tex_fast") || g:tex_fast =~ 'V'
604  syn region texCmdName contained matchgroup=Delimiter start="{"rs=s+1  end="}"		nextgroup=texCmdArgs,texCmdBody skipwhite skipnl
605  syn region texCmdArgs contained matchgroup=Delimiter start="\["rs=s+1 end="]"		nextgroup=texCmdBody skipwhite skipnl
606  syn region texCmdBody contained matchgroup=Delimiter start="{"rs=s+1 skip="\\\\\|\\[{}]"	matchgroup=Delimiter end="}" contains=@texCmdGroup
607endif
608syn match  texNewEnv				"\\newenvironment\>"			nextgroup=texEnvName skipwhite skipnl
609if !exists("g:tex_fast") || g:tex_fast =~ 'V'
610  syn region texEnvName contained matchgroup=Delimiter start="{"rs=s+1  end="}"		nextgroup=texEnvBgn skipwhite skipnl
611  syn region texEnvBgn  contained matchgroup=Delimiter start="{"rs=s+1  end="}"		nextgroup=texEnvEnd skipwhite skipnl contains=@texEnvGroup
612  syn region texEnvEnd  contained matchgroup=Delimiter start="{"rs=s+1  end="}"		skipwhite skipnl contains=@texEnvGroup
613endif
614
615" Definitions/Commands: {{{1
616syn match texDefCmd				"\\def\>"				nextgroup=texDefName skipwhite skipnl
617if b:tex_stylish
618  syn match texDefName contained		"\\[a-zA-Z@]\+"				nextgroup=texDefParms,texCmdBody skipwhite skipnl
619  syn match texDefName contained		"\\[^a-zA-Z@]"				nextgroup=texDefParms,texCmdBody skipwhite skipnl
620else
621  syn match texDefName contained		"\\\a\+"				nextgroup=texDefParms,texCmdBody skipwhite skipnl
622  syn match texDefName contained		"\\\A"					nextgroup=texDefParms,texCmdBody skipwhite skipnl
623endif
624syn match texDefParms  contained		"#[^{]*"	contains=texDefParm	nextgroup=texCmdBody skipwhite skipnl
625syn match  texDefParm  contained		"#\d\+"
626
627" TeX Lengths: {{{1
628syn match  texLength		"\<\d\+\([.,]\d\+\)\=\s*\(true\)\=\s*\(bp\|cc\|cm\|dd\|em\|ex\|in\|mm\|pc\|pt\|sp\)\>"
629
630" TeX String Delimiters: {{{1
631syn match texString		"\(``\|''\|,,\)"
632
633" makeatletter -- makeatother sections
634if !exists("s:tex_no_error")
635 if !exists("g:tex_fast") || g:tex_fast =~ 'S'
636  syn region texStyle			matchgroup=texStatement start='\\makeatletter' end='\\makeatother'	contains=@texStyleGroup contained
637 endif
638 syn match  texStyleStatement		"\\[a-zA-Z@]\+"	contained
639 if !exists("g:tex_fast") || g:tex_fast =~ 'S'
640  syn region texStyleMatcher		matchgroup=Delimiter start="{" skip="\\\\\|\\[{}]"	end="}"		contains=@texStyleGroup,texError	contained
641  syn region texStyleMatcher		matchgroup=Delimiter start="\["				end="]"		contains=@texStyleGroup,texError	contained
642 endif
643endif
644
645" Conceal mode support (supports set cole=2) {{{1
646if has("conceal") && &enc == 'utf-8'
647
648 " Math Symbols {{{2
649 " (many of these symbols were contributed by Björn Winckler)
650 if s:tex_conceal =~ 'm'
651  let s:texMathList=[
652    \ ['|'		, '‖'],
653    \ ['aleph'		, 'ℵ'],
654    \ ['amalg'		, '∐'],
655    \ ['angle'		, '∠'],
656    \ ['approx'		, '≈'],
657    \ ['ast'		, '∗'],
658    \ ['asymp'		, '≍'],
659    \ ['backepsilon'	, '∍'],
660    \ ['backsimeq'	, '≃'],
661    \ ['backslash'	, '∖'],
662    \ ['barwedge'	, '⊼'],
663    \ ['because'	, '∵'],
664    \ ['between'	, '≬'],
665    \ ['bigcap'		, '∩'],
666    \ ['bigcirc'	, '○'],
667    \ ['bigcup'		, '∪'],
668    \ ['bigodot'	, '⊙'],
669    \ ['bigoplus'	, '⊕'],
670    \ ['bigotimes'	, '⊗'],
671    \ ['bigsqcup'	, '⊔'],
672    \ ['bigtriangledown', '∇'],
673    \ ['bigtriangleup'	, '∆'],
674    \ ['bigvee'		, '⋁'],
675    \ ['bigwedge'	, '⋀'],
676    \ ['blacksquare'	, '∎'],
677    \ ['bot'		, '⊥'],
