pushback         10152 ext/ripper/ripper.c # define pushback(c)               parser_pushback(parser, c)
pushback         4752 ext/ripper/ripper.y # define pushback(c)               parser_pushback(parser, c)
pushback         10084 parse.c        # define pushback(c)               parser_pushback(parser, c)
pushback         4752 parse.y        # define pushback(c)               parser_pushback(parser, c)