" Vim syntax file
" Language:    TeX
" Maintainer:  Dr. Charles E. Campbell, Jr. <Charles.E.Campbell.1@nasa.gov>
" Last Change: Dec  3, 2002
" Version:     11
" URL:	http://www.erols.com/astronaut/vim/index.html#vimlinks_syntax
"
" Notes:
"
" 1. If you have a \begin{verbatim} that appears to overrun its boundaries,
"    use %stopzone.
"
" 2. Run-on equations ($..$ and $$..$$, particularly) can also be stopped
"    by suitable use of %stopzone.
"
" 3. If you have a slow computer, you may wish to modify
"
"        syn sync maxlines=200
"        syn sync minlines=50
"
"    to values that are more to your liking.
"
" 4. There is no match-syncing for $...$ and $$...$$; hence large
"    equation blocks constructed that way may exhibit syncing problems.
"    (there's no difference between begin/end patterns)
"
" 5. If you have the variable "tex_no_error" defined then none of the
"    lexical error-checking will be done.
"
"    ie. let tex_no_error=1

" For version 5.x: Clear all syntax items
" For version 6.x: Quit when a syntax file was already loaded
if version < 600
  syntax clear
elseif exists("b:current_syntax")
  finish
endif

" (La)TeX keywords only use the letters a-zA-Z
" but _ is the only one that causes problems.
let b:extfname=expand("%:e")
if version < 600
  set isk-=_
  if b:extfname == "sty" || b:extfname == "cls" || b:extfname == "clo" || b:extfname == "dtx" || b:extfname == "ltx"
    set isk+=@
  endif
else
  setlocal isk-=_
  if b:extfname == "sty" || b:extfname == "cls" || b:extfname == "clo" || b:extfname == "dtx" || b:extfname == "ltx"
    setlocal isk+=@
  endif
endif

" Clusters
" --------
syn cluster texCmdGroup	contains=texCmdBody,texComment,texDefParm,texDelimiter,texDocType,texInput,texLength,texLigature,texMathDelim,texMathError,texMathOper,texNewCmd,texNewEnv,texRefZone,texSection,texSectionMarker,texSectionName,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle
syn cluster texEnvGroup	contains=texMatcher,texMathDelim,texSpecialChar,texStatement
syn cluster texMatchGroup	contains=@texMathZones,texAccent,texBadMath,texComment,texDefCmd,texDelimiter,texDocType,texInput,texLength,texLigature,texMatcher,texNewCmd,texNewEnv,texOnlyMath,texParen,texRefZone,texSection,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle,texZone,texInputFile
if !exists("tex_no_math")
 syn cluster texMathDelimGroup contains=texMathDelimBad,texMathDelimKey,texMathDelimSet1,texMathDelimSet2
 syn cluster texMathMatchGroup contains=@texMathZones,texComment,texDefCmd,texDelimiter,texDocType,texInput,texLength,texLigature,texMathDelim,texMathError,texMathMatcher,texMathOper,texNewCmd,texNewEnv,texRefZone,texSection,texSpecialChar,texStatement,texString,texTypeSize,texTypeStyle,texZone
 syn cluster texMathZoneGroup	 contains=texComment,texDelimiter,texLength,texMathDelim,texMathError,texMathMatcher,texMathOper,texRefZone,texSpecialChar,texStatement,texTypeSize,texTypeStyle
 syn cluster texMathZones	 contains=texMathZoneA,texMathZoneB,texMathZoneC,texMathZoneD,texMathZoneE,texMathZoneF,texMathZoneG,texMathZoneH,texMathZoneI,texMathZoneJ,texMathZoneK,texMathZoneL,texMathZoneM,texMathZoneN,texMathZoneO,texMathZoneP,texMathZoneQ,texMathZoneR,texMathZoneS,texMathZoneT,texMathZoneU,texMathZoneV,texMathZoneW,texMathZoneX
endif

