vim-55/src/buffer.c

81     buf_T	*old_curbuf;
120     old_curbuf = curbuf;
265 	if (buf_valid(old_curbuf) && old_curbuf->b_ml.ml_mfp != NULL)
270 	    aucmd_prepbuf(&aco, old_curbuf);
705     buf_T	*old_curbuf = curbuf;
734 	handle_swap_exists(old_curbuf);
742  * It is allowed for "old_curbuf" to be NULL or invalid.
745 handle_swap_exists(old_curbuf)
746     buf_T	*old_curbuf;
766 	if (!buf_valid(old_curbuf) || old_curbuf == curbuf)
767 	    old_curbuf = buflist_new(NULL, NULL, 1L, BLN_CURBUF | BLN_LISTED);
768 	if (old_curbuf != NULL)
769 	    enter_buffer(old_curbuf);
770 	/* If "old_curbuf" is NULL we are in big trouble here... */