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Fix README TOC links (#22577) (#22677)

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Backport #22577 

Fixes anchored markup links by adding `user-content-` (which is
prepended to IDs)

Closes https://codeberg.org/Codeberg/Community/issues/894
This commit is contained in:
crystal 2023-01-31 02:23:19 -07:00 committed by GitHub
parent fd2c250b52
commit 6dc16c1154
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 9 additions and 2 deletions
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11
modules/markup/html.go
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@ -358,12 +358,19 @@ func postProcess(ctx *RenderContext, procs []processor, input io.Reader, output
}
func visitNode(ctx *RenderContext, procs, textProcs []processor, node *html.Node) {
// Add user-content- to IDs if they don't already have them
// Add user-content- to IDs and "#" links if they don't already have them
for idx, attr := range node.Attr {
if attr.Key == "id" && !(strings.HasPrefix(attr.Val, "user-content-") || blackfridayExtRegex.MatchString(attr.Val)) {
val := strings.TrimPrefix(attr.Val, "#")
notHasPrefix := !(strings.HasPrefix(val, "user-content-") || blackfridayExtRegex.MatchString(val))
if attr.Key == "id" && notHasPrefix {
node.Attr[idx].Val = "user-content-" + attr.Val
}
if attr.Key == "href" && strings.HasPrefix(attr.Val, "#") && notHasPrefix {
node.Attr[idx].Val = "#user-content-" + val
}
if attr.Key == "class" && attr.Val == "emoji" {
textProcs = nil
}