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-rw-r--r--runtime/syntax/bib.vim52
1 files changed, 20 insertions, 32 deletions
diff --git a/runtime/syntax/bib.vim b/runtime/syntax/bib.vim
index 8bd0528e1e..ac8dcda678 100644
--- a/runtime/syntax/bib.vim
+++ b/runtime/syntax/bib.vim
@@ -2,17 +2,14 @@
" Language: BibTeX (bibliographic database format for (La)TeX)
" Maintainer: Bernd Feige <Bernd.Feige@gmx.net>
" Filenames: *.bib
-" Last Change: 2016 May 31
+" Last Change: 2017 Sep 29
" Thanks to those who pointed out problems with this file or supplied fixes!
" Initialization
" ==============
-" 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")
+" quit when a syntax file was already loaded
+if exists("b:current_syntax")
finish
endif
@@ -74,7 +71,7 @@ syn keyword bibNSEntryKw contained mrclass mrnumber mrreviewer fjournal coden
" Clusters
" ========
-syn cluster bibVarContents contains=bibUnescapedSpecial,bibBrace,bibParen
+syn cluster bibVarContents contains=bibUnescapedSpecial,bibBrace,bibParen,bibMath
" This cluster is empty but things can be added externally:
"syn cluster bibCommentContents
@@ -84,19 +81,18 @@ 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
+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:
-if version < 600
- syn region bibEntry start=/@\S\+\s*[{(]/ end=/^\s*[})]/ transparent contains=bibType,bibEntryData nextgroup=bibComment
-else
- syn region bibEntry start=/@\S\+\s*[{(]/ end=/^\s*[})]/ transparent fold contains=bibType,bibEntryData nextgroup=bibComment
-endif
+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
" ===============
@@ -107,25 +103,17 @@ syn sync minlines=50
" Highlighting defaults
" =====================
" 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_bib_syn_inits")
- if version < 508
- let did_bib_syn_inits = 1
- command -nargs=+ HiLink hi link <args>
- else
- command -nargs=+ HiLink hi def link <args>
- endif
- HiLink bibType Identifier
- HiLink bibEntryKw Statement
- HiLink bibNSEntryKw PreProc
- HiLink bibKey Special
- HiLink bibVariable Constant
- HiLink bibUnescapedSpecial Error
- HiLink bibComment Comment
- HiLink bibComment2 Comment
- delcommand HiLink
-endif
+" 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"