NULL_DEVICE       120 gtags-cscope/edit.c 		(void) execute(editor, editor, plusnum, file, NULL_DEVICE, NULL);
NULL_DEVICE       411 gtags-cscope/gtags-cscope.c 	snprintf(com, sizeof(com), "%s -p >" NULL_DEVICE, global_command);
NULL_DEVICE       508 gtags/gtags.c  			strbuf_puts(sb, " >" NULL_DEVICE);
NULL_DEVICE        92 htags/htags.c  const char *null_device = NULL_DEVICE;