match_backref_number 1152 re.c               return match_backref_number(match, backref);
match_backref_number 1176 re.c               int i = match_backref_number(match, n);
match_backref_number 1212 re.c               int i = match_backref_number(match, n);
match_backref_number 1247 re.c               int i = match_backref_number(match, n);
match_backref_number 3868 re.c                   n = match_backref_number(match, nth);