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Do not highlight rule components as propane keywords

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This commit is contained in:
Josh Holtrop 2026-07-05 20:52:59 -04:00
parent 453be990b6
commit b04c0ad205
1 changed files with 8 additions and 1 deletions
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9
extra/vim/syntax/propane.vim
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@ -20,10 +20,16 @@ exe "syn include @propaneTarget syntax/".b:propane_subtype.".vim"
syn region propaneTarget matchgroup=propaneDelimiter start="<<" end=">>$" contains=@propaneTarget keepend
syn match propaneComment "#.*"
syn match propaneOperator "->"
syn match propaneFieldAlias ":[a-zA-Z0-9_]\+" contains=propaneFieldOperator
syn match propaneFieldOperator ":" contained
syn match propaneOperator "?"
" The right-hand side of a rule (after '->' up to '<<' or ';') lists symbol
" names that may coincide with propane keywords (e.g. 'start', 'token',
" 'tree'). Wrap it in a region that excludes keyword matches so those names
" are not highlighted as keywords. The '<<' is left unconsumed so the
" propaneTarget region can still match it.
syn region propaneRuleRhs matchgroup=propaneOperator start="->" end="\ze<<" end=";" contains=propaneFieldAlias,propaneRuleOperator,propaneComment keepend
syn match propaneRuleOperator "?" contained
" Keywords that introduce a user-defined name. The name is consumed by
" propaneName via nextgroup so a name matching a keyword (e.g. 'token start')
" is not highlighted as a keyword. These must be a match (not syn keyword)
@ -39,6 +45,7 @@ hi def link propaneKeyword Keyword
hi def link propaneNameDecl Keyword
hi def link propaneRegex String
hi def link propaneOperator Operator
hi def link propaneRuleOperator Operator
hi def link propaneFieldOperator Operator
hi def link propaneDelimiter Delimiter
hi def link propaneFieldAlias Identifier