" Vim syntax file
" Language:	Texinfo (macro package for TeX)
" Maintainer:	Sandor Kopanyi <sandor.kopanyi@altavista.net>
" URL:		<->
" Last Change:	1999 December 20
"
" the file follows the Texinfo manual structure; this file is based
" on manual for Texinfo version 3.12p, 9 August 1999
" since @ can have special meanings, everything is 'match'-ed and 'region'-ed
" (including @ in 'iskeyword' option has unexpected effects)


" Remove any old syntax stuff hanging around
syn clear

if !exists("main_syntax")
  let main_syntax = 'texinfo'
endif

"in Texinfo can be real big tables; sync for that
syn sync lines=200

"some general stuff
"syn match texinfoError      "\S" contained TODO
syn match texinfoIdent      "\k\+"                contained "IDENTifier
syn match texinfoAssignment "\k\+\s*=\s*\k\+\s*$" contained "assigment statement ( var = val )
syn match texinfoSinglePar  "\k\+\s*$"            contained "single parameter (used for several @-commands)
syn match texinfoIndexPar   "\k\k\s*$"            contained "param. used for different *index commands (+ @documentlanguage command)


"overview of Texinfo (chap. 1 in Texinfo manual)
syn match texinfoComment  "@c .*"
syn match texinfoComment  "@c$"
syn match texinfoComment  "@comment .*"
syn region texinfoComment matchgroup=texinfoAtCmd start="^@ignore\s*$" end="^@end ignore\s*$" contains=ALL


"beginning a Texinfo file (chap. 3 in Texinfo manual)
syn region texinfoPrmAtCmd     matchgroup=texinfoAtCmd start="@center "          skip="\\$" end="$"                    contains=texinfoSpecialChar,texinfoBrcPrmAtCmd oneline
syn region texinfoMltlnDMAtCmd matchgroup=texinfoAtCmd start="^@detailmenu\s*$"             end="^@end detailmenu\s*$" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn region texinfoPrmAtCmd     matchgroup=texinfoAtCmd start="^@setfilename "    skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd     matchgroup=texinfoAtCmd start="^@settitle "       skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd     matchgroup=texinfoAtCmd start="^@shorttitlepage " skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd     matchgroup=texinfoAtCmd start="^@title "          skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoBrcPrmAtCmd  matchgroup=texinfoAtCmd start="@titlefont{"                  end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn region texinfoPrmAtCmd     matchgroup=texinfoAtCmd start="^@vskip "          skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn match texinfoAtCmd "^@exampleindent"     nextgroup=texinfoSinglePar skipwhite
syn match texinfoAtCmd "^@headings"          nextgroup=texinfoSinglePar skipwhite
syn match texinfoAtCmd "^\\input"            nextgroup=texinfoSinglePar skipwhite
syn match texinfoAtCmd "^@paragraphindent"   nextgroup=texinfoSinglePar skipwhite
syn match texinfoAtCmd "^@setchapternewpage" nextgroup=texinfoSinglePar skipwhite
syn match texinfoAtCmd "^@titlepage\s*$"


"ending a Texinfo file (chap. 4 in Texinfo manual)
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="@author " skip="\\$" end="$" contains=texinfoSpecialChar oneline
"all below @bye should be comment TODO
syn match texinfoAtCmd "^@bye\s*$"
syn match texinfoAtCmd "^@contents\s*$"
syn match texinfoAtCmd "^@printindex" nextgroup=texinfoIndexPar skipwhite
syn match texinfoAtCmd "^@setcontentsaftertitlepage\s*$"
syn match texinfoAtCmd "^@setshortcontentsaftertitlepage\s*$"
syn match texinfoAtCmd "^@shortcontents\s*$"
syn match texinfoAtCmd "^@summarycontents\s*$"


"chapter structuring (chap. 5 in Texinfo manual)
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@appendix"            skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@appendixsec"         skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@appendixsection"     skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@appendixsubsec"      skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@appendixsubsubsec"   skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@centerchap"          skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@chapheading"         skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@chapter"             skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@heading"             skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@majorheading"        skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@section"             skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@subheading "         skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@subsection"          skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@subsubheading"       skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@subsubsection"       skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@subtitle"            skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@unnumbered"          skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@unnumberedsec"       skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@unnumberedsubsec"    skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@unnumberedsubsubsec" skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn match  texinfoAtCmd "^@lowersections\s*$"
syn match  texinfoAtCmd "^@raisesections\s*$"


