BEG               830 re.c                       rm->char_offset[i].beg = BEG(i);
BEG               840 re.c                   if (BEG(i) < 0)
BEG               842 re.c                   pairs[num_pos++].byte_pos = BEG(i);
BEG               859 re.c                   if (BEG(i) < 0) {
BEG               865 re.c                   key.byte_pos = BEG(i);
BEG              1040 re.c               if (BEG(i) < 0)
BEG              1076 re.c               if (BEG(i) < 0)
BEG              1111 re.c               if (BEG(i) < 0)
BEG              1384 re.c               if (BEG(nth) == -1) return Qfalse;
BEG              1405 re.c               start = BEG(nth);
BEG              1441 re.c               if (BEG(0) == -1) return Qnil;
BEG              1442 re.c               str = rb_str_subseq(RMATCH(match)->str, 0, BEG(0));
BEG              1469 re.c               if (BEG(0) == -1) return Qnil;
BEG              1486 re.c               if (BEG(0) == -1) return Qnil;
BEG              1488 re.c               for (i=regs->num_regs-1; BEG(i) == -1 && i > 0; i--)
BEG              3223 re.c           	    rb_enc_str_buf_cat(val, RSTRING_PTR(src), BEG(0), src_enc);
BEG              3232 re.c           	    while (BEG(no) == -1 && no > 0) no--;
BEG              3247 re.c           	    if (BEG(no) == -1) continue;
BEG              3248 re.c           	    rb_enc_str_buf_cat(val, RSTRING_PTR(src)+BEG(no), END(no)-BEG(no), src_enc);
BEG              3157 string.c           start = BEG(nth);
BEG              3393 string.c       	long beg0 = BEG(0);
BEG              3548 string.c       	beg0 = BEG(0);
BEG              3555 string.c                       val = rb_hash_aref(hash, rb_str_subseq(str, BEG(0), END(0) - BEG(0)));
BEG              5401 string.c       	    if (start == end && BEG(0) == END(0)) {
BEG              5429 string.c       		if (BEG(idx) == -1) continue;
BEG              5430 string.c       		if (BEG(idx) == END(idx))
BEG              5433 string.c       		    tmp = rb_str_subseq(str, BEG(idx), END(idx)-BEG(idx));
BEG              6129 string.c       	if (BEG(0) == END(0)) {