annotate runtime/syntax/mail.vim @ 14154:1d9aa3fd6aa3

Added tag v8.1.0094 for changeset 01b7a627d403ea7a1ea4b026ff04af6eb27c71c9
author Christian Brabandt <cb@256bit.org>
date Thu, 21 Jun 2018 21:45:06 +0200
parents 22da5ab9aaa1
children c57f1ae55bfb
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1 " Vim syntax file
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2 " Language: Mail file
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3 " Previous Maintainer: Felix von Leitner <leitner@math.fu-berlin.de>
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4 " Maintainer: GI <a@b.c>, where a='gi1242+vim', b='gmail', c='com'
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5 " Last Change: Wed 14 Aug 2013 08:24:52 AM PDT
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6
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7 " Quit when a syntax file was already loaded
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8 if exists("b:current_syntax")
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9 finish
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10 endif
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11
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12 let s:cpo_save = &cpo
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13 set cpo&vim
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14
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15 " The mail header is recognized starting with a "keyword:" line and ending
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16 " with an empty line or other line that can't be in the header. All lines of
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17 " the header are highlighted. Headers of quoted messages (quoted with >) are
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18 " also highlighted.
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19
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20 " Syntax clusters
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21 syn cluster mailHeaderFields contains=mailHeaderKey,mailSubject,mailHeaderEmail,@mailLinks
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22 syn cluster mailLinks contains=mailURL,mailEmail
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23 syn cluster mailQuoteExps contains=mailQuoteExp1,mailQuoteExp2,mailQuoteExp3,mailQuoteExp4,mailQuoteExp5,mailQuoteExp6
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24
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25 syn case match
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26 " For "From " matching case is required. The "From " is not matched in quoted
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27 " emails
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28 " According to RFC 2822 any printable ASCII character can appear in a field
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29 " name, except ':'.
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30 syn region mailHeader contains=@mailHeaderFields,@NoSpell start="^From .*\d\d\d\d$" skip="^\s" end="\v^[!-9;-~]*([^!-~]|$)"me=s-1 fold
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31 syn match mailHeaderKey contained contains=mailEmail,@NoSpell "^From\s.*\d\d\d\d$"
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32
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33 " Nothing else depends on case.
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34 syn case ignore
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35
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36 " Headers in properly quoted (with "> " or ">") emails are matched
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37 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;-~]*([^!-~]|$)"me=s-1 end="\v^\z1@!"me=s-1 end="\v^\z1(\> ?)+"me=s-1 fold
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38
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39 " Usenet headers
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40 syn match mailHeaderKey contained contains=mailHeaderEmail,mailEmail,@NoSpell "\v(^(\> ?)*)@<=(Newsgroups|Followup-To|Message-ID|Supersedes|Control):.*$"
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43 syn region mailHeaderKey contained contains=mailHeaderEmail,mailEmail,@mailQuoteExps,@NoSpell start="\v(^(\> ?)*)@<=(to|b?cc):" skip=",$" end="$"
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44 syn match mailHeaderKey contained contains=mailHeaderEmail,mailEmail,@NoSpell "\v(^(\> ?)*)@<=(from|reply-to):.*$" fold
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45 syn match mailHeaderKey contained contains=@NoSpell "\v(^(\> ?)*)@<=date:"
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46 syn match mailSubject contained "\v^subject:.*$" fold
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47 syn match mailSubject contained contains=@NoSpell "\v(^(\> ?)+)@<=subject:.*$"
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48
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49 " Anything in the header between < and > is an email address
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50 syn match mailHeaderEmail contained contains=@NoSpell "<.\{-}>"
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51
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52 " Mail Signatures. (Begin with "-- ", end with change in quote level)
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53 syn region mailSignature keepend contains=@mailLinks,@mailQuoteExps start="^--\s$" end="^$" end="^\(> \?\)\+"me=s-1 fold
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54 syn region mailSignature keepend contains=@mailLinks,@mailQuoteExps,@NoSpell start="^\z(\(> \?\)\+\)--\s$" end="^\z1$" end="^\z1\@!"me=s-1 end="^\z1\(> \?\)\+"me=s-1 fold
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55
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56 " Treat verbatim Text special.
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57 syn region mailVerbatim contains=@NoSpell keepend start="^#v+$" end="^#v-$" fold
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58 syn region mailVerbatim contains=@mailQuoteExps,@NoSpell keepend start="^\z(\(> \?\)\+\)#v+$" end="\z1#v-$" fold
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59
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60 " URLs start with a known protocol or www,web,w3.