" Try to flag {} and () mismatches
syn region texMatcher	matchgroup=Delimiter start="{" skip="\\\\\|\\[{}]"	end="}"	contains=@texMatchGroup,texError
syn region texMatcher	matchgroup=Delimiter start="\["		end="]"	contains=@texMatchGroup,texError
syn region texParen	start="("				end=")"	contains=@texMatchGroup
syn match  texError	"[}\])]"
if !exists("tex_no_math")
 syn match  texMathError	"}"	contained
 syn region texMathMatcher	matchgroup=Delimiter start="{"  skip="\\\\\|\\}"  end="}" end="%stopzone\>" contained contains=@texMathMatchGroup
endif

" TeX/LaTeX keywords
" Instead of trying to be All Knowing, I just match \..alphameric..
" Note that *.tex files may not have "@" in their \commands
if b:extfname == "sty" || b:extfname == "cls" || b:extfname == "clo" || b:extfname == "dtx" || b:extfname == "ltx"
  syn match texStatement	"\\[a-zA-Z@]\+"
else
  syn match texStatement	"\\\a\+"
  syn match texError	"\\\a*@[a-zA-Z@]*"
endif

" TeX/LaTeX delimiters
syn match texDelimiter	"&"
syn match texDelimiter	"\\\\"

" texAccent (tnx to Karim Belabas) avoids annoying highlighting for accents
if b:extfname == "sty" || b:extfname == "cls" || b:extfname == "clo" || b:extfname == "dtx" || b:extfname == "ltx"
  syn match texAccent	"\\[bcdvuH][^a-zA-Z@]"me=e-1
  syn match texLigature	"\\\([ijolL]\|ae\|oe\|ss\|AA\|AE\|OE\)[^a-zA-Z@]"me=e-1
else
  syn match texAccent	"\\[bcdvuH]\A"me=e-1
  syn match texLigature	"\\\([ijolL]\|ae\|oe\|ss\|AA\|AE\|OE\)\A"me=e-1
endif
syn match texAccent	"\\[bcdvuH]$"
syn match texAccent	+\\[=^.\~"`']+
syn match texAccent	+\\['=t'.c^ud"vb~Hr]{\a}+
syn match texLigature	"\\\([ijolL]\|ae\|oe\|ss\|AA\|AE\|OE\)$"

" \begin{}/\end{} section markers
syn match  texSectionMarker	"\\begin\>\|\\end\>" nextgroup=texSectionName
syn region texSectionName	matchgroup=Delimiter start="{" end="}" contained

" \documentclass, \documentstyle, \usepackage
syn match  texDocType	"\\documentclass\>\|\\documentstyle\>\|\\usepackage\>"	nextgroup=texSectionName,texDocTypeArgs
syn region texDocTypeArgs	matchgroup=Delimiter start="\[" end="]"		contained	nextgroup=texSectionName

" TeX input
syn match texInput	"\\input\s\+[a-zA-Z/.0-9_^]\+"hs=s+7		contains=texStatement
syn match texInputFile	"\\include\(graphics\|list\)\=\(\[.\{-}\]\)\=\s*{.\{-}}"	contains=texStatement,texInputCurlies
syn match texInputFile	"\\\(epsfig\|input\|usepackage\)\s*\(\[.*\]\)\={.\{-}}"	contains=texStatement,texInputCurlies,texInputFileOpt
syn match texInputCurlies	"[{}]"				contained
syn region texInputFileOpt	matchgroup=Delimiter start="\[" end="\]"		contained

" Type Styles (LaTeX 2.09)
syn match texTypeStyle	"\\rm\>"
syn match texTypeStyle	"\\em\>"
syn match texTypeStyle	"\\bf\>"
syn match texTypeStyle	"\\it\>"
syn match texTypeStyle	"\\sl\>"
syn match texTypeStyle	"\\sf\>"
syn match texTypeStyle	"\\sc\>"
syn match texTypeStyle	"\\tt\>"

