57     char_u	*din_fname;  // used for external diff  member
709     if (din->din_fname == NULL)  in clear_diffin()
715 	mch_remove(din->din_fname);  in clear_diffin()
804     if (din->din_fname == NULL)  in diff_write()
814     r = buf_write(buf, din->din_fname, NULL,  in diff_write()
842 	dio->dio_orig.din_fname = vim_tempname('o', TRUE);  in diff_try_update()
843 	dio->dio_new.din_fname = vim_tempname('n', TRUE);  in diff_try_update()
845 	if (dio->dio_orig.din_fname == NULL  in diff_try_update()
846 		|| dio->dio_new.din_fname == NULL  in diff_try_update()
891     vim_free(dio->dio_orig.din_fname);  in diff_try_update()
892     vim_free(dio->dio_new.din_fname);  in diff_try_update()
1006 	fd = mch_fopen((char *)diffio->dio_orig.din_fname, "w");  in check_external_diff()
1014 	    fd = mch_fopen((char *)diffio->dio_new.din_fname, "w");  in check_external_diff()
1044 		mch_remove(diffio->dio_new.din_fname);  in check_external_diff()
1046 	    mch_remove(diffio->dio_orig.din_fname);  in check_external_diff()
1141     char_u	*tmp_orig = dio->dio_orig.din_fname;  in diff_file()
1142     char_u	*tmp_new = dio->dio_new.din_fname;  in diff_file()