U8_IS_LEAD        844 ext/intl/grapheme/grapheme_string.c 	if ( !UTF8_IS_SINGLE(*pstr) && !U8_IS_LEAD(*pstr) ) {
U8_IS_LEAD        847 ext/intl/grapheme/grapheme_string.c 		while ( !UTF8_IS_SINGLE(*pstr) && !U8_IS_LEAD(*pstr) ) {