" Type Styles: attributes, commands, families, etc (LaTeX2E)
syn match texTypeStyle	"\\textbf\>"
syn match texTypeStyle	"\\textit\>"
syn match texTypeStyle	"\\textmd\>"
syn match texTypeStyle	"\\textrm\>"
syn match texTypeStyle	"\\textsc\>"
syn match texTypeStyle	"\\textsf\>"
syn match texTypeStyle	"\\textsl\>"
syn match texTypeStyle	"\\texttt\>"
syn match texTypeStyle	"\\textup\>"
syn match texTypeStyle	"\\emph\>"

syn match texTypeStyle	"\\mathbb\>"
syn match texTypeStyle	"\\mathbf\>"
syn match texTypeStyle	"\\mathcal\>"
syn match texTypeStyle	"\\mathfrak\>"
syn match texTypeStyle	"\\mathit\>"
syn match texTypeStyle	"\\mathnormal\>"
syn match texTypeStyle	"\\mathrm\>"
syn match texTypeStyle	"\\mathsf\>"
syn match texTypeStyle	"\\mathtt\>"

syn match texTypeStyle	"\\rmfamily\>"
syn match texTypeStyle	"\\sffamily\>"
syn match texTypeStyle	"\\ttfamily\>"

syn match texTypeStyle	"\\itshape\>"
syn match texTypeStyle	"\\scshape\>"
syn match texTypeStyle	"\\slshape\>"
syn match texTypeStyle	"\\upshape\>"

syn match texTypeStyle	"\\bfseries\>"
syn match texTypeStyle	"\\mdseries\>"

" Some type sizes
syn match texTypeSize	"\\tiny\>"
syn match texTypeSize	"\\scriptsize\>"
syn match texTypeSize	"\\footnotesize\>"
syn match texTypeSize	"\\small\>"
syn match texTypeSize	"\\normalsize\>"
syn match texTypeSize	"\\large\>"
syn match texTypeSize	"\\Large\>"
syn match texTypeSize	"\\LARGE\>"
syn match texTypeSize	"\\huge\>"
syn match texTypeSize	"\\Huge\>"

" Spacecodes (TeX'isms): \mathcode`\^^@="2201  \delcode`\(="028300  \sfcode`\)=0
" \uccode`X=`X  \lccode`x=`x
syn match texSpaceCode	"\\\(math\|cat\|del\|lc\|sf\|uc\)code`"me=e-1 nextgroup=texSpaceCodeChar
syn match texSpaceCodeChar	"`\\\=.\(\^.\)\==\(\d\|\"\x\{1,6}\|`.\)"	contained

" Sections, subsections, etc
syn match texSection	"\\\(sub\)*section\*\=\>"
syn match texSection	"\\\(title\|author\|part\|chapter\|paragraph\|subparagraph\)\>"
syn match texSection	"\\begin\s*{\s*abstract\s*}\|\\end\s*{\s*abstract\s*}"

" Bad Math (mismatched)
if !exists("tex_no_math")
 syn match texBadMath	"\\end\s*{\s*\(split\|align\|gather\|alignat\|flalign\|multline\)\s*}"
 syn match texBadMath	"\\end\s*{\s*\(equation\|eqnarray\|displaymath\)\*\=\s*}"
 syn match texBadMath	"\\[\])]"
endif

