Don't replace underscores in auto-generated IDs in goldmark (#12805)
Fix #12196 Signed-off-by: Andrew Thornton <art27@cantab.net>
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@ -34,7 +34,7 @@ func CleanValue(value []byte) []byte {
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needsDash := false
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for _, r := range rs {
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switch {
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case unicode.IsLetter(r) || unicode.IsNumber(r):
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case unicode.IsLetter(r) || unicode.IsNumber(r) || r == '_':
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if needsDash && len(result) > 0 {
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result = append(result, '-')
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}
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