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+" Vim syntax file
+" Language: BibTeX (bibliographic database format for (La)TeX)
+" Maintainer: Bernd Feige <Bernd.Feige@gmx.net>
+" Filenames: *.bib
+" Last Change: 2017 Sep 29
+
+" Thanks to those who pointed out problems with this file or supplied fixes!
+
+" Initialization
+" ==============
+" quit when a syntax file was already loaded
+if exists("b:current_syntax")
+ finish
+endif
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+" Ignore case
+syn case ignore
+
+" Keywords
+" ========
+syn keyword bibType contained article book booklet conference inbook
+syn keyword bibType contained incollection inproceedings manual
+syn keyword bibType contained mastersthesis misc phdthesis
+syn keyword bibType contained proceedings techreport unpublished
+syn keyword bibType contained string preamble
+
+syn keyword bibEntryKw contained address annote author booktitle chapter
+syn keyword bibEntryKw contained crossref edition editor howpublished
+syn keyword bibEntryKw contained institution journal key month note
+syn keyword bibEntryKw contained number organization pages publisher
+syn keyword bibEntryKw contained school series title type volume year
+
+" biblatex keywords, cf. http://mirrors.ctan.org/macros/latex/contrib/biblatex/doc/biblatex.pdf
+syn keyword bibType contained mvbook bookinbook suppbook collection mvcollection suppcollection
+syn keyword bibType contained online patent periodical suppperiodical mvproceedings reference
+syn keyword bibType contained mvreference inreference report set thesis xdata customa customb
+syn keyword bibType contained customc customd custome customf electronic www artwork audio bibnote
+syn keyword bibType contained commentary image jurisdiction legislation legal letter movie music
+syn keyword bibType contained performance review software standard video
+
+syn keyword bibEntryKw contained abstract isbn issn keywords url
+syn keyword bibEntryKw contained addendum afterwordannotation annotation annotator authortype
+syn keyword bibEntryKw contained bookauthor bookpagination booksubtitle booktitleaddon
+syn keyword bibEntryKw contained commentator date doi editora editorb editorc editortype
+syn keyword bibEntryKw contained editoratype editorbtype editorctype eid entrysubtype
+syn keyword bibEntryKw contained eprint eprintclass eprinttype eventdate eventtitle
+syn keyword bibEntryKw contained eventtitleaddon file foreword holder indextitle
+syn keyword bibEntryKw contained introduction isan ismn isrn issue issuesubtitle
+syn keyword bibEntryKw contained issuetitle iswc journalsubtitle journaltitle label
+syn keyword bibEntryKw contained language library location mainsubtitle maintitle
+syn keyword bibEntryKw contained maintitleaddon nameaddon origdate origlanguage
+syn keyword bibEntryKw contained origlocation origpublisher origtitle pagetotal
+syn keyword bibEntryKw contained pagination part pubstate reprinttitle shortauthor
+syn keyword bibEntryKw contained shorteditor shorthand shorthandintro shortjournal
+syn keyword bibEntryKw contained shortseries shorttitle subtitle titleaddon translator
+syn keyword bibEntryKw contained urldate venue version volumes entryset execute gender
+syn keyword bibEntryKw contained langid langidopts ids indexsorttitle options presort
+syn keyword bibEntryKw contained related relatedoptions relatedtype relatedstring
+syn keyword bibEntryKw contained sortkey sortname sortshorthand sorttitle sortyear xdata
+syn keyword bibEntryKw contained xref namea nameb namec nameatype namebtype namectype
+syn keyword bibEntryKw contained lista listb listc listd liste listf usera userb userc
+syn keyword bibEntryKw contained userd usere userf verba verbb verbc archiveprefix pdf
+syn keyword bibEntryKw contained primaryclass
+
+" Non-standard:
+" AMS mref http://www.ams.org/mref
+syn keyword bibNSEntryKw contained mrclass mrnumber mrreviewer fjournal coden
+
+" Clusters
+" ========
+syn cluster bibVarContents contains=bibUnescapedSpecial,bibBrace,bibParen,bibMath
+" This cluster is empty but things can be added externally:
+"syn cluster bibCommentContents
+
+" Matches
+" =======
+syn match bibUnescapedSpecial contained /[^\\][%&]/hs=s+1
+syn match bibKey contained /\s*[^ \t}="]\+,/hs=s,he=e-1 nextgroup=bibField
+syn match bibVariable contained /[^{}," \t=]/
+syn region bibComment start=/./ end=/^\s*@/me=e-1 contains=@bibCommentContents nextgroup=bibEntry
+syn region bibMath contained start=/\(\\\)\@<!\$/ end=/\$/ skip=/\(\\\$\)/
+syn region bibQuote contained start=/"/ end=/"/ skip=/\(\\"\)/ contains=@bibVarContents
+syn region bibBrace contained start=/{/ end=/}/ skip=/\(\\[{}]\)/ contains=@bibVarContents
+syn region bibParen contained start=/(/ end=/)/ skip=/\(\\[()]\)/ contains=@bibVarContents
+syn region bibField contained start="\S\+\s*=\s*" end=/[}),]/me=e-1 contains=bibEntryKw,bibNSEntryKw,bibBrace,bibParen,bibQuote,bibVariable
+syn region bibEntryData contained start=/[{(]/ms=e+1 end=/[})]/me=e-1 contains=bibKey,bibField,bibComment3
+" Actually, 5.8 <= Vim < 6.0 would ignore the `fold' keyword anyway, but Vim<5.8 would produce
+" an error, so we explicitly distinguish versions with and without folding functionality:
+syn region bibEntry start=/@\S\+\s*[{(]/ end=/^\s*[})]/ transparent fold contains=bibType,bibEntryData nextgroup=bibComment
+syn region bibComment2 start=/@Comment\s*[{(]/ end=/^\s*[})]/me=e-1 contains=@bibCommentContents nextgroup=bibEntry
+" biblatex style comments inside a bibEntry
+syn match bibComment3 "%.*"
+
+" Synchronization
+" ===============
+syn sync match All grouphere bibEntry /^\s*@/
+syn sync maxlines=200
+syn sync minlines=50
+
+" Highlighting defaults
+" =====================
+" Define the default highlighting.
+" Only when an item doesn't have highlighting yet
+
+hi def link bibType Identifier
+hi def link bibEntryKw Statement
+hi def link bibNSEntryKw PreProc
+hi def link bibKey Special
+hi def link bibVariable Constant
+hi def link bibUnescapedSpecial Error
+hi def link bibComment Comment
+hi def link bibComment2 Comment
+hi def link bibComment3 Comment
+
+let b:current_syntax = "bib"
+
+let &cpo = s:cpo_save
+unlet s:cpo_save