warning_unless_e_option 15653 ext/ripper/ripper.c 	warning_unless_e_option(parser, node, "regex literal in condition");
warning_unless_e_option 9904 ext/ripper/ripper.y 	warning_unless_e_option(parser, node, "regex literal in condition");
warning_unless_e_option 15577 parse.c        	warning_unless_e_option(parser, node, "regex literal in condition");
warning_unless_e_option 9904 parse.y        	warning_unless_e_option(parser, node, "regex literal in condition");