678    \ ['bowtie'	        , '⋈'],
679    \ ['boxdot'		, '⊡'],
680    \ ['boxminus'	, '⊟'],
681    \ ['boxplus'	, '⊞'],
682    \ ['boxtimes'	, '⊠'],
683    \ ['bullet'	        , '•'],
684    \ ['bumpeq'		, '≏'],
685    \ ['Bumpeq'		, '≎'],
686    \ ['cap'		, '∩'],
687    \ ['Cap'		, '⋒'],
688    \ ['cdot'		, '·'],
689    \ ['cdots'		, '⋯'],
690    \ ['circ'		, '∘'],
691    \ ['circeq'		, '≗'],
692    \ ['circlearrowleft', '↺'],
693    \ ['circlearrowright', '↻'],
694    \ ['circledast'	, '⊛'],
695    \ ['circledcirc'	, '⊚'],
696    \ ['clubsuit'	, '♣'],
697    \ ['complement'	, '∁'],
698    \ ['cong'		, '≅'],
699    \ ['coprod'		, '∐'],
700    \ ['copyright'	, '©'],
701    \ ['cup'		, '∪'],
702    \ ['Cup'		, '⋓'],
703    \ ['curlyeqprec'	, '⋞'],
704    \ ['curlyeqsucc'	, '⋟'],
705    \ ['curlyvee'	, '⋎'],
706    \ ['curlywedge'	, '⋏'],
707    \ ['dagger'	        , '†'],
708    \ ['dashv'		, '⊣'],
709    \ ['ddagger'	, '‡'],
710    \ ['ddots'	        , '⋱'],
711    \ ['diamond'	, '⋄'],
712    \ ['diamondsuit'	, '♢'],
713    \ ['div'		, '÷'],
714    \ ['doteq'		, '≐'],
715    \ ['doteqdot'	, '≑'],
716    \ ['dotplus'	, '∔'],
717    \ ['dots'		, '…'],
718    \ ['dotsb'		, '⋯'],
719    \ ['dotsc'		, '…'],
720    \ ['dotsi'		, '⋯'],
721    \ ['dotso'		, '…'],
722    \ ['doublebarwedge'	, '⩞'],
723    \ ['downarrow'	, '↓'],
724    \ ['Downarrow'	, '⇓'],
725    \ ['ell'		, 'ℓ'],
726    \ ['emptyset'	, '∅'],
727    \ ['eqcirc'		, '≖'],
728    \ ['eqsim'		, '≂'],
729    \ ['eqslantgtr'	, '⪖'],
730    \ ['eqslantless'	, '⪕'],
731    \ ['equiv'		, '≡'],
732    \ ['exists'		, '∃'],
733    \ ['fallingdotseq'	, '≒'],
734    \ ['flat'		, '♭'],
735    \ ['forall'		, '∀'],
736    \ ['frown'		, '⁔'],
737    \ ['ge'		, '≥'],
738    \ ['geq'		, '≥'],
739    \ ['geqq'		, '≧'],
740    \ ['gets'		, '←'],
741    \ ['gg'		, '⟫'],
742    \ ['gneqq'		, '≩'],
743    \ ['gtrdot'		, '⋗'],
744    \ ['gtreqless'	, '⋛'],
745    \ ['gtrless'	, '≷'],
746    \ ['gtrsim'		, '≳'],
747    \ ['hbar'		, 'ℏ'],
748    \ ['heartsuit'	, '♡'],
749    \ ['hookleftarrow'	, '↩'],
750    \ ['hookrightarrow'	, '↪'],
751    \ ['iiint'		, '∭'],
752    \ ['iint'		, '∬'],
753    \ ['Im'		, 'ℑ'],
754    \ ['imath'		, 'ɩ'],
755    \ ['in'		, '∈'],
756    \ ['infty'		, '∞'],
757    \ ['int'		, '∫'],
758    \ ['lceil'		, '⌈'],
759    \ ['ldots'		, '…'],
760    \ ['le'		, '≤'],
761    \ ['leadsto'	, '↝'],
762    \ ['left('		, '('],
763    \ ['left\['		, '['],
764    \ ['left\\{'	, '{'],
765    \ ['leftarrow'	, '⟵'],
766    \ ['Leftarrow'	, '⟸'],
767    \ ['leftarrowtail'	, '↢'],
768    \ ['leftharpoondown', '↽'],
769    \ ['leftharpoonup'	, '↼'],
770    \ ['leftrightarrow'	, '↔'],
771    \ ['Leftrightarrow'	, '⇔'],
772    \ ['leftrightsquigarrow', '↭'],
773    \ ['leftthreetimes'	, '⋋'],
774    \ ['leq'		, '≤'],
775    \ ['leq'		, '≤'],
776    \ ['leqq'		, '≦'],
777    \ ['lessdot'	, '⋖'],
778    \ ['lesseqgtr'	, '⋚'],
779    \ ['lesssim'	, '≲'],
780    \ ['lfloor'		, '⌊'],
781    \ ['ll'		, '≪'],
782    \ ['lmoustache'     , '╭'],
783    \ ['lneqq'		, '≨'],
784    \ ['ltimes'		, '⋉'],
785    \ ['mapsto'		, '↦'],
786    \ ['measuredangle'	, '∡'],
787    \ ['mid'		, '∣'],
788    \ ['models'		, '╞'],
789    \ ['mp'		, '∓'],
790    \ ['nabla'		, '∇'],
791    \ ['natural'	, '♮'],
792    \ ['ncong'		, '≇'],
793    \ ['ne'		, '≠'],
794    \ ['nearrow'	, '↗'],
795    \ ['neg'		, '¬'],
796    \ ['neq'		, '≠'],
797    \ ['nexists'	, '∄'],
798    \ ['ngeq'		, '≱'],
799    \ ['ngeqq'		, '≱'],
800    \ ['ngtr'		, '≯'],