"nodes (chap. 6 in Texinfo manual)
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@anchor{"            end="}"
syn region texinfoPrmAtCmd    matchgroup=texinfoAtCmd start="^@top"    skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd    matchgroup=texinfoAtCmd start="^@node"   skip="\\$" end="$" contains=texinfoSpecialChar oneline


"menus (chap. 7 in Texinfo manual)
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@menu\s*$" end="^@end menu\s*$" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd,texinfoMltlnDMAtCmd


"cross references (chap. 8 in Texinfo manual)
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@inforef{" end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@pxref{"   end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@ref{"     end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@uref{"    end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@xref{"    end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd


"marking words and phrases (chap. 9 in Texinfo manual)
"(almost) everything appears as 'contained' too; is for tables (@table)
syn match texinfoSpecialChar                                "@acronym"          contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@acronym{" end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@b"                contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@b{"       end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@cite"             contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@cite{"    end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@code"             contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@code{"    end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@command"          contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@command{" end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@dfn"              contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@dfn{"     end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@email"            contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@email{"   end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@emph"             contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@emph{"    end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@env"              contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@env{"     end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@file"             contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@file{"    end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@i"                contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@i{"       end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@kbd"              contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@kbd{"     end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@key"              contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@key{"     end="}" contains=texinfoSpecialChar
syn match texinfoSpecialChar                                "@option"           contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@option{"  end="}" contains=texinfoSpecialChar
syn match texinfoSpecialChar                                "@r"                contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@r{"       end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@samp"             contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@samp{"    end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@sc"               contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@sc{"      end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@strong"           contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@strong{"  end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@t"                contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@t{"       end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@url"              contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@url{"     end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoSpecialChar                                "@var"              contained
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@var{"     end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn match texinfoAtCmd "^@kbdinputstyle" nextgroup=texinfoSinglePar skipwhite


"quotations and examples (chap. 10 in Texinfo manual)
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@cartouche\s*$"        end="^@end cartouche\s*$"       contains=ALL
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@display\s*$"          end="^@end display\s*$"         contains=ALL
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@example\s*$"          end="^@end example\s*$"         contains=ALL
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@flushleft\s*$"        end="^@end flushleft\s*$"       contains=ALL
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@flushright\s*$"       end="^@end flushright\s*$"      contains=ALL
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@format\s*$"           end="^@end format\s*$"          contains=ALL
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@lisp\s*$"             end="^@end lisp\s*$"            contains=ALL
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@quotation\s*$"        end="^@end quotation\s*$"       contains=ALL
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@smalldisplay\s*$"     end="^@end smalldisplay\s*$"    contains=ALL
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@smallexample\s*$"     end="^@end smallexample\s*$"    contains=ALL
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@smallformat\s*$"      end="^@end smallformat\s*$"     contains=ALL
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@smalllisp\s*$"        end="^@end smalllisp\s*$"       contains=ALL
syn region texinfoPrmAtCmd   matchgroup=texinfoAtCmd start="^@exdent"    skip="\\$" end="$"                         contains=texinfoSpecialChar oneline
syn match texinfoAtCmd "^@noindent\s*$"
syn match texinfoAtCmd "^@smallbook\s*$"


"lists and tables (chap. 11 in Texinfo manual)
syn match texinfoAtCmd "@asis"             contained
syn match texinfoAtCmd "@columnfractions"  contained
syn match texinfoAtCmd "@item"             contained
syn match texinfoAtCmd "@itemx"            contained
syn match texinfoAtCmd "@tab"              contained
syn region texinfoMltlnAtCmd  matchgroup=texinfoAtCmd start="^@enumerate"  end="^@end enumerate\s*$"  contains=ALL
syn region texinfoMltlnAtCmd  matchgroup=texinfoAtCmd start="^@ftable"     end="^@end ftable\s*$"     contains=ALL
syn region texinfoMltlnNAtCmd matchgroup=texinfoAtCmd start="^@itemize"    end="^@end itemize\s*$"    contains=ALL
syn region texinfoMltlnNAtCmd matchgroup=texinfoAtCmd start="^@multitable" end="^@end multitable\s*$" contains=ALL
syn region texinfoMltlnNAtCmd matchgroup=texinfoAtCmd start="^@table"      end="^@end table\s*$"      contains=ALL
syn region texinfoMltlnAtCmd  matchgroup=texinfoAtCmd start="^@vtable"     end="^@end vtable\s*$"     contains=ALL


