A literal `<span style="color:…">` in prose (the sample wiki's own colorize
instructions used one, with a `…` ellipsis as the colour) was matched by the
scanner and fed to `highlight guifg=…`, which raised E254 on the un-silenced
guifg line. That aborted the whole nuwiki#colors#refresh(), so on the Vim
clients NO spans got concealed (start-vim) and follow-link crashed mid
FileType autocmd (start-vim-coc). Neovim happened to dodge it depending on
which buffer was scanned.
s:define() now:
- validates the colour (only #hex or an alphabetic name) and skips anything
else — rgb()/hsl() functions and prose examples no longer create bogus
conceal regions or errors;
- runs both `highlight` calls under `silent!`, so a valid-format but unknown
name can't abort the refresh either (tags still conceal, text just isn't
recoloured).
Also reworded the sample wiki's colorize note so it no longer embeds a
literal span tag.
Test: colorize.skips_unallocatable_colour (vim) — an rgb() span before a real
one: refresh doesn't error, the rgb span isn't concealed, the real span still
is. nvim 269, vim 260+18, all green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
A :VimwikiColorize'd word showed the literal
`<span style="color:NAME">TEXT</span>` markup. Now the tags are concealed
and TEXT is painted in NAME, so the buffer shows just the coloured word —
matching the HTML export.
New autoload/nuwiki/colors.vim: nuwiki#colors#refresh() scans the buffer
and, per distinct colour, defines a syntax region that conceals the
`<span …>` / `</span>` tags (concealends) and highlights the body with the
span's actual colour (guifg always; ctermfg for named colours). Idempotent
(clears the group before redefining) and tracked in b:nuwiki_color_seen.
Refresh is driven from three places so it's both correct and immediate:
- syntax/vimwiki.vim: initial pass + re-establish after :colorscheme reload
(resets the per-buffer cache since :syntax clear drops the regions);
- ftplugin TextChanged/InsertLeave autocmd for spans that arrive via paste/
undo/external edits;
- colorize() itself calls refresh() right after wrapping, so a freshly
colorized word conceals instantly (TextChanged doesn't fire reliably mid
command / in headless ex-mode).
The LSP @vimwikiColor token no longer links to Constant, so in Neovim it
doesn't override the real per-span colour on the concealed text. Pure syntax
+ :highlight — works identically in Vim, coc.nvim, and Neovim, no LSP needed.
Tests: colorize.conceal_hides_tags_shows_text (both harnesses) and
colorize.command_conceals_immediately (vim). Sample wiki's colorize section
notes the conceal. nvim 269, vim 259+18, config-parity green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
gffranco