" Math Zones
if !exists("tex_no_math")
 syn region texMathZoneA	start="\\begin\s*{\s*align\*\s*}"	end="\\end\s*{\s*align\*\s*}"		keepend contains=@texMathZoneGroup
 syn region texMathZoneB	start="\\begin\s*{\s*alignat\*\s*}"	end="\\end\s*{\s*alignat\*\s*}"	keepend contains=@texMathZoneGroup
 syn region texMathZoneC	start="\\begin\s*{\s*alignat\s*}"	end="\\end\s*{\s*alignat\s*}"		keepend contains=@texMathZoneGroup
 syn region texMathZoneD	start="\\begin\s*{\s*align\s*}"	end="\\end\s*{\s*align\s*}"		keepend contains=@texMathZoneGroup
 syn region texMathZoneE	start="\\begin\s*{\s*eqnarray\*\s*}"	end="\\end\s*{\s*eqnarray\*\s*}"	keepend contains=@texMathZoneGroup
 syn region texMathZoneF	start="\\begin\s*{\s*eqnarray\s*}"	end="\\end\s*{\s*eqnarray\s*}"	keepend contains=@texMathZoneGroup
 syn region texMathZoneG	start="\\begin\s*{\s*equation\*\s*}"	end="\\end\s*{\s*equation\*\s*}"	keepend contains=@texMathZoneGroup
 syn region texMathZoneH	start="\\begin\s*{\s*equation\s*}"	end="\\end\s*{\s*equation\s*}"	keepend contains=@texMathZoneGroup
 syn region texMathZoneI	start="\\begin\s*{\s*flalign\*\s*}"	end="\\end\s*{\s*flalign\*\s*}"	keepend contains=@texMathZoneGroup
 syn region texMathZoneJ	start="\\begin\s*{\s*flalign\s*}"	end="\\end\s*{\s*flalign\s*}"		keepend contains=@texMathZoneGroup
 syn region texMathZoneK	start="\\begin\s*{\s*gather\*\s*}"	end="\\end\s*{\s*gather\*\s*}"	keepend contains=@texMathZoneGroup
 syn region texMathZoneL	start="\\begin\s*{\s*gather\s*}"	end="\\end\s*{\s*gather\s*}"		keepend contains=@texMathZoneGroup
 syn region texMathZoneM	start="\\begin\s*{\s*math\*\s*}"	end="\\end\s*{\s*math\*\s*}"		keepend contains=@texMathZoneGroup
 syn region texMathZoneN	start="\\begin\s*{\s*math\s*}"	end="\\end\s*{\s*math\s*}"		keepend contains=@texMathZoneGroup
 syn region texMathZoneO	start="\\begin\s*{\s*multline\s*}"	end="\\end\s*{\s*multline\s*}"	keepend contains=@texMathZoneGroup
 syn region texMathZoneP	start="\\begin\s*{\s*split\s*}"	end="\\end\s*{\s*split\s*}"		keepend contains=@texMathZoneGroup
 syn region texMathZoneQ	start="\\begin\s*{\s*displaymath\*\s*}"	end="\\end\s*{\s*displaymath\*\s*}"	keepend contains=@texMathZoneGroup
 syn region texMathZoneR	start="\\begin\s*{\s*displaymath\s*}"	end="\\end\s*{\s*displaymath\s*}"	keepend contains=@texMathZoneGroup
 syn region texMathZoneS	start="\\begin\s*{\s*multline\*\s*}"	end="\\end\s*{\s*multline\*\s*}"	keepend contains=@texMathZoneGroup
 syn region texMathZoneT	matchgroup=Delimiter start="\\("  matchgroup=Delimiter end="\\)\|%stopzone\>"	keepend contains=@texMathZoneGroup
 syn region texMathZoneU	matchgroup=Delimiter start="\\\[" matchgroup=Delimiter end="\\]\|%stopzone\>"	keepend contains=@texMathZoneGroup

 syn region texMathZoneV	matchgroup=Delimiter start="\$"   skip="\\\\\|\\\$" matchgroup=Delimiter end="\$" end="%stopzone\>"	contains=@texMathZoneGroup
 syn region texMathZoneW	matchgroup=Delimiter start="\$\$" matchgroup=Delimiter end="\$\$" end="%stopzone\>"	keepend	contains=@texMathZoneGroup
 syn region texMathZoneX	matchgroup=texStatement start="\\ensuremath\s*{" matchgroup=texStatement end="}" end="%stopzone\>"	contains=@texMathZoneGroup

 syn match texMathOper	"[_^=]" contained

 " \left..something.. and \right..something.. support
 syn match   texMathDelimBad	contained	"\S"
 syn match   texMathDelim		"\\\(left\|right\)\>"	skipwhite nextgroup=texMathDelimSet1,texMathDelimSet2,texMathDelimBad
 syn match   texMathDelim		"\\\(left\|right\)arrow\>"
 syn match   texMathDelim		"\\lefteqn\>"
 syn match   texMathDelimSet2	contained	"\\"	nextgroup=texMathDelimKey,texMathDelimBad
 syn match   texMathDelimSet1	contained	"[<>()[\]|/.]\|\\[{}|]"
 syn keyword texMathDelimKey   contained	Downarrow	backslash	lceil	rceil	uparrow
 syn keyword texMathDelimKey   contained	Uparrow	downarrow	lfloor	rfloor	updownarrow
 syn keyword texMathDelimKey   contained	Updownarrow	langle	rangle	Vert
endif

