Edit File: mail.vim
" Vim syntax file " Language: Mail file " Previous Maintainer: Felix von Leitner <leitner@math.fu-berlin.de> " Maintainer: Gautam Iyer <gi1242@users.sourceforge.net> " Last Change: Thu 17 Jan 2008 11:25:44 AM PST " Quit when a syntax file was already loaded if exists("b:current_syntax") finish endif " The mail header is recognized starting with a "keyword:" line and ending " with an empty line or other line that can't be in the header. All lines of " the header are highlighted. Headers of quoted messages (quoted with >) are " also highlighted. " Syntax clusters syn cluster mailHeaderFields contains=mailHeaderKey,mailSubject,mailHeaderEmail,@mailLinks syn cluster mailLinks contains=mailURL,mailEmail syn cluster mailQuoteExps contains=mailQuoteExp1,mailQuoteExp2,mailQuoteExp3,mailQuoteExp4,mailQuoteExp5,mailQuoteExp6 syn case match " For "From " matching case is required. The "From " is not matched in quoted " emails " According to RFC 2822 any printable ASCII character can appear in a field " name, except ':'. syn region mailHeader contains=@mailHeaderFields,@NoSpell start="^From .*\d\d\d\d$" skip="^\s" end="\v^[!-9;-~]*([^!-~]|$)"me=s-1 syn match mailHeaderKey contained contains=mailEmail,@NoSpell "^From\s.*\d\d\d\d$" " Usenet headers syn match mailHeaderKey contained contains=mailHeaderEmail,mailEmail,@NoSpell "\v(^(\> ?)*)@<=(Newsgroups|Followup-To|Message-ID|Supersedes|Control):.*$" syn case ignore " Nothing else depends on case. Headers in properly quoted (with "> " or ">") " emails are matched syn region mailHeader keepend contains=@mailHeaderFields,@mailQuoteExps,@NoSpell start="^\z(\(> \?\)*\)\v(newsgroups|x-([a-z\-])*|path|xref|message-id|from|((in-)?reply-)?to|b?cc|subject|return-path|received|date|replied):" skip="^\z1\s" end="\v^\z1[!-9;-~]*([^!-~]|$)"me=s-1 end="\v^\z1@!"me=s-1 end="\v^\z1(\> ?)+"me=s-1 syn region mailHeaderKey contained contains=mailHeaderEmail,mailEmail,@mailQuoteExps,@NoSpell start="\v(^(\> ?)*)@<=(to|b?cc):" skip=",$" end="$" syn match mailHeaderKey contained contains=mailHeaderEmail,mailEmail,@NoSpell "\v(^(\> ?)*)@<=(from|reply-to):.*$" syn match mailHeaderKey contained contains=@NoSpell "\v(^(\> ?)*)@<=date:" syn match mailSubject contained "\v^subject:.*$" syn match mailSubject contained contains=@NoSpell "\v(^(\> ?)+)@<=subject:.*$" " Anything in the header between < and > is an email address syn match mailHeaderEmail contained contains=@NoSpell "<.\{-}>" " Mail Signatures. (Begin with "-- ", end with change in quote level) syn region mailSignature keepend contains=@mailLinks,@mailQuoteExps start="^--\s$" end="^$" end="^\(> \?\)\+"me=s-1 syn region mailSignature keepend contains=@mailLinks,@mailQuoteExps,@NoSpell start="^\z(\(> \?\)\+\)--\s$" end="^\z1$" end="^\z1\@!"me=s-1 end="^\z1\(> \?\)\+"me=s-1 " URLs start with a known protocol or www,web,w3. syn match mailURL contains=@NoSpell `\v<(((https?|ftp|gopher)://|(mailto|file|news):)[^' <>"]+|(www|web|w3)[a-z0-9_-]*\.[a-z0-9._-]+\.[^' <>"]+)[a-z0-9/]` syn match mailEmail contains=@NoSpell "\v[_=a-z\./+0-9-]+\@[a-z0-9._-]+\a{2}" " Make sure quote markers in regions (header / signature) have correct color syn match mailQuoteExp1 contained "\v^(\> ?)" syn match mailQuoteExp2 contained "\v^(\> ?){2}" syn match mailQuoteExp3 contained "\v^(\> ?){3}" syn match mailQuoteExp4 contained "\v^(\> ?){4}" syn match mailQuoteExp5 contained "\v^(\> ?){5}" syn match mailQuoteExp6 contained "\v^(\> ?){6}" " Even and odd quoted lines. order is imporant here! syn match mailQuoted1 contains=mailHeader,@mailLinks,mailSignature,@NoSpell "^\([a-z]\+>\|[]|}>]\).*$" syn match mailQuoted2 contains=mailHeader,@mailLinks,mailSignature,@NoSpell "^\(\([a-z]\+>\|[]|}>]\)[ \t]*\)\{2}.*$" syn match mailQuoted3 contains=mailHeader,@mailLinks,mailSignature,@NoSpell "^\(\([a-z]\+>\|[]|}>]\)[ \t]*\)\{3}.*$" syn match mailQuoted4 contains=mailHeader,@mailLinks,mailSignature,@NoSpell "^\(\([a-z]\+>\|[]|}>]\)[ \t]*\)\{4}.*$" syn match mailQuoted5 contains=mailHeader,@mailLinks,mailSignature,@NoSpell "^\(\([a-z]\+>\|[]|}>]\)[ \t]*\)\{5}.*$" syn match mailQuoted6 contains=mailHeader,@mailLinks,mailSignature,@NoSpell "^\(\([a-z]\+>\|[]|}>]\)[ \t]*\)\{6}.*$" " Need to sync on the header. Assume we can do that within 100 lines if exists("mail_minlines") exec "syn sync minlines=" . mail_minlines else syn sync minlines=100 endif " Define the default highlighting. hi def link mailHeader Statement hi def link mailHeaderKey Type hi def link mailSignature PreProc hi def link mailHeaderEmail mailEmail hi def link mailEmail Special hi def link mailURL String hi def link mailSubject LineNR hi def link mailQuoted1 Comment hi def link mailQuoted3 mailQuoted1 hi def link mailQuoted5 mailQuoted1 hi def link mailQuoted2 Identifier hi def link mailQuoted4 mailQuoted2 hi def link mailQuoted6 mailQuoted2 hi def link mailQuoteExp1 mailQuoted1 hi def link mailQuoteExp2 mailQuoted2 hi def link mailQuoteExp3 mailQuoted3 hi def link mailQuoteExp4 mailQuoted4 hi def link mailQuoteExp5 mailQuoted5 hi def link mailQuoteExp6 mailQuoted6 let b:current_syntax = "mail"
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