utf8_trail 123 ext/standard/html.c if (!utf8_trail(str[pos + 1])) { utf8_trail 135 ext/standard/html.c !utf8_trail(str[pos + 1]) || !utf8_trail(str[pos + 2])) { utf8_trail 155 ext/standard/html.c !utf8_trail(str[pos + 1]) || !utf8_trail(str[pos + 2]) || utf8_trail 156 ext/standard/html.c !utf8_trail(str[pos + 3])) {