" special TeX characters  ( \$ \& \% \# \{ \} \_ \S \P )
syn match texSpecialChar	"\\[$&%#{}_]"
if b:extfname == "sty" || b:extfname == "cls" || b:extfname == "clo" || b:extfname == "dtx" || b:extfname == "ltx"
  syn match texSpecialChar	"\\[SP@][^a-zA-Z@]"me=e-1
else
  syn match texSpecialChar	"\\[SP@]\A"me=e-1
endif
syn match texSpecialChar	"\\\\"
if !exists("tex_no_math")
 syn match texOnlyMath	"[_^]"
endif
syn match texSpecialChar	"\^\^[0-9a-f]\{2}\|\^\^\S"

" Comments:    Normal TeX LaTeX     :   %....
"              Documented TeX Format:  ^^A...    -and-  leading %s (only)
syn cluster texCommentGroup	contains=texTodo
syn case ignore
syn keyword texTodo	contained	combak	fixme	todo
syn case match
if b:extfname == "dtx"
  syn match texComment	"\^\^A.*$"	contains=@texCommentGroup
  syn match texComment	"^%\+"	contains=@texCommentGroup
else
  syn match texComment	"%.*$"	contains=@texCommentGroup
endif

" separate lines used for verb` and verb# so that the end conditions
" will appropriately terminate.  Ideally vim would let me save a
" character from the start pattern and re-use it in the end-pattern.
syn region texZone	start="\\begin{verbatim}"		end="\\end{verbatim}\|%stopzone\>"
if version < 600
 syn region texZone	start="\\verb`"		end="`\|%stopzone\>"
 syn region texZone	start="\\verb#"		end="#\|%stopzone\>"
else
  if b:extfname == "sty" || b:extfname == "cls" || b:extfname == "clo" || b:extfname == "dtx" || b:extfname == "ltx"
    syn region texZone	start="\\verb\z([^ \ta-zA-Z@]\)"	end="\z1\|%stopzone\>"
  else
    syn region texZone	start="\\verb\z([^ \ta-zA-Z]\)"	end="\z1\|%stopzone\>"
  endif
endif
syn region texZone	start="@samp{"		end="}\|%stopzone\>"
syn region texRefZone	matchgroup=texStatement start="\\nocite{"	   keepend end="}\|%stopzone\>"  contains=texComment,texDelimiter
syn region texRefZone	matchgroup=texStatement start="\\bibliography{" keepend end="}\|%stopzone\>"  contains=texComment,texDelimiter
syn region texRefZone	matchgroup=texStatement start="\\cite\([tp]\*\=\)\={"   keepend end="}\|%stopzone\>"  contains=texComment,texDelimiter
syn region texRefZone	matchgroup=texStatement start="\\label{"	   keepend end="}\|%stopzone\>"  contains=texComment,texDelimiter
syn region texRefZone	matchgroup=texStatement start="\\pageref{"	   keepend end="}\|%stopzone\>"  contains=texComment,texDelimiter
syn region texRefZone	matchgroup=texStatement start="\\v\=ref{"	   keepend end="}\|%stopzone\>"  contains=texComment,texDelimiter

