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Diffstat (limited to 'runtime/syntax/mail.vim')
| -rw-r--r-- | runtime/syntax/mail.vim | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/runtime/syntax/mail.vim b/runtime/syntax/mail.vim new file mode 100644 index 0000000..0cd48fc --- /dev/null +++ b/runtime/syntax/mail.vim @@ -0,0 +1,112 @@ +" Vim syntax file +" Language: Mail file +" Previous Maintainer: Felix von Leitner <leitner@math.fu-berlin.de> +" Maintainer: GI <a@b.c>, where a='gi1242+vim', b='gmail', c='com' +" Last Change: Wed 14 Aug 2013 08:24:52 AM PDT + +" Quit when a syntax file was already loaded +if exists("b:current_syntax") + finish +endif + +let s:cpo_save = &cpo +set cpo&vim + +" 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 fold +syn match mailHeaderKey contained contains=mailEmail,@NoSpell "^From\s.*\d\d\d\d$" + +" Nothing else depends on case. +syn case ignore + +" 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;-~]*([^!-~]|$)"me=s-1 end="\v^\z1@!"me=s-1 end="\v^\z1(\> ?)+"me=s-1 fold + +" Usenet headers +syn match mailHeaderKey contained contains=mailHeaderEmail,mailEmail,@NoSpell "\v(^(\> ?)*)@<=(Newsgroups|Followup-To|Message-ID|Supersedes|Control):.*$" + + +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):.*$" fold +syn match mailHeaderKey contained contains=@NoSpell "\v(^(\> ?)*)@<=date:" +syn match mailSubject contained "\v^subject:.*$" fold +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 fold +syn region mailSignature keepend contains=@mailLinks,@mailQuoteExps,@NoSpell start="^\z(\(> \?\)\+\)--\s$" end="^\z1$" end="^\z1\@!"me=s-1 end="^\z1\(> \?\)\+"me=s-1 fold + +" Treat verbatim Text special. +syn region mailVerbatim contains=@NoSpell keepend start="^#v+$" end="^#v-$" fold +syn region mailVerbatim contains=@mailQuoteExps,@NoSpell keepend start="^\z(\(> \?\)\+\)#v+$" end="\z1#v-$" fold + +" 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 important here! +syn region mailQuoted6 keepend contains=mailVerbatim,mailHeader,@mailLinks,mailSignature,@NoSpell start="^\z(\(\([a-z]\+>\|[]|}>]\)[ \t]*\)\{5}\([a-z]\+>\|[]|}>]\)\)" end="^\z1\@!" fold +syn region mailQuoted5 keepend contains=mailQuoted6,mailVerbatim,mailHeader,@mailLinks,mailSignature,@NoSpell start="^\z(\(\([a-z]\+>\|[]|}>]\)[ \t]*\)\{4}\([a-z]\+>\|[]|}>]\)\)" end="^\z1\@!" fold +syn region mailQuoted4 keepend contains=mailQuoted5,mailQuoted6,mailVerbatim,mailHeader,@mailLinks,mailSignature,@NoSpell start="^\z(\(\([a-z]\+>\|[]|}>]\)[ \t]*\)\{3}\([a-z]\+>\|[]|}>]\)\)" end="^\z1\@!" fold +syn region mailQuoted3 keepend contains=mailQuoted4,mailQuoted5,mailQuoted6,mailVerbatim,mailHeader,@mailLinks,mailSignature,@NoSpell start="^\z(\(\([a-z]\+>\|[]|}>]\)[ \t]*\)\{2}\([a-z]\+>\|[]|}>]\)\)" end="^\z1\@!" fold +syn region mailQuoted2 keepend contains=mailQuoted3,mailQuoted4,mailQuoted5,mailQuoted6,mailVerbatim,mailHeader,@mailLinks,mailSignature,@NoSpell start="^\z(\(\([a-z]\+>\|[]|}>]\)[ \t]*\)\{1}\([a-z]\+>\|[]|}>]\)\)" end="^\z1\@!" fold +syn region mailQuoted1 keepend contains=mailQuoted2,mailQuoted3,mailQuoted4,mailQuoted5,mailQuoted6,mailVerbatim,mailHeader,@mailLinks,mailSignature,@NoSpell start="^\z([a-z]\+>\|[]|}>]\)" end="^\z1\@!" fold + +" 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 mailVerbatim Special +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 Title +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" + +let &cpo = s:cpo_save +unlet s:cpo_save |