801    \ ['ni'		, '∋'],
802    \ ['nleftarrow'	, '↚'],
803    \ ['nLeftarrow'	, '⇍'],
804    \ ['nLeftrightarrow', '⇎'],
805    \ ['nleq'		, '≰'],
806    \ ['nleqq'		, '≰'],
807    \ ['nless'		, '≮'],
808    \ ['nmid'		, '∤'],
809    \ ['notin'		, '∉'],
810    \ ['nprec'		, '⊀'],
811    \ ['nrightarrow'	, '↛'],
812    \ ['nRightarrow'	, '⇏'],
813    \ ['nsim'		, '≁'],
814    \ ['nsucc'		, '⊁'],
815    \ ['ntriangleleft'	, '⋪'],
816    \ ['ntrianglelefteq', '⋬'],
817    \ ['ntriangleright'	, '⋫'],
818    \ ['ntrianglerighteq', '⋭'],
819    \ ['nvdash'		, '⊬'],
820    \ ['nvDash'		, '⊭'],
821    \ ['nVdash'		, '⊮'],
822    \ ['nwarrow'	, '↖'],
823    \ ['odot'		, '⊙'],
824    \ ['oint'		, '∮'],
825    \ ['ominus'		, '⊖'],
826    \ ['oplus'		, '⊕'],
827    \ ['oslash'		, '⊘'],
828    \ ['otimes'		, '⊗'],
829    \ ['owns'		, '∋'],
830    \ ['P'	        , '¶'],
831    \ ['parallel'	, '║'],
832    \ ['partial'	, '∂'],
833    \ ['perp'		, '⊥'],
834    \ ['pitchfork'	, '⋔'],
835    \ ['pm'		, '±'],
836    \ ['prec'		, '≺'],
837    \ ['precapprox'	, '⪷'],
838    \ ['preccurlyeq'	, '≼'],
839    \ ['preceq'		, '⪯'],
840    \ ['precnapprox'	, '⪹'],
841    \ ['precneqq'	, '⪵'],
842    \ ['precsim'	, '≾'],
843    \ ['prime'		, '′'],
844    \ ['prod'		, '∏'],
845    \ ['propto'		, '∝'],
846    \ ['rceil'		, '⌉'],
847    \ ['Re'		, 'ℜ'],
848    \ ['rfloor'		, '⌋'],
849    \ ['right)'		, ')'],
850    \ ['right]'		, ']'],
851    \ ['right\\}'	, '}'],
852    \ ['rightarrow'	, '⟶'],
853    \ ['Rightarrow'	, '⟹'],
854    \ ['rightarrowtail'	, '↣'],
855    \ ['rightleftharpoons', '⇌'],
856    \ ['rightsquigarrow', '↝'],
857    \ ['rightthreetimes', '⋌'],
858    \ ['risingdotseq'	, '≓'],
859    \ ['rmoustache'     , '╮'],
860    \ ['rtimes'		, '⋊'],
861    \ ['S'	        , '§'],
862    \ ['searrow'	, '↘'],
863    \ ['setminus'	, '∖'],
864    \ ['sharp'		, '♯'],
865    \ ['sim'		, '∼'],
866    \ ['simeq'		, '⋍'],
867    \ ['smile'		, '‿'],
868    \ ['spadesuit'	, '♠'],
869    \ ['sphericalangle'	, '∢'],
870    \ ['sqcap'		, '⊓'],
871    \ ['sqcup'		, '⊔'],
872    \ ['sqsubset'	, '⊏'],
873    \ ['sqsubseteq'	, '⊑'],
874    \ ['sqsupset'	, '⊐'],
875    \ ['sqsupseteq'	, '⊒'],
876    \ ['star'		, '✫'],
877    \ ['subset'		, '⊂'],
878    \ ['Subset'		, '⋐'],
879    \ ['subseteq'	, '⊆'],
880    \ ['subseteqq'	, '⫅'],
881    \ ['subsetneq'	, '⊊'],
882    \ ['subsetneqq'	, '⫋'],
883    \ ['succ'		, '≻'],
884    \ ['succapprox'	, '⪸'],
885    \ ['succcurlyeq'	, '≽'],
886    \ ['succeq'		, '⪰'],
887    \ ['succnapprox'	, '⪺'],
888    \ ['succneqq'	, '⪶'],
889    \ ['succsim'	, '≿'],
890    \ ['sum'		, '∑'],
891    \ ['supset'		, '⊃'],
892    \ ['Supset'		, '⋑'],
893    \ ['supseteq'	, '⊇'],
894    \ ['supseteqq'	, '⫆'],
895    \ ['supsetneq'	, '⊋'],
896    \ ['supsetneqq'	, '⫌'],
897    \ ['surd'		, '√'],
898    \ ['swarrow'	, '↙'],
899    \ ['therefore'	, '∴'],
900    \ ['times'		, '×'],
901    \ ['to'		, '→'],
902    \ ['top'		, '⊤'],
903    \ ['triangle'	, '∆'],
904    \ ['triangleleft'	, '⊲'],
905    \ ['trianglelefteq'	, '⊴'],
906    \ ['triangleq'	, '≜'],
907    \ ['triangleright'	, '⊳'],
908    \ ['trianglerighteq', '⊵'],
909    \ ['twoheadleftarrow', '↞'],
910    \ ['twoheadrightarrow', '↠'],
911    \ ['uparrow'	, '↑'],
912    \ ['Uparrow'	, '⇑'],
913    \ ['updownarrow'	, '↕'],
914    \ ['Updownarrow'	, '⇕'],
915    \ ['varnothing'	, '∅'],
916    \ ['vartriangle'	, '∆'],
917    \ ['vdash'		, '⊢'],
918    \ ['vDash'		, '⊨'],
919    \ ['Vdash'		, '⊩'],
920    \ ['vdots'		, '⋮'],
