bitset_merge     3451 compat/regex/regexec.c       bitset_merge (acceptable, dests_ch[i]);
bitset_merge     3575 compat/regex/regexec.c 	  bitset_merge (accepts, node->opr.sbcset);
bitset_merge     3581 compat/regex/regexec.c 	    bitset_merge (accepts, dfa->sb_char);