" handle newcommand, newenvironment
syn match  texNewCmd		"\\newcommand\>"		nextgroup=texCmdName skipwhite skipnl
syn region texCmdName contained matchgroup=Delimiter start="{"rs=s+1  end="}"	nextgroup=texCmdArgs,texCmdBody skipwhite skipnl
syn region texCmdArgs contained matchgroup=Delimiter start="\["rs=s+1 end="]"	nextgroup=texCmdBody skipwhite skipnl
syn region texCmdBody contained matchgroup=Delimiter start="{"rs=s+1 skip="\\\\\|\\[{}]"	matchgroup=Delimiter end="}" contains=@texCmdGroup
syn match  texNewEnv		"\\newenvironment\>"		nextgroup=texEnvName skipwhite skipnl
syn region texEnvName contained matchgroup=Delimiter start="{"rs=s+1  end="}"	nextgroup=texEnvBgn skipwhite skipnl
syn region texEnvBgn  contained matchgroup=Delimiter start="{"rs=s+1  end="}"	nextgroup=texEnvEnd skipwhite skipnl contains=@texEnvGroup
syn region texEnvEnd  contained matchgroup=Delimiter start="{"rs=s+1  end="}"	skipwhite skipnl contains=@texEnvGroup

syn match texDefCmd		"\\def\>"			nextgroup=texDefName skipwhite skipnl
if b:extfname == "sty" || b:extfname == "cls" || b:extfname == "clo" || b:extfname == "dtx" || b:extfname == "ltx"
  syn match texDefName contained	"\\[a-zA-Z@]\+"		nextgroup=texDefParms,texCmdBody skipwhite skipnl
  syn match texDefName contained	"\\[^a-zA-Z@]"			nextgroup=texDefParms,texCmdBody skipwhite skipnl
else
  syn match texDefName contained	"\\\a\+"			nextgroup=texDefParms,texCmdBody skipwhite skipnl
  syn match texDefName contained	"\\\A"			nextgroup=texDefParms,texCmdBody skipwhite skipnl
endif
syn match texDefParms  contained	"#[^{]*"	contains=texDefParm nextgroup=texCmdBody skipwhite skipnl
syn match  texDefParm  contained	"#\d\+"

" TeX Lengths
syn match  texLength	"\<\d\+\(\.\d\+\)\=\(bp\|cc\|cm\|dd\|em\|ex\|in\|mm\|pc\|pt\|sp\)\>"

" TeX String Delimiters
syn match texString	"\(``\|''\|,,\)"

" LaTeX synchronization
syn sync maxlines=200
syn sync minlines=50

if !exists("tex_no_math")
 syn sync match texSyncMathZoneA	grouphere texMathZoneA	"\\begin\s*{\s*align\*\s*}"
 syn sync match texSyncMathZoneB	grouphere texMathZoneB	"\\begin\s*{\s*alignat\*\s*}"
 syn sync match texSyncMathZoneC	grouphere texMathZoneC	"\\begin\s*{\s*alignat\s*}"
 syn sync match texSyncMathZoneD	grouphere texMathZoneD	"\\begin\s*{\s*align\s*}"
 syn sync match texSyncMathZoneE	grouphere texMathZoneE	"\\begin\s*{\s*eqnarray\*\s*}"
 syn sync match texSyncMathZoneF	grouphere texMathZoneF	"\\begin\s*{\s*eqnarray\s*}"
 syn sync match texSyncMathZoneG	grouphere texMathZoneG	"\\begin\s*{\s*equation\*\s*}"
 syn sync match texSyncMathZoneH	grouphere texMathZoneH	"\\begin\s*{\s*equation\s*}"
 syn sync match texSyncMathZoneI	grouphere texMathZoneI	"\\begin\s*{\s*flalign\*\s*}"
 syn sync match texSyncMathZoneJ	grouphere texMathZoneJ	"\\begin\s*{\s*flalign\s*}"
 syn sync match texSyncMathZoneK	grouphere texMathZoneK	"\\begin\s*{\s*gather\*\s*}"
 syn sync match texSyncMathZoneL	grouphere texMathZoneL	"\\begin\s*{\s*gather\s*}"
 syn sync match texSyncMathZoneM	grouphere texMathZoneM	"\\begin\s*{\s*math\*\s*}"
 syn sync match texSyncMathZoneN	grouphere texMathZoneN	"\\begin\s*{\s*math\s*}"
 syn sync match texSyncMathZoneO	grouphere texMathZoneO	"\\begin\s*{\s*multline\s*}"
 syn sync match texSyncMathZoneP	grouphere texMathZoneP	"\\begin\s*{\s*split\s*}"
 syn sync match texSyncMathZoneQ	grouphere texMathZoneQ	"\\begin\s*{\s*displaymath\*\s*}"
 syn sync match texSyncMathZoneR	grouphere texMathZoneR	"\\begin\s*{\s*displaymath\s*}"
 syn sync match texSyncMathZoneS	grouphere texMathZoneS	"\\begin\s*{\s*multline\*\s*}"
 syn sync match texSyncMathZoneT	grouphere texMathZoneT	"\\("
 syn sync match texSyncMathZoneU	grouphere texMathZoneU	"\\\["