921    \ ['vee'		, '∨'],
922    \ ['veebar'		, '⊻'],
923    \ ['Vvdash'		, '⊪'],
924    \ ['wedge'		, '∧'],
925    \ ['wp'		, '℘'],
926    \ ['wr'		, '≀']]
927"    \ ['jmath'		, 'X']
928"    \ ['uminus'	, 'X']
929"    \ ['uplus'		, 'X']
930  for texmath in s:texMathList
931   if texmath[0] =~ '\w$'
932    exe "syn match texMathSymbol '\\\\".texmath[0]."\\>' contained conceal cchar=".texmath[1]
933   else
934    exe "syn match texMathSymbol '\\\\".texmath[0]."' contained conceal cchar=".texmath[1]
935   endif
936  endfor
937
938  if &ambw == "double"
939   syn match texMathSymbol '\\gg\>'			contained conceal cchar=≫
940   syn match texMathSymbol '\\ll\>'			contained conceal cchar=≪
941  else
942   syn match texMathSymbol '\\gg\>'			contained conceal cchar=⟫
943   syn match texMathSymbol '\\ll\>'			contained conceal cchar=⟪
944  endif
945
946  syn match texMathSymbol '\\hat{a}' contained conceal cchar=â
947  syn match texMathSymbol '\\hat{A}' contained conceal cchar=Â
948  syn match texMathSymbol '\\hat{c}' contained conceal cchar=ĉ
949  syn match texMathSymbol '\\hat{C}' contained conceal cchar=Ĉ
950  syn match texMathSymbol '\\hat{e}' contained conceal cchar=ê
951  syn match texMathSymbol '\\hat{E}' contained conceal cchar=Ê
952  syn match texMathSymbol '\\hat{g}' contained conceal cchar=ĝ
953  syn match texMathSymbol '\\hat{G}' contained conceal cchar=Ĝ
954  syn match texMathSymbol '\\hat{i}' contained conceal cchar=î
955  syn match texMathSymbol '\\hat{I}' contained conceal cchar=Î
956  syn match texMathSymbol '\\hat{o}' contained conceal cchar=ô
957  syn match texMathSymbol '\\hat{O}' contained conceal cchar=Ô
958  syn match texMathSymbol '\\hat{s}' contained conceal cchar=ŝ
959  syn match texMathSymbol '\\hat{S}' contained conceal cchar=Ŝ
960  syn match texMathSymbol '\\hat{u}' contained conceal cchar=û
961  syn match texMathSymbol '\\hat{U}' contained conceal cchar=Û
962  syn match texMathSymbol '\\hat{w}' contained conceal cchar=ŵ
963  syn match texMathSymbol '\\hat{W}' contained conceal cchar=Ŵ
964  syn match texMathSymbol '\\hat{y}' contained conceal cchar=ŷ
965  syn match texMathSymbol '\\hat{Y}' contained conceal cchar=Ŷ
966 endif
967
968 " Greek {{{2
969 if s:tex_conceal =~ 'g'
970  fun! s:Greek(group,pat,cchar)
971    exe 'syn match '.a:group." '".a:pat."' contained conceal cchar=".a:cchar
972  endfun
973  call s:Greek('texGreek','\\alpha\>'		,'α')
974  call s:Greek('texGreek','\\beta\>'		,'β')
975  call s:Greek('texGreek','\\gamma\>'		,'γ')
976  call s:Greek('texGreek','\\delta\>'		,'δ')
977  call s:Greek('texGreek','\\epsilon\>'		,'ϵ')
978  call s:Greek('texGreek','\\varepsilon\>'	,'ε')
979  call s:Greek('texGreek','\\zeta\>'		,'ζ')
980  call s:Greek('texGreek','\\eta\>'		,'η')
981  call s:Greek('texGreek','\\theta\>'		,'θ')
982  call s:Greek('texGreek','\\vartheta\>'		,'ϑ')
983  call s:Greek('texGreek','\\kappa\>'		,'κ')
984  call s:Greek('texGreek','\\lambda\>'		,'λ')
985  call s:Greek('texGreek','\\mu\>'		,'μ')
986  call s:Greek('texGreek','\\nu\>'		,'ν')
987  call s:Greek('texGreek','\\xi\>'		,'ξ')
988  call s:Greek('texGreek','\\pi\>'		,'π')
989  call s:Greek('texGreek','\\varpi\>'		,'ϖ')
990  call s:Greek('texGreek','\\rho\>'		,'ρ')
991  call s:Greek('texGreek','\\varrho\>'		,'ϱ')
992  call s:Greek('texGreek','\\sigma\>'		,'σ')
993  call s:Greek('texGreek','\\varsigma\>'		,'ς')
994  call s:Greek('texGreek','\\tau\>'		,'τ')
995  call s:Greek('texGreek','\\upsilon\>'		,'υ')
996  call s:Greek('texGreek','\\phi\>'		,'φ')
997  call s:Greek('texGreek','\\varphi\>'		,'ϕ')