"indices (chap. 12 in Texinfo manual)
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@\(c\|f\|k\|p\|t\|v\)index"   skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@..index"                     skip="\\$" end="$" contains=texinfoSpecialChar oneline
"@defcodeindex and @defindex is defined after chap. 15's @def* commands (otherwise those ones will overwrite these ones)
syn match texinfoSIPar "\k\k\s*\k\k\s*$" contained
syn match texinfoAtCmd "^@syncodeindex" nextgroup=texinfoSIPar skipwhite
syn match texinfoAtCmd "^@synindex"     nextgroup=texinfoSIPar skipwhite

"special insertions (chap. 13 in Texinfo manual)
syn match texinfoSpecialChar "@\(!\|?\|@\|\s\)"
syn match texinfoSpecialChar "@{"
syn match texinfoSpecialChar "{@"
"accents
syn match texinfoSpecialChar "@\('\|\"\|=\|^\|`\|\~\)."
syn match texinfoSpecialChar "@dotaccent{.}"
syn match texinfoSpecialChar "@H{.}"
syn match texinfoSpecialChar "@,{.}"
syn match texinfoSpecialChar "@AA{}"
syn match texinfoSpecialChar "@aa{}"
syn match texinfoSpecialChar "@L{}"
syn match texinfoSpecialChar "@l{}"
syn match texinfoSpecialChar "@O{}"
syn match texinfoSpecialChar "@o{}"
syn match texinfoSpecialChar "@ringaccent{.}"
syn match texinfoSpecialChar "@tieaccent{..}"
syn match texinfoSpecialChar "@u{.}"
syn match texinfoSpecialChar "@ubaraccent{.}"
syn match texinfoSpecialChar "@udotaccent{.}"
syn match texinfoSpecialChar "@v{.}"
"ligatures
syn match texinfoSpecialChar "@AE{}"
syn match texinfoSpecialChar "@ae{}"
syn match texinfoSpecialChar "@copyright{}"
syn match texinfoSpecialChar "@bullet" contained "for tables and lists
syn match texinfoSpecialChar "@bullet{}"
syn match texinfoSpecialChar "@dots{}"
syn match texinfoSpecialChar "@enddots{}"
syn match texinfoSpecialChar "@equiv" contained "for tables and lists
syn match texinfoSpecialChar "@equiv{}"
syn match texinfoSpecialChar "@error{}"
syn match texinfoSpecialChar "@exclamdown{}"
syn match texinfoSpecialChar "@expansion{}"
syn match texinfoSpecialChar "@minus" contained "for tables and lists
syn match texinfoSpecialChar "@minus{}"
syn match texinfoSpecialChar "@OE{}"
syn match texinfoSpecialChar "@oe{}"
syn match texinfoSpecialChar "@point" contained "for tables and lists
syn match texinfoSpecialChar "@point{}"
syn match texinfoSpecialChar "@pounds{}"
syn match texinfoSpecialChar "@print{}"
syn match texinfoSpecialChar "@questiondown{}"
syn match texinfoSpecialChar "@result" contained "for tables and lists
syn match texinfoSpecialChar "@result{}"
syn match texinfoSpecialChar "@ss{}"
syn match texinfoSpecialChar "@TeX{}"
"other
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@dmn{"      end="}"
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@footnote{" end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@image{"    end="}"
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@math{"     end="}"
syn match texinfoAtCmd "@footnotestyle" nextgroup=texinfoSinglePar skipwhite


