Function sanitizeReferenceQuery

git/ref.go:243–276

sanitizeReferenceQuery removes characters that aren't allowd in a branch name. TODO: should we error out instead of ignore bad chars?

(query string)

// sanitizeReferenceQuery removes characters that aren't allowd in a branch name.
// TODO: should we error out instead of ignore bad chars?
func sanitizeReferenceQuery(query string) (string, bool, bool) {
	if query == "" {
		return "", false, false
	}

	// get special characters before anything else
	matchPrefix := query[0] == '^' // will be removed by mapping
	matchSuffix := query[len(query)-1] == '$'
	if matchSuffix {
		// Special char $ has to be removed manually as it's a valid char
		// TODO: this restricts the query language to a certain degree, can we do better? (escaping)
		query = query[:len(query)-1]
	}

	// strip all unwanted characters
	return strings.Map(func(r rune) rune {
			// See https://git-scm.com/docs/git-check-ref-format#_description for more details.
			switch {
			// rule 4.
			case r < 32 || r == 127 || r == ' ' || r == '~' || r == '^' || r == ':':
				return -1

			// rule 5
			case r == '?' || r == '*' || r == '[':
				return -1

			// everything else we map as is
			default:
				return r
			}
		}, query),
		matchPrefix,
		matchSuffix
}