998  call s:Greek('texGreek','\\chi\>'		,'χ')
999  call s:Greek('texGreek','\\psi\>'		,'ψ')
1000  call s:Greek('texGreek','\\omega\>'		,'ω')
1001  call s:Greek('texGreek','\\Gamma\>'		,'Γ')
1002  call s:Greek('texGreek','\\Delta\>'		,'Δ')
1003  call s:Greek('texGreek','\\Theta\>'		,'Θ')
1004  call s:Greek('texGreek','\\Lambda\>'		,'Λ')
1005  call s:Greek('texGreek','\\Xi\>'		,'Χ')
1006  call s:Greek('texGreek','\\Pi\>'		,'Π')
1007  call s:Greek('texGreek','\\Sigma\>'		,'Σ')
1008  call s:Greek('texGreek','\\Upsilon\>'		,'Υ')
1009  call s:Greek('texGreek','\\Phi\>'		,'Φ')
1010  call s:Greek('texGreek','\\Psi\>'		,'Ψ')
1011  call s:Greek('texGreek','\\Omega\>'		,'Ω')
1012  delfun s:Greek
1013 endif
1014
1015 " Superscripts/Subscripts {{{2
1016 if s:tex_conceal =~ 's'
1017  if !exists("g:tex_fast") || g:tex_fast =~ 's'
1018   syn region texSuperscript	matchgroup=Delimiter start='\^{'	skip="\\\\\|\\[{}]" end='}'	contained concealends contains=texSpecialChar,texSuperscripts,texStatement,texSubscript,texSuperscript,texMathMatcher
1019   syn region texSubscript	matchgroup=Delimiter start='_{'		skip="\\\\\|\\[{}]" end='}'	contained concealends contains=texSpecialChar,texSubscripts,texStatement,texSubscript,texSuperscript,texMathMatcher
1020  endif
1021  fun! s:SuperSub(group,leader,pat,cchar)
1022    exe 'syn match '.a:group." '".a:leader.a:pat."' contained conceal cchar=".a:cchar
1023    exe 'syn match '.a:group."s '".a:pat."' contained conceal cchar=".a:cchar.' nextgroup='.a:group.'s'
1024  endfun
1025  call s:SuperSub('texSuperscript','\^','0','⁰')
1026  call s:SuperSub('texSuperscript','\^','1','¹')
1027  call s:SuperSub('texSuperscript','\^','2','²')
1028  call s:SuperSub('texSuperscript','\^','3','³')
1029  call s:SuperSub('texSuperscript','\^','4','⁴')
1030  call s:SuperSub('texSuperscript','\^','5','⁵')
1031  call s:SuperSub('texSuperscript','\^','6','⁶')
1032  call s:SuperSub('texSuperscript','\^','7','⁷')
1033  call s:SuperSub('texSuperscript','\^','8','⁸')
1034  call s:SuperSub('texSuperscript','\^','9','⁹')
1035  call s:SuperSub('texSuperscript','\^','a','ᵃ')
1036  call s:SuperSub('texSuperscript','\^','b','ᵇ')
1037  call s:SuperSub('texSuperscript','\^','c','ᶜ')
1038  call s:SuperSub('texSuperscript','\^','d','ᵈ')
1039  call s:SuperSub('texSuperscript','\^','e','ᵉ')
1040  call s:SuperSub('texSuperscript','\^','f','ᶠ')
1041  call s:SuperSub('texSuperscript','\^','g','ᵍ')
1042  call s:SuperSub('texSuperscript','\^','h','ʰ')
1043  call s:SuperSub('texSuperscript','\^','i','ⁱ')
1044  call s:SuperSub('texSuperscript','\^','j','ʲ')
1045  call s:SuperSub('texSuperscript','\^','k','ᵏ')
1046  call s:SuperSub('texSuperscript','\^','l','ˡ')
1047  call s:SuperSub('texSuperscript','\^','m','ᵐ')
1048  call s:SuperSub('texSuperscript','\^','n','ⁿ')
1049  call s:SuperSub('texSuperscript','\^','o','ᵒ')
1050  call s:SuperSub('texSuperscript','\^','p','ᵖ')
1051  call s:SuperSub('texSuperscript','\^','r','ʳ')
1052  call s:SuperSub('texSuperscript','\^','s','ˢ')
1053  call s:SuperSub('texSuperscript','\^','t','ᵗ')
1054  call s:SuperSub('texSuperscript','\^','u','ᵘ')
1055  call s:SuperSub('texSuperscript','\^','v','ᵛ')
1056  call s:SuperSub('texSuperscript','\^','w','ʷ')
1057  call s:SuperSub('texSuperscript','\^','x','ˣ')
1058  call s:SuperSub('texSuperscript','\^','y','ʸ')
1059  call s:SuperSub('texSuperscript','\^','z','ᶻ')
1060  call s:SuperSub('texSuperscript','\^','A','ᴬ')
1061  call s:SuperSub('texSuperscript','\^','B','ᴮ')
