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fix(syntax): per-level heading groups so colorschemes differentiate H1-H6

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The single `nuwikiHeading` group linked all six levels to `Title`.
Many popular colorschemes (codedark, gruvbox-light, etc.) define
`Title` as bold-only with no foreground colour, so every heading
rendered as bold text in the Normal colour — H1 and H3 were
visually identical.

Split into nuwikiHeading1..6 and link each to a different accent
(Title / Function / Identifier / Type / Constant / PreProc), matching
the per-level Tree-sitter mapping the Neovim semantic-token side
already uses. The patterns are mutually exclusive: each requires
whitespace immediately after the equals run, so `=` won't match `==`.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Gabriel Fróes Franco
2026-05-26 22:03:51 -03:00
parent cf48242542
commit 04cbe67882
1 changed files with 19 additions and 2 deletions
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syntax/vimwiki.vim
+19 -2
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@@ -63,7 +63,15 @@ endif
syntax case match
syntax match nuwikiHeading /^\s*=\{1,6}\s.\{-}\s=\{1,6}\s*$/
" One match per heading level so colorschemes can style each differently.
" Each pattern requires whitespace immediately after the equals run, which
" makes the levels mutually exclusive (`==` won't match `===`).
syntax match nuwikiHeading1 /^\s*=\s.\{-}\s=\s*$/
syntax match nuwikiHeading2 /^\s*==\s.\{-}\s==\s*$/
syntax match nuwikiHeading3 /^\s*===\s.\{-}\s===\s*$/
syntax match nuwikiHeading4 /^\s*====\s.\{-}\s====\s*$/
syntax match nuwikiHeading5 /^\s*=====\s.\{-}\s=====\s*$/
syntax match nuwikiHeading6 /^\s*======\s.\{-}\s======\s*$/
syntax match nuwikiHorizontal /^-\{4,}\s*$/
syntax match nuwikiCommentLine /^%%.*$/
syntax region nuwikiCommentBlock start=/^%%+/ end=/+%%/ keepend
@@ -92,7 +100,16 @@ syntax match nuwikiWikilinkTarget /[^|\]]*|/ contained conceal
syntax region nuwikiTransclusion start=/{{[^{]/ end=/}}/ keepend
syntax match nuwikiUrl /\<\(https\?\|ftp\|mailto\|file\):\/\?\/\?\S\+/
highlight default link nuwikiHeading Title
" Heading levels map to progressively softer accents — matches the Neovim
" semantic-token mapping above so static fallback and LSP-driven highlights
" agree. Colorschemes that don't differentiate Title vs Function vs etc.
" will still show all six as the same colour, but most do.
highlight default link nuwikiHeading1 Title
highlight default link nuwikiHeading2 Function
highlight default link nuwikiHeading3 Identifier
highlight default link nuwikiHeading4 Type
highlight default link nuwikiHeading5 Constant
highlight default link nuwikiHeading6 PreProc
highlight default link nuwikiHorizontal Comment
highlight default link nuwikiCommentLine Comment
highlight default link nuwikiCommentBlock Comment