 syn sync match texSyncMathZoneA	groupthere NONE	"\\end\s*{\s*align\*\s*}"
 syn sync match texSyncMathZoneB	groupthere NONE	"\\end\s*{\s*alignat\*\s*}"
 syn sync match texSyncMathZoneC	groupthere NONE	"\\end\s*{\s*alignat\s*}"
 syn sync match texSyncMathZoneD	groupthere NONE	"\\end\s*{\s*align\s*}"
 syn sync match texSyncMathZoneE	groupthere NONE	"\\end\s*{\s*eqnarray\*\s*}"
 syn sync match texSyncMathZoneF	groupthere NONE	"\\end\s*{\s*eqnarray\s*}"
 syn sync match texSyncMathZoneG	groupthere NONE	"\\end\s*{\s*equation\*\s*}"
 syn sync match texSyncMathZoneH	groupthere NONE	"\\end\s*{\s*equation\s*}"
 syn sync match texSyncMathZoneI	groupthere NONE	"\\end\s*{\s*flalign\*\s*}"
 syn sync match texSyncMathZoneJ	groupthere NONE	"\\end\s*{\s*flalign\s*}"
 syn sync match texSyncMathZoneK	groupthere NONE	"\\end\s*{\s*gather\*\s*}"
 syn sync match texSyncMathZoneL	groupthere NONE	"\\end\s*{\s*gather\s*}"
 syn sync match texSyncMathZoneM	groupthere NONE	"\\end\s*{\s*math\*\s*}"
 syn sync match texSyncMathZoneN	groupthere NONE	"\\end\s*{\s*math\s*}"
 syn sync match texSyncMathZoneO	groupthere NONE	"\\end\s*{\s*multline\s*}"
 syn sync match texSyncMathZoneP	groupthere NONE	"\\end\s*{\s*split\s*}"
 syn sync match texSyncMathZoneQ	groupthere NONE	"\\end\s*{\s*displaymath\*\s*}"
 syn sync match texSyncMathZoneR	groupthere NONE	"\\end\s*{\s*displaymath\s*}"
 syn sync match texSyncMathZoneS	groupthere NONE	"\\end\s*{\s*multline\*\s*}"
 syn sync match texSyncMathZoneT	groupthere NONE	"\\)"
 syn sync match texSyncMathZoneU	groupthere NONE	"\\\]"
endif
syn sync match texSyncStop		groupthere NONE	"%stopzone\>"

" The $..$ and $$..$$ make for impossible sync patterns
" (one can't tell if a "$$" starts or stops a math zone by itself)
" The following grouptheres coupled with minlines above
" help improve the odds of good syncing.
if !exists("tex_no_math")
 syn sync match texSyncMathZoneS	groupthere NONE	"\\end{abstract}"
 syn sync match texSyncMathZoneS	groupthere NONE	"\\end{center}"
 syn sync match texSyncMathZoneS	groupthere NONE	"\\end{description}"
 syn sync match texSyncMathZoneS	groupthere NONE	"\\end{enumerate}"
 syn sync match texSyncMathZoneS	groupthere NONE	"\\end{itemize}"
 syn sync match texSyncMathZoneS	groupthere NONE	"\\end{table}"
 syn sync match texSyncMathZoneS	groupthere NONE	"\\end{tabular}"
 syn sync match texSyncMathZoneS	groupthere NONE	"\\\(sub\)*section\>"
endif