1062  call s:SuperSub('texSuperscript','\^','D','ᴰ')
1063  call s:SuperSub('texSuperscript','\^','E','ᴱ')
1064  call s:SuperSub('texSuperscript','\^','G','ᴳ')
1065  call s:SuperSub('texSuperscript','\^','H','ᴴ')
1066  call s:SuperSub('texSuperscript','\^','I','ᴵ')
1067  call s:SuperSub('texSuperscript','\^','J','ᴶ')
1068  call s:SuperSub('texSuperscript','\^','K','ᴷ')
1069  call s:SuperSub('texSuperscript','\^','L','ᴸ')
1070  call s:SuperSub('texSuperscript','\^','M','ᴹ')
1071  call s:SuperSub('texSuperscript','\^','N','ᴺ')
1072  call s:SuperSub('texSuperscript','\^','O','ᴼ')
1073  call s:SuperSub('texSuperscript','\^','P','ᴾ')
1074  call s:SuperSub('texSuperscript','\^','R','ᴿ')
1075  call s:SuperSub('texSuperscript','\^','T','ᵀ')
1076  call s:SuperSub('texSuperscript','\^','U','ᵁ')
1077  call s:SuperSub('texSuperscript','\^','W','ᵂ')
1078  call s:SuperSub('texSuperscript','\^',',','︐')
1079  call s:SuperSub('texSuperscript','\^',':','︓')
1080  call s:SuperSub('texSuperscript','\^',';','︔')
1081  call s:SuperSub('texSuperscript','\^','+','⁺')
1082  call s:SuperSub('texSuperscript','\^','-','⁻')
1083  call s:SuperSub('texSuperscript','\^','<','˂')
1084  call s:SuperSub('texSuperscript','\^','>','˃')
1085  call s:SuperSub('texSuperscript','\^','/','ˊ')
1086  call s:SuperSub('texSuperscript','\^','(','⁽')
1087  call s:SuperSub('texSuperscript','\^',')','⁾')
1088  call s:SuperSub('texSuperscript','\^','\.','˙')
1089  call s:SuperSub('texSuperscript','\^','=','˭')
1090  call s:SuperSub('texSubscript','_','0','₀')
1091  call s:SuperSub('texSubscript','_','1','₁')
1092  call s:SuperSub('texSubscript','_','2','₂')
1093  call s:SuperSub('texSubscript','_','3','₃')
1094  call s:SuperSub('texSubscript','_','4','₄')
1095  call s:SuperSub('texSubscript','_','5','₅')
1096  call s:SuperSub('texSubscript','_','6','₆')
1097  call s:SuperSub('texSubscript','_','7','₇')
1098  call s:SuperSub('texSubscript','_','8','₈')
1099  call s:SuperSub('texSubscript','_','9','₉')
1100  call s:SuperSub('texSubscript','_','a','ₐ')
1101  call s:SuperSub('texSubscript','_','e','ₑ')
1102  call s:SuperSub('texSubscript','_','i','ᵢ')
1103  call s:SuperSub('texSubscript','_','o','ₒ')
1104  call s:SuperSub('texSubscript','_','u','ᵤ')
1105  call s:SuperSub('texSubscript','_',',','︐')
1106  call s:SuperSub('texSubscript','_','+','₊')
1107  call s:SuperSub('texSubscript','_','-','₋')
1108  call s:SuperSub('texSubscript','_','/','ˏ')
1109  call s:SuperSub('texSubscript','_','(','₍')
1110  call s:SuperSub('texSubscript','_',')','₎')
1111  call s:SuperSub('texSubscript','_','\.','‸')
1112  call s:SuperSub('texSubscript','_','r','ᵣ')
1113  call s:SuperSub('texSubscript','_','v','ᵥ')
1114  call s:SuperSub('texSubscript','_','x','ₓ')
1115  call s:SuperSub('texSubscript','_','\\beta\>' ,'ᵦ')
1116  call s:SuperSub('texSubscript','_','\\delta\>','ᵨ')
1117  call s:SuperSub('texSubscript','_','\\phi\>'  ,'ᵩ')
1118  call s:SuperSub('texSubscript','_','\\gamma\>','ᵧ')
1119  call s:SuperSub('texSubscript','_','\\chi\>'  ,'ᵪ')
1120  delfun s:SuperSub
1121 endif
1122
1123 " Accented characters: {{{2
1124 if s:tex_conceal =~ 'a'
1125  if b:tex_stylish
1126   syn match texAccent		"\\[bcdvuH][^a-zA-Z@]"me=e-1
1127   syn match texLigature		"\\\([ijolL]\|ae\|oe\|ss\|AA\|AE\|OE\)[^a-zA-Z@]"me=e-1
1128  else
1129   fun! s:Accents(chr,...)
1130     let i= 1
1131     for accent in ["`","\\'","^",'"','\~','\.',"c","H","k","r","u","v"]
1132      if i > a:0
1133       break
1134      endif
1135      if strlen(a:{i}) == 0 || a:{i} == ' ' || a:{i} == '?'
