Add more nonofficial whitespace characters

string_utils/string_utils.go

@@ -62,7 +62,9 @@ var NonOfficialWhitespaceChars = []string{
 	"\u200C", // Zero width non-joiner
 	"\u200D", // Zero width joiner
 	"\u2060", // Word joiner
+	"\u202C", // Pop directional formatting
 	"\uFEFF", // Zero width no-break space
+	"\u00AD", // Soft hyphen
 }
 
 var snakeCaseRegex = regexp.MustCompile("^" + snakeCasePattern + "$")