%s means print an argument as a string, %d means print as number in decimal,\n\
%c means print a number as a single character.\n\
The argument used by %s must be a string or a symbol;\n\
-the argument used by %d or %c must be a number.")
+the argument used by %d or %c must be a number.\n\
+If the first argument is nil, clear any existing message; let the\n\
+minibuffer contents show.")
(nargs, args)
int nargs;
Lisp_Object *args;
{
- register Lisp_Object val;
-
- val = Fformat (nargs, args);
- message ("%s", XSTRING (val)->data);
- return val;
+ if (NILP (args[0]))
+ message (0);
+ else
+ {
+ register Lisp_Object val;
+ val = Fformat (nargs, args);
+ message ("%s", XSTRING (val)->data);
+ return val;
+ }
}
DEFUN ("format", Fformat, Sformat, 1, MANY, 0,