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" Vim syntax file
" Language: Debian preseed
" Maintainer: cos <cos>, https://www.netizen.se/#contact
" Last Change: 2023 Oct 13
" Remark: https://wiki.debian.org/DebianInstaller/Preseed
" quit when a syntax file was already loaded
if exists('b:current_syntax')
finish
endif
" The syntax of each line in a preseed file follows:
" <owner> <question name> <question type> <value>
" Create clusters for two of these four parts of a preseed line.
syntax cluster preseedSecond contains=preseedQuestion,preseedOwnerLC
syntax cluster preseedThird contains=preseedBooleanType,
\ preseedStrLikeType,
\ preseedMultiSelType,
\ preseedNote,
\ preseedSelectType,
\ preseedQuestionLC
" Define the highlighting. Doesn't map perfectly to the group's intents, but
" arguably close enough?
" First, <owner>
hi! def link preseedOwner Label
" Second, <question name>
hi! def link preseedQuestion Identifier
" Third, <question type>
hi! def link preseedBooleanType Type
hi! def link preseedMultiSelType Type
hi! def link preseedNote Type
hi! def link preseedSelectType Type
hi! def link preseedStrLikeType Type
" Fourth, <value>
hi! def link preseedBooleanVal Special
hi! def link preseedMultiSelVal Special
hi! def link preseedStrLikeVal String
hi! def link preseedVal String
hi! def link preseedSelectVal Special
hi! def link preseedMultiSelSep Operator
hi! def link preseedComment Comment
" Line Continuation
hi! def link preseedOwnerLC Operator
hi! def link preseedQuestionLC Operator
hi! def link preseedBooleanLC Operator
hi! def link preseedMultiSelLC Operator
hi! def link preseedStrLikeLC Operator
" Add the syntax matching rules.
" First, <owner>
sy match preseedOwner /^\s*[[:alnum:]_-]\+\(\s\|$\)/
\ nextgroup=@preseedSecond,preseedOwnerLC
" Second, <question name>
sy match preseedQuestion contained
\ "\s*\([[:alnum:]_-]\+/\)\+[[:alnum:]_-]\+\(\s\|$\)"
\ nextgroup=@preseedThird,preseedQuestionLC
" Third, <question type>
" (boolean, multiselect, note, password, select, string)
sy match preseedBooleanType contained /\s*boolean\(\s\|$\)/
\ nextgroup=preseedBooleanVal,preseedBooleanLC
sy match preseedMultiSelType contained /\s*multiselect\(\s\|$\)/
\ nextgroup=preseedMultiSelVal,preseedMultiSelLC
sy match preseedNote contained /\s*note$/
sy match preseedSelectType contained /\s*select\(\s\|$\)/
\ nextgroup=preseedSelectVal,preseedSelectLC
sy match preseedStrLikeType contained /\s*\(password\|string\)\(\s\|$\)/
\ nextgroup=preseedStrLikeVal,preseedStrLikeLC
" Fourth, <value>
sy match preseedBooleanVal contained /\s*\(false\|true\)/
sy match preseedMultiSelVal contained /.*/me=e
\ contains=preseedMultiSelSep
sy match preseedMultiSelVal contained /.*\\/me=e-1
\ contains=preseedMultiSelSep nextgroup=preseedMultiSelLC
sy match preseedMultiSelSep contained /,/
sy match preseedSelectVal contained /.*/
sy match preseedStrLikeVal contained /.*/me=e
sy match preseedStrLikeVal contained /.*\\/me=e-1
\ nextgroup=preseedStrLikeLC
" Line continuation needs to be down here override everything other syntax.
sy match preseedBooleanLC contained /\s*\\$/
\ nextgroup=preseedBooleanVal,preseedBooleanLC skipnl
sy match preseedMultiSelLC contained /\\$/ nextgroup=preseedMultiSelVal skipnl
sy match preseedOwnerLC contained /\s*\\$/ nextgroup=@preseedSecond skipnl
sy match preseedQuestionLC contained /\s*\\$/ nextgroup=@preseedThird skipnl
sy match preseedSelectLC contained /\s*\\$/
\ nextgroup=preseedSelectVal,preseedSelectLC skipnl
sy match preseedStrLikeLC contained /\\$/ nextgroup=preseedStrLikeVal skipnl
" And comments must override everything else.
sy match preseedComment /^\s*#.*/
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