" Define the default highlighting.
" For version 5.7 and earlier: only when not done already
" For version 5.8 and later: only when an item doesn't have highlighting yet
if version >= 508 || !exists("did_tex_syntax_inits")
  if version < 508
    let did_tex_syntax_inits = 1
    command -nargs=+ HiLink hi link <args>
  else
    command -nargs=+ HiLink hi def link <args>
  endif

  " TeX highlighting groups which should share similar highlighting
  if !exists("tex_no_error")
   if !exists("tex_no_math")
    HiLink texBadMath	texError
    HiLink texMathDelimBad	texError
    HiLink texMathError	texError
    if b:extfname != "sty" && b:extfname != "cls" && b:extfname != "clo" && b:extfname != "dtx" && b:extfname != "ltx"
      HiLink texOnlyMath	texError
    endif
   endif
   HiLink texError	Error
  endif

  HiLink texDefCmd	texDef
  HiLink texDefName	texDef
  HiLink texDocType	texCmdName
  HiLink texDocTypeArgs	texCmdArgs
  HiLink texInputFileOpt	texCmdArgs
  HiLink texInputCurlies	texDelimiter
  HiLink texLigature	texSpecialChar
  if !exists("tex_no_math")
   HiLink texMathDelimSet1	texMathDelim
   HiLink texMathDelimSet2	texMathDelim
   HiLink texMathDelimKey	texMathDelim
   HiLink texMathMatcher	texMath
   HiLink texMathZoneA	texMath
   HiLink texMathZoneB	texMath
   HiLink texMathZoneC	texMath
   HiLink texMathZoneD	texMath
   HiLink texMathZoneE	texMath
   HiLink texMathZoneF	texMath
   HiLink texMathZoneG	texMath
   HiLink texMathZoneH	texMath
   HiLink texMathZoneI	texMath
   HiLink texMathZoneJ	texMath
   HiLink texMathZoneK	texMath
   HiLink texMathZoneL	texMath
   HiLink texMathZoneM	texMath
   HiLink texMathZoneN	texMath
   HiLink texMathZoneO	texMath
   HiLink texMathZoneP	texMath
   HiLink texMathZoneQ	texMath
   HiLink texMathZoneR	texMath
   HiLink texMathZoneS	texMath
   HiLink texMathZoneT	texMath
   HiLink texMathZoneU	texMath
   HiLink texMathZoneV	texMath
   HiLink texMathZoneW	texMath
   HiLink texMathZoneX	texMath
  endif
  HiLink texSectionMarker	texCmdName
  HiLink texSectionName	texSection
  HiLink texSpaceCode	texStatement
  HiLink texTypeSize	texType
  HiLink texTypeStyle	texType

   " Basic TeX highlighting groups
  HiLink texCmdArgs	Number
  HiLink texCmdName	Statement
  HiLink texComment	Comment
  HiLink texDef	Statement
  HiLink texDefParm	Special
  HiLink texDelimiter	Delimiter
  HiLink texInput	Special
  HiLink texInputFile	Special
  HiLink texLength	Number
  HiLink texMath	Special
  HiLink texMathDelim	Statement
  HiLink texMathOper	Operator
  HiLink texNewCmd	Statement
  HiLink texNewEnv	Statement
  HiLink texRefZone	Special
  HiLink texSection	PreCondit
  HiLink texSpaceCodeChar	Special
  HiLink texSpecialChar	SpecialChar
  HiLink texStatement	Statement
  HiLink texString	String
  HiLink texTodo	Todo
  HiLink texType	Type
  HiLink texZone	PreCondit

  delcommand HiLink
endif

unlet b:extfname
let   b:current_syntax = "tex"
" vim: ts=15
