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" Vim syntax file
" Language: sendmail
" Maintainer: Charles E. Campbell <NcampObell@SdrPchip.AorgM-NOSPAM>
" Last Change: Oct 25, 2016
" Version: 9
" URL: http://www.drchip.org/astronaut/vim/index.html#SYNTAX_SM
if exists("b:current_syntax")
finish
endif
" Comments
syn match smComment "^#.*$" contains=@Spell
" Definitions, Classes, Files, Options, Precedence, Trusted Users, Mailers
syn match smDefine "^[CDF]."
syn match smDefine "^O[AaBcdDeFfgHiLmNoQqrSsTtuvxXyYzZ]"
syn match smDefine "^O\s"he=e-1
syn match smDefine "^M[a-zA-Z0-9]\+,"he=e-1
syn match smDefine "^T" nextgroup=smTrusted
syn match smDefine "^P" nextgroup=smMesg
syn match smTrusted "\S\+$" contained
syn match smMesg "\S*="he=e-1 contained nextgroup=smPrecedence
syn match smPrecedence "-\=[0-9]\+" contained
" Header Format H?list-of-mailer-flags?name: format
syn match smHeaderSep contained "[?:]"
syn match smHeader "^H\(?[a-zA-Z]\+?\)\=[-a-zA-Z_]\+:" contains=smHeaderSep
" Variables
syn match smVar "\$[a-z\.\|]"
" Rulesets
syn match smRuleset "^S\d*"
" Rewriting Rules
syn match smRewrite "^R" skipwhite nextgroup=smRewriteLhsToken,smRewriteLhsUser
syn match smRewriteLhsUser contained "[^\t$]\+" skipwhite nextgroup=smRewriteLhsToken,smRewriteLhsSep
syn match smRewriteLhsToken contained "\(\$[-*+]\|\$[-=][A-Za-z]\|\$Y\)\+" skipwhite nextgroup=smRewriteLhsUser,smRewriteLhsSep
syn match smRewriteLhsSep contained "\t\+" skipwhite nextgroup=smRewriteRhsToken,smRewriteRhsUser
syn match smRewriteRhsUser contained "[^\t$]\+" skipwhite nextgroup=smRewriteRhsToken,smRewriteRhsSep
syn match smRewriteRhsToken contained "\(\$\d\|\$>\d\|\$#\|\$@\|\$:[-_a-zA-Z]\+\|\$[[\]]\|\$@\|\$:\|\$[A-Za-z]\)\+" skipwhite nextgroup=smRewriteRhsUser,smRewriteRhsSep
syn match smRewriteRhsSep contained "\t\+" skipwhite nextgroup=smRewriteComment,smRewriteRhsSep
syn match smRewriteRhsSep contained "$"
syn match smRewriteComment contained "[^\t$]*$"
" Clauses
syn match smClauseError "\$\."
syn match smElse contained "\$|"
syn match smClauseCont contained "^\t"
syn region smClause matchgroup=Delimiter start="\$?." matchgroup=Delimiter end="\$\." contains=smElse,smClause,smVar,smClauseCont
" Define the default highlighting.
" Only when an item doesn't have highlighting yet
hi def link smClause Special
hi def link smClauseError Error
hi def link smComment Comment
hi def link smDefine Statement
hi def link smElse Delimiter
hi def link smHeader Statement
hi def link smHeaderSep String
hi def link smMesg Special
hi def link smPrecedence Number
hi def link smRewrite Statement
hi def link smRewriteComment Comment
hi def link smRewriteLhsToken String
hi def link smRewriteLhsUser Statement
hi def link smRewriteRhsToken String
hi def link smRuleset Preproc
hi def link smTrusted Special
hi def link smVar String
let b:current_syntax = "sm"
" vim: ts=18
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