diag              525 lib/diffseq.h        diag (xoff, xlim, yoff, ylim, find_minimal, &part, ctxt);
diag             5654 src/lread.c          AUTO_STRING_WITH_LEN (diag, diagnostic, diaglen);
diag             5658 src/lread.c    	    = code_convert_string_norecord (diag, Vlocale_coding_system, false);