1136       let i= i + 1
1137       continue
1138      endif
1139      if accent =~ '\a'
1140       exe "syn match texAccent '".'\\'.accent.'\(\s*{'.a:chr.'}\|\s\+'.a:chr.'\)'."' conceal cchar=".a:{i}
1141      else
1142       exe "syn match texAccent '".'\\'.accent.'\s*\({'.a:chr.'}\|'.a:chr.'\)'."' conceal cchar=".a:{i}
1143      endif
1144      let i= i + 1
1145     endfor
1146   endfun
1147   "                  \`  \'  \^  \"  \~  \.  \c  \H  \k  \r  \u  \v
1148   call s:Accents('a','à','á','â','ä','ã','ȧ',' ',' ','ą','å','ă','ă')
1149   call s:Accents('A','À','Á','Â','Ä','Ã','Ȧ',' ',' ','Ą','Å','Ă','Ă')
1150   call s:Accents('c',' ','ć','ĉ',' ',' ','ċ','ç',' ',' ',' ',' ','č')
1151   call s:Accents('C',' ','Ć','Ĉ',' ',' ','Ċ','Ç',' ',' ',' ',' ','Č')
1152   call s:Accents('d',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','ď')
1153   call s:Accents('D',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','Ď')
1154   call s:Accents('e','è','é','ê','ë','ẽ','ė','ȩ',' ','ę',' ','ĕ','ě')
1155   call s:Accents('E','È','É','Ê','Ë','Ẽ','Ė','Ȩ',' ','Ę',' ','Ĕ','Ě')
1156   call s:Accents('g',' ','ǵ','ĝ',' ',' ','ġ','ģ',' ',' ',' ','ğ',' ')
1157   call s:Accents('G',' ','Ǵ','Ĝ',' ',' ','Ġ','Ģ',' ',' ',' ','Ğ',' ')
1158   call s:Accents('h',' ',' ','ĥ',' ',' ',' ',' ',' ',' ',' ',' ','ȟ')
1159   call s:Accents('H',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','Ȟ')
1160   call s:Accents('i','ì','í','î','ï','ĩ','į',' ',' ',' ',' ','ĭ',' ')
1161   call s:Accents('I','Ì','Í','Î','Ï','Ĩ','İ',' ',' ',' ',' ','Ĭ',' ')
1162   call s:Accents('J',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','ǰ')
1163   call s:Accents('k',' ',' ',' ',' ',' ',' ','ķ',' ',' ',' ',' ',' ')
1164   call s:Accents('K',' ',' ',' ',' ',' ',' ','Ķ',' ',' ',' ',' ',' ')
1165   call s:Accents('l',' ','ĺ','ľ',' ',' ',' ','ļ',' ',' ',' ',' ','ľ')
1166   call s:Accents('L',' ','Ĺ','Ľ',' ',' ',' ','Ļ',' ',' ',' ',' ','Ľ')
1167   call s:Accents('n',' ','ń',' ',' ','ñ',' ','ņ',' ',' ',' ',' ','ň')
1168   call s:Accents('N',' ','Ń',' ',' ','Ñ',' ','Ņ',' ',' ',' ',' ','Ň')
1169   call s:Accents('o','ò','ó','ô','ö','õ','ȯ',' ','ő','ǫ',' ','ŏ',' ')
1170   call s:Accents('O','Ò','Ó','Ô','Ö','Õ','Ȯ',' ','Ő','Ǫ',' ','Ŏ',' ')
1171   call s:Accents('r',' ','ŕ',' ',' ',' ',' ','ŗ',' ',' ',' ',' ','ř')
1172   call s:Accents('R',' ','Ŕ',' ',' ',' ',' ','Ŗ',' ',' ',' ',' ','Ř')
1173   call s:Accents('s',' ','ś','ŝ',' ',' ',' ','ş',' ','ȿ',' ',' ','š')
1174   call s:Accents('S',' ','Ś','Ŝ',' ',' ',' ','Ş',' ',' ',' ',' ','Š')
1175   call s:Accents('t',' ',' ',' ',' ',' ',' ','ţ',' ',' ',' ',' ','ť')
1176   call s:Accents('T',' ',' ',' ',' ',' ',' ','Ţ',' ',' ',' ',' ','Ť')
1177   call s:Accents('u','ù','ú','û','ü','ũ',' ',' ','ű','ų','ů','ŭ','ǔ')
1178   call s:Accents('U','Ù','Ú','Û','Ü','Ũ',' ',' ','Ű','Ų','Ů','Ŭ','Ǔ')
1179   call s:Accents('w',' ',' ','ŵ',' ',' ',' ',' ',' ',' ',' ',' ',' ')
1180   call s:Accents('W',' ',' ','Ŵ',' ',' ',' ',' ',' ',' ',' ',' ',' ')
1181   call s:Accents('y','ỳ','ý','ŷ','ÿ','ỹ',' ',' ',' ',' ',' ',' ',' ')
1182   call s:Accents('Y','Ỳ','Ý','Ŷ','Ÿ','Ỹ',' ',' ',' ',' ',' ',' ',' ')
1183   call s:Accents('z',' ','ź',' ',' ',' ','ż',' ',' ',' ',' ',' ','ž')
1184   call s:Accents('Z',' ','Ź',' ',' ',' ','Ż',' ',' ',' ',' ',' ','Ž')
1185   call s:Accents('\\i','ì','í','î','ï','ĩ','į',' ',' ',' ',' ','ĭ',' ')
1186   "                  \`  \'  \^  \"  \~  \.  \c  \H  \k  \r  \u  \v
1187   delfun s:Accents
1188   syn match texAccent   '\\aa\>'	conceal cchar=å
1189   syn match texAccent   '\\AA\>'	conceal cchar=Å
1190   syn match texAccent	'\\o\>'		conceal cchar=ø
1191   syn match texAccent	'\\O\>'		conceal cchar=Ø
1192   syn match texLigature	'\\AE\>'	conceal cchar=Æ
1193   syn match texLigature	'\\ae\>'	conceal cchar=æ
1194   syn match texLigature	'\\oe\>'	conceal cchar=œ
1195   syn match texLigature	'\\OE\>'	conceal cchar=Œ
1196   syn match texLigature	'\\ss\>'	conceal cchar=ß
1197  endif
1198 endif
1199endif
1200
1201" ---------------------------------------------------------------------
1202" LaTeX synchronization: {{{1
1203syn sync maxlines=200
1204syn sync minlines=50
1205
1206syn  sync match texSyncStop			groupthere NONE		"%stopzone\>"
1207
1208" Synchronization: {{{1
1209" The $..$ and $$..$$ make for impossible sync patterns
1210" (one can't tell if a "$$" starts or stops a math zone by itself)
1211" The following grouptheres coupled with minlines above
1212" help improve the odds of good syncing.
