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Highlight the line number targeted by the URL anchor

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This currently works only when `html.WithClasses(true)` is used.
The same colors as for the pre-highlighted lines are used.
Only the line number is highlighted, so difficult to notice, but
better than nothing.
This commit is contained in:
Alexandru Băluț
2019-12-18 16:57:09 +01:00
committed by Alec Thomas
parent 110f671e7c
commit 19d5ee688c
1 changed files with 7 additions and 0 deletions
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7
formatters/html/html.go
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@ -345,6 +345,13 @@ func (f *Formatter) WriteCSS(w io.Writer, style *chroma.Style) error {
return err
}
}
// Special-case line number highlighting when targeted.
if f.lineNumbers || f.lineNumbersInTable {
targetedLineCSS := StyleEntryToCSS(style.Get(chroma.LineHighlight))
for _, tt := range []chroma.TokenType{chroma.LineNumbers, chroma.LineNumbersTable} {
fmt.Fprintf(w, "/* %s targeted by URL anchor */ .%schroma .%s:target { %s }\n", tt, f.prefix, f.class(tt), targetedLineCSS)
}
}
tts := []int{}
for tt := range css {
tts = append(tts, int(tt))