"making and preventing breaks (chap. 14 in Texinfo manual)
syn match texinfoSpecialChar  "@\(\*\|-\|\.\)"
syn match texinfoAtCmd        "^@need"     nextgroup=texinfoSinglePar skipwhite
syn match texinfoAtCmd        "^@page\s*$"
syn match texinfoAtCmd        "^@sp"       nextgroup=texinfoSinglePar skipwhite
syn region texinfoMltlnAtCmd  matchgroup=texinfoAtCmd start="^@group\s*$"   end="^@end group\s*$" contains=ALL
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@hyphenation{" end="}"
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@w{"           end="}"               contains=texinfoSpecialChar,texinfoBrcPrmAtCmd


"definition commands (chap. 15 in Texinfo manual)
syn match texinfoMltlnAtCmdFLine "^@def\k\+" contained
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@def\k\+" end="^@end def\k\+$"      contains=ALL

"next 2 commands are from chap. 12; must be defined after @def* commands above to overwrite them
syn match texinfoAtCmd "@defcodeindex" nextgroup=texinfoIndexPar skipwhite
syn match texinfoAtCmd "@defindex" nextgroup=texinfoIndexPar skipwhite


"conditionally visible text (chap. 16 in Texinfo manual)
syn match texinfoAtCmd "^@clear" nextgroup=texinfoSinglePar skipwhite
syn region texinfoMltln2AtCmd matchgroup=texinfoAtCmd start="^@html\s*$"        end="^@end html\s*$"
syn region texinfoMltlnAtCmd  matchgroup=texinfoAtCmd start="^@ifclear"         end="^@end ifclear\s*$"   contains=ALL
syn region texinfoMltlnAtCmd  matchgroup=texinfoAtCmd start="^@ifhtml"          end="^@end ifhtml\s*$"    contains=ALL
syn region texinfoMltlnAtCmd  matchgroup=texinfoAtCmd start="^@ifinfo"          end="^@end ifinfo\s*$"    contains=ALL
syn region texinfoMltlnAtCmd  matchgroup=texinfoAtCmd start="^@ifnothtml"       end="^@end ifnothtml\s*$" contains=ALL
syn region texinfoMltlnAtCmd  matchgroup=texinfoAtCmd start="^@ifnotinfo"       end="^@end ifnotinfo\s*$" contains=ALL
syn region texinfoMltlnAtCmd  matchgroup=texinfoAtCmd start="^@ifnottex"        end="^@end ifnottex\s*$"  contains=ALL
syn region texinfoMltlnAtCmd  matchgroup=texinfoAtCmd start="^@ifset"           end="^@end ifset\s*$"     contains=ALL
syn region texinfoMltlnAtCmd  matchgroup=texinfoAtCmd start="^@iftex"           end="^@end iftex\s*$"     contains=ALL
syn region texinfoPrmAtCmd    matchgroup=texinfoAtCmd start="^@set " skip="\\$" end="$" contains=texinfoSpecialChar oneline
syn region texCommand                                 start="\$\$"              end="\$\$" contained
syn region texinfoMltlnAtCmd  matchgroup=texinfoAtCmd start="^@tex"             end="^@end tex\s*$"         contains=texCommand
syn region texinfoBrcPrmAtCmd matchgroup=texinfoAtCmd start="@value{"           end="}" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd


"internationalization (chap. 17 in Texinfo manual)
syn match texinfoAtCmd "@documentencoding" nextgroup=texinfoSinglePar skipwhite
syn match texinfoAtCmd "@documentlanguage" nextgroup=texinfoIndexPar skipwhite


"defining new texinfo commands (chap. 18 in Texinfo manual)
syn match texinfoAtCmd  "@alias"                      nextgroup=texinfoAssignment skipwhite
syn match texinfoDIEPar "\S*\s*,\s*\S*\s*,\s*\S*\s*$" contained
syn match texinfoAtCmd  "@definfoenclose"             nextgroup=texinfoDIEPar     skipwhite
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@macro" end="^@end macro\s*$" contains=ALL


"formatting hardcopy (chap. 19 in Texinfo manual)
syn match texinfoAtCmd "^@afourlatex\s*$"
syn match texinfoAtCmd "^@afourpaper\s*$"
syn match texinfoAtCmd "^@afourwide\s*$"
syn match texinfoAtCmd "^@finalout\s*$"
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@pagesizes" end="$" oneline


