add_compile_string  513 ext/mbstring/oniguruma/regcomp.c       r = add_compile_string(prev, prev_len, slen, reg, ambig);
add_compile_string  523 ext/mbstring/oniguruma/regcomp.c   return add_compile_string(prev, prev_len, slen, reg, ambig);
add_compile_string  532 ext/mbstring/oniguruma/regcomp.c   return add_compile_string(sn->s, 1 /* sb */, sn->end - sn->s, reg, 0);