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61 syn match mailURL contains=@NoSpell `\v<(((https?|ftp|gopher)://|(mailto|file|news):)[^' <>"]+|(www|web|w3)[a-z0-9_-]*\.[a-z0-9._-]+\.[^' <>"]+)[a-z0-9/]`
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62 syn match mailEmail contains=@NoSpell "\v[_=a-z\./+0-9-]+\@[a-z0-9._-]+\a{2}"
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63
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64 " Make sure quote markers in regions (header / signature) have correct color
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65 syn match mailQuoteExp1 contained "\v^(\> ?)"
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66 syn match mailQuoteExp2 contained "\v^(\> ?){2}"
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67 syn match mailQuoteExp3 contained "\v^(\> ?){3}"
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68 syn match mailQuoteExp4 contained "\v^(\> ?){4}"
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69 syn match mailQuoteExp5 contained "\v^(\> ?){5}"
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70 syn match mailQuoteExp6 contained "\v^(\> ?){6}"
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71
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72 " Even and odd quoted lines. Order is important here!
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73 syn region mailQuoted6 keepend contains=mailVerbatim,mailHeader,@mailLinks,mailSignature,@NoSpell start="^\z(\(\([a-z]\+>\|[]|}>]\)[ \t]*\)\{5}\([a-z]\+>\|[]|}>]\)\)" end="^\z1\@!" fold
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74 syn region mailQuoted5 keepend contains=mailQuoted6,mailVerbatim,mailHeader,@mailLinks,mailSignature,@NoSpell start="^\z(\(\([a-z]\+>\|[]|}>]\)[ \t]*\)\{4}\([a-z]\+>\|[]|}>]\)\)" end="^\z1\@!" fold
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75 syn region mailQuoted4 keepend contains=mailQuoted5,mailQuoted6,mailVerbatim,mailHeader,@mailLinks,mailSignature,@NoSpell start="^\z(\(\([a-z]\+>\|[]|}>]\)[ \t]*\)\{3}\([a-z]\+>\|[]|}>]\)\)" end="^\z1\@!" fold
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76 syn region mailQuoted3 keepend contains=mailQuoted4,mailQuoted5,mailQuoted6,mailVerbatim,mailHeader,@mailLinks,mailSignature,@NoSpell start="^\z(\(\([a-z]\+>\|[]|}>]\)[ \t]*\)\{2}\([a-z]\+>\|[]|}>]\)\)" end="^\z1\@!" fold
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77 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
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78 syn region mailQuoted1 keepend contains=mailQuoted2,mailQuoted3,mailQuoted4,mailQuoted5,mailQuoted6,mailVerbatim,mailHeader,@mailLinks,mailSignature,@NoSpell start="^\z([a-z]\+>\|[]|}>]\)" end="^\z1\@!" fold
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79
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80 " Need to sync on the header. Assume we can do that within 100 lines
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81 if exists("mail_minlines")
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82 exec "syn sync minlines=" . mail_minlines
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83 else
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84 syn sync minlines=100
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85 endif
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86
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87 " Define the default highlighting.
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88 hi def link mailVerbatim Special
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89 hi def link mailHeader Statement
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90 hi def link mailHeaderKey Type
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91 hi def link mailSignature PreProc
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92 hi def link mailHeaderEmail mailEmail
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93 hi def link mailEmail Special
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94 hi def link mailURL String
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95 hi def link mailSubject Title
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96 hi def link mailQuoted1 Comment
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97 hi def link mailQuoted3 mailQuoted1
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98 hi def link mailQuoted5 mailQuoted1
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99 hi def link mailQuoted2 Identifier
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100 hi def link mailQuoted4 mailQuoted2
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101 hi def link mailQuoted6 mailQuoted2
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102 hi def link mailQuoteExp1 mailQuoted1
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103 hi def link mailQuoteExp2 mailQuoted2
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104 hi def link mailQuoteExp3 mailQuoted3
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105 hi def link mailQuoteExp4 mailQuoted4
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106 hi def link mailQuoteExp5 mailQuoted5
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107 hi def link mailQuoteExp6 mailQuoted6
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108
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109 let b:current_syntax = "mail"
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111 let &cpo = s:cpo_save
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112 unlet s:cpo_save