"creating and installing Info Files (chap. 20 in Texinfo manual)
syn region texinfoPrmAtCmd   matchgroup=texinfoAtCmd start="^@dircategory"  skip="\\$" end="$" oneline
syn region texinfoMltlnAtCmd matchgroup=texinfoAtCmd start="^@direntry\s*$"            end="^@end direntry\s*$" contains=texinfoSpecialChar
syn match  texinfoAtCmd "^@novalidate\s*$"


"include files (appendix E in Texinfo manual)
syn match texinfoAtCmd "^@include" nextgroup=texinfoSinglePar skipwhite


"page headings (appendix F in Texinfo manual)
syn match texinfoHFSpecialChar "@|"               contained
syn match texinfoThisAtCmd     "@thischapter"     contained
syn match texinfoThisAtCmd     "@thischaptername" contained
syn match texinfoThisAtCmd     "@thisfile"        contained
syn match texinfoThisAtCmd     "@thispage"        contained
syn match texinfoThisAtCmd     "@thistitle"       contained
syn match texinfoThisAtCmd     "@today{}"         contained
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@evenfooting"  skip="\\$" end="$" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd,texinfoThisAtCmd,texinfoHFSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@evenheading"  skip="\\$" end="$" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd,texinfoThisAtCmd,texinfoHFSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@everyfooting" skip="\\$" end="$" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd,texinfoThisAtCmd,texinfoHFSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@everyheading" skip="\\$" end="$" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd,texinfoThisAtCmd,texinfoHFSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@oddfooting"   skip="\\$" end="$" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd,texinfoThisAtCmd,texinfoHFSpecialChar oneline
syn region texinfoPrmAtCmd matchgroup=texinfoAtCmd start="^@oddheading"   skip="\\$" end="$" contains=texinfoSpecialChar,texinfoBrcPrmAtCmd,texinfoThisAtCmd,texinfoHFSpecialChar oneline


"refilling paragraphs (appendix H in Texinfo manual)
syn match  texinfoAtCmd "@refill"


syn cluster texinfoAll contains=ALLBUT,{texinfoThisAtCmd,texinfoHFSpecialChar}
syn cluster texinfoReducedAll contains=texinfoSpecialChar,texinfoBrcPrmAtCmd
"==============================================================================
" highlighting

if !exists("did_texinfo_syntax_inits")
  let did_texinfo_syntax_inits = 1
  " The default methods for highlighting.  Can be overridden later

  hi link texinfoSpecialChar      Special
  hi link texinfoHFSpecialChar    Special

  hi link texinfoError            Error
  hi link texinfoIdent            Identifier
  hi link texinfoAssignment       Identifier
  hi link texinfoSinglePar        Identifier
  hi link texinfoIndexPar         Identifier
  hi link texinfoSIPar            Identifier
  hi link texinfoDIEPar           Identifier
  hi link texCommand              PreProc


  hi link texinfoAtCmd            Statement     "@-command
  hi link texinfoPrmAtCmd         String        "@-command in one line with unknown nr. of parameters
                                                "is String because is found as a region and is 'matchgroup'-ed
				                "to texinfoAtCmd
  hi link texinfoBrcPrmAtCmd      String        "@-command with parameter(s) in braces ({})
                                                "is String because is found as a region and is 'matchgroup'-ed to texinfoAtCmd
  hi link texinfoMltlnAtCmdFLine  texinfoAtCmd  "repeated embedded First lines in @-commands
  hi link texinfoMltlnAtCmd       String        "@-command in multiple lines
                                                "is String because is found as a region and is 'matchgroup'-ed to texinfoAtCmd
  hi link texinfoMltln2AtCmd      PreProc       "@-command in multiple lines (same as texinfoMltlnAtCmd, just with other colors)
  hi link texinfoMltlnDMAtCmd     PreProc       "@-command in multiple lines (same as texinfoMltlnAtCmd, just with other colors; used for @detailmenu, which can be included in @menu)
  hi link texinfoMltlnNAtCmd      Normal        "@-command in multiple lines (same as texinfoMltlnAtCmd, just with other colors)
  hi link texinfoThisAtCmd        Statement     "@-command used in headers and footers (@this... series)

  hi link texinfoComment      Comment
endif

let b:current_syntax = "texinfo"

if main_syntax == 'texinfo'
  unlet main_syntax
endif

" vim: ts=8
