optimize_node_left 4947 regcomp.c      	r = optimize_node_left(NCAR(nd), &nopt, &nenv);
optimize_node_left 4962 regcomp.c      	r = optimize_node_left(NCAR(nd), &nopt, env);
optimize_node_left 5102 regcomp.c      	r = optimize_node_left(NANCHOR(node)->target, &nopt, env);
optimize_node_left 5158 regcomp.c            r = optimize_node_left(NCALL(node)->target, opt, env);
optimize_node_left 5171 regcomp.c            r = optimize_node_left(qn->target, &nopt, env);
optimize_node_left 5228 regcomp.c      	  r = optimize_node_left(en->target, opt, env);
optimize_node_left 5248 regcomp.c      	  r = optimize_node_left(en->target, opt, env);
optimize_node_left 5259 regcomp.c      	r = optimize_node_left(en->target, opt, env);
optimize_node_left 5375 regcomp.c        r = optimize_node_left(node, &opt, &env);