1213if !exists("tex_no_math")
1214 syn sync match texSyncMathZoneA		groupthere NONE		"\\end{abstract}"
1215 syn sync match texSyncMathZoneA		groupthere NONE		"\\end{center}"
1216 syn sync match texSyncMathZoneA		groupthere NONE		"\\end{description}"
1217 syn sync match texSyncMathZoneA		groupthere NONE		"\\end{enumerate}"
1218 syn sync match texSyncMathZoneA		groupthere NONE		"\\end{itemize}"
1219 syn sync match texSyncMathZoneA		groupthere NONE		"\\end{table}"
1220 syn sync match texSyncMathZoneA		groupthere NONE		"\\end{tabular}"
1221 syn sync match texSyncMathZoneA		groupthere NONE		"\\\(sub\)*section\>"
1222endif
1223
1224" ---------------------------------------------------------------------
1225" Highlighting: {{{1
1226if did_tex_syntax_inits == 1
1227 let did_tex_syntax_inits= 2
1228  " TeX highlighting groups which should share similar highlighting
1229  if !exists("s:tex_no_error")
1230   if !exists("tex_no_math")
1231    HiLink texBadMath		texError
1232    HiLink texMathDelimBad	texError
1233    HiLink texMathError		texError
1234    if !b:tex_stylish
1235      HiLink texOnlyMath	texError
1236    endif
1237   endif
1238   HiLink texError		Error
1239  endif
1240
1241  hi texBoldStyle		gui=bold	cterm=bold
1242  hi texItalStyle		gui=italic	cterm=italic
1243  hi texBoldItalStyle		gui=bold,italic cterm=bold,italic
1244  hi texItalBoldStyle		gui=bold,italic cterm=bold,italic
1245  HiLink texCite		texRefZone
1246  HiLink texDefCmd		texDef
1247  HiLink texDefName		texDef
1248  HiLink texDocType		texCmdName
1249  HiLink texDocTypeArgs		texCmdArgs
1250  HiLink texInputFileOpt	texCmdArgs
1251  HiLink texInputCurlies	texDelimiter
1252  HiLink texLigature		texSpecialChar
1253  if !exists("tex_no_math")
1254   HiLink texMathDelimSet1	texMathDelim
1255   HiLink texMathDelimSet2	texMathDelim
1256   HiLink texMathDelimKey	texMathDelim
1257   HiLink texMathMatcher	texMath
1258   HiLink texAccent		texStatement
1259   HiLink texGreek		texStatement
1260   HiLink texSuperscript	texStatement
1261   HiLink texSubscript		texStatement
1262   HiLink texSuperscripts 	texSuperscript
1263   HiLink texSubscripts 	texSubscript
1264   HiLink texMathSymbol		texStatement
1265   HiLink texMathZoneV		texMath
1266   HiLink texMathZoneW		texMath
1267   HiLink texMathZoneX		texMath
1268   HiLink texMathZoneY		texMath
1269   HiLink texMathZoneV		texMath
1270   HiLink texMathZoneZ		texMath
1271  endif
1272  HiLink texBeginEnd		texCmdName
1273  HiLink texBeginEndName	texSection
1274  HiLink texSpaceCode		texStatement
1275  HiLink texStyleStatement	texStatement
1276  HiLink texTypeSize		texType
1277  HiLink texTypeStyle		texType
1278
1279   " Basic TeX highlighting groups
1280  HiLink texCmdArgs		Number
1281  HiLink texCmdName		Statement
1282  HiLink texComment		Comment
1283  HiLink texDef			Statement
1284  HiLink texDefParm		Special
1285  HiLink texDelimiter		Delimiter
1286  HiLink texInput		Special
1287  HiLink texInputFile		Special
1288  HiLink texLength		Number
1289  HiLink texMath		Special
1290  HiLink texMathDelim		Statement
1291  HiLink texMathOper		Operator
1292  HiLink texNewCmd		Statement
1293  HiLink texNewEnv		Statement
1294  HiLink texOption		Number
1295  HiLink texRefZone		Special
1296  HiLink texSection		PreCondit
1297  HiLink texSpaceCodeChar	Special
1298  HiLink texSpecialChar		SpecialChar
1299  HiLink texStatement		Statement
1300  HiLink texString		String
1301  HiLink texTodo		Todo
1302  HiLink texType		Type
1303  HiLink texZone		PreCondit
1304
1305  delcommand HiLink
1306endif
1307
1308" Cleanup: {{{1
1309unlet s:extfname
1310let   b:current_syntax = "tex"
1311let &cpo               = s:keepcpo
1312unlet s:keepcpo
1313" vim: ts=8 fdm=marker
1314