runtime/syntax/po.vim

" Vim syntax file
" Language:	po (gettext)
" Maintainer:	Dwayne Bailey <dwayne@translate.org.za>
" Last Change:	2015 Jun 07
" Contributors: Dwayne Bailey (Most advanced syntax highlighting)
"               Leonardo Fontenelle (Spell checking)
"               Nam SungHyun <namsh@kldp.org> (Original maintainer)

" quit when a syntax file was already loaded
if exists("b:current_syntax")
  finish
endif
let s:keepcpo= &cpo
set cpo&vim

syn sync minlines=10

" Identifiers
syn match  poStatementMsgCTxt "^msgctxt"
syn match  poStatementMsgidplural "^msgid_plural" contained
syn match  poPluralCaseN "[0-9]" contained
syn match  poStatementMsgstr "^msgstr\(\[[0-9]\]\)" contains=poPluralCaseN

" Simple HTML and XML highlighting
syn match  poHtml "<\_[^<>]\+>" contains=poHtmlTranslatables,poLineBreak
syn match  poHtmlNot +"<[^<]\+>"+ms=s+1,me=e-1
syn region poHtmlTranslatables start=+\(abbr\|alt\|content\|summary\|standby\|title\)=\\"+ms=e-1 end=+\\"+ contained contains=@Spell
syn match poLineBreak +"\n"+ contained

" Translation blocks
syn region     poMsgCTxt	matchgroup=poStatementMsgCTxt start=+^msgctxt "+rs=e-1 matchgroup=poStringCTxt end=+^msgid "+me=s-1 contains=poStringCTxt
syn region     poMsgID	matchgroup=poStatementMsgid start=+^msgid "+rs=e-1 matchgroup=poStringID end=+^msgstr\(\|\[[\]0\[]\]\) "+me=s-1 contains=poStringID,poStatementMsgidplural,poStatementMsgid
syn region     poMsgSTR	matchgroup=poStatementMsgstr start=+^msgstr\(\|\[[\]0\[]\]\) "+rs=e-1 matchgroup=poStringSTR end=+\n\n+me=s-1 contains=poStringSTR,poStatementMsgstr
syn region poStringCTxt	start=+"+ skip=+\\\\\|\\"+ end=+"+
syn region poStringID	start=+"+ skip=+\\\\\|\\"+ end=+"+ contained 
                            \ contains=poSpecial,poFormat,poCommentKDE,poPluralKDE,poKDEdesktopFile,poHtml,poAcceleratorId,poHtmlNot,poVariable
syn region poStringSTR	start=+"+ skip=+\\\\\|\\"+ end=+"+ contained 
                            \ contains=@Spell,poSpecial,poFormat,poHeaderItem,poCommentKDEError,poHeaderUndefined,poPluralKDEError,poMsguniqError,poKDEdesktopFile,poHtml,poAcceleratorStr,poHtmlNot,poVariable

" Header and Copyright
syn match     poHeaderItem "\(Project-Id-Version\|Report-Msgid-Bugs-To\|POT-Creation-Date\|PO-Revision-Date\|Last-Translator\|Language-Team\|Language\|MIME-Version\|Content-Type\|Content-Transfer-Encoding\|Plural-Forms\|X-Generator\): " contained
syn match     poHeaderUndefined "\(PACKAGE VERSION\|YEAR-MO-DA HO:MI+ZONE\|FULL NAME <EMAIL@ADDRESS>\|LANGUAGE <LL@li.org>\|CHARSET\|ENCODING\|INTEGER\|EXPRESSION\)" contained
syn match     poCopyrightUnset "SOME DESCRIPTIVE TITLE\|FIRST AUTHOR <EMAIL@ADDRESS>, YEAR\|Copyright (C) YEAR Free Software Foundation, Inc\|YEAR THE PACKAGE\'S COPYRIGHT HOLDER\|PACKAGE" contained

" Translation comment block including: translator comment, automatic coments, flags and locations
syn match     poComment "^#.*$"
syn keyword   poFlagFuzzy fuzzy contained
syn match     poCommentTranslator "^# .*$" contains=poCopyrightUnset
syn match     poCommentAutomatic "^#\..*$" 
syn match     poCommentSources	"^#:.*$"
syn match     poCommentFlags "^#,.*$" contains=poFlagFuzzy
syn match     poDiffOld '\(^#| "[^{]*+}\|{+[^}]*+}\|{+[^}]*\|"$\)' contained
syn match     poDiffNew '\(^#| "[^{]*-}\|{-[^}]*-}\|{-[^}]*\|"$\)' contained
syn match     poCommentDiff "^#|.*$" contains=poDiffOld,poDiffNew

" Translations (also includes header fields as they appear in a translation msgstr)
syn region poCommentKDE	  start=+"_: +ms=s+1 end="\\n" end="\"\n^msgstr"me=s-1 contained
syn region poCommentKDEError  start=+"\(\|\s\+\)_:+ms=s+1 end="\\n" end=+"\n\n+me=s-1 contained
syn match  poPluralKDE   +"_n: +ms=s+1 contained
syn region poPluralKDEError   start=+"\(\|\s\+\)_n:+ms=s+1 end="\"\n\n"me=s-1 contained
syn match  poSpecial	contained "\\\(x\x\+\|\o\{1,3}\|.\|$\)"
syn match  poFormat	"%\(\d\+\$\)\=[-+' #0*]*\(\d*\|\*\|\*\d\+\$\)\(\.\(\d*\|\*\|\*\d\+\$\)\)\=\([hlL]\|ll\)\=\([diuoxXfeEgGcCsSpn]\|\[\^\=.[^]]*\]\)" contained
syn match  poFormat	"%%" contained

" msguniq and msgcat conflicts
syn region poMsguniqError matchgroup=poMsguniqErrorMarkers  start="#-#-#-#-#"  end='#\("\n"\|\)-\("\n"\|\)#\("\n"\|\)-\("\n"\|\)#\("\n"\|\)-\("\n"\|\)#\("\n"\|\)-\("\n"\|\)#\("\n"\|\)\\n' contained

" Obsolete messages
syn match poObsolete "^#\~.*$" 

" KDE Name= handling
syn match poKDEdesktopFile "\"\(Name\|Comment\|GenericName\|Description\|Keywords\|About\)="ms=s+1,me=e-1

" Accelerator keys - this messes up if the preceding or following char is a multibyte unicode char
syn match poAcceleratorId  contained "[^&_~][&_~]\(\a\|\d\)[^:]"ms=s+1,me=e-1 
syn match poAcceleratorStr  contained "[^&_~][&_~]\(\a\|\d\)[^:]"ms=s+1,me=e-1 contains=@Spell

" Variables simple
syn match poVariable contained "%\d"

" Define the default highlighting.
" Only when an item doesn't have highlighting yet
command -nargs=+ HiLink hi def link <args>

HiLink poCommentSources    PreProc
HiLink poComment	     Comment
HiLink poCommentAutomatic  Comment
HiLink poCommentTranslator Comment
HiLink poCommentFlags      Special
HiLink poCommentDiff       Comment
HiLink poCopyrightUnset    Todo
HiLink poFlagFuzzy         Todo
HiLink poDiffOld           Todo
HiLink poDiffNew          Special
HiLink poObsolete         Comment

HiLink poStatementMsgid   Statement
HiLink poStatementMsgstr  Statement
HiLink poStatementMsgidplural  Statement
HiLink poStatementMsgCTxt Statement
HiLink poPluralCaseN      Constant

HiLink poStringCTxt	    Comment
HiLink poStringID	    String
HiLink poStringSTR	    String
HiLink poCommentKDE       Comment
HiLink poCommentKDEError  Error
HiLink poPluralKDE        Comment
HiLink poPluralKDEError   Error
HiLink poHeaderItem       Identifier
HiLink poHeaderUndefined  Todo
HiLink poKDEdesktopFile   Identifier

HiLink poHtml              Identifier
HiLink poHtmlNot           String
HiLink poHtmlTranslatables String
HiLink poLineBreak         String

HiLink poFormat	    poSpecial
HiLink poSpecial	    Special
HiLink poAcceleratorId    Special
HiLink poAcceleratorStr   Special
HiLink poVariable         Special

HiLink poMsguniqError        Special
HiLink poMsguniqErrorMarkers Comment

delcommand HiLink

let b:current_syntax = "po"

let &cpo = s:keepcpo
unlet s:keepcpo

" vim:set ts=8 sts=2 sw=2 noet: