(Ftrace_to_stderr): Add usage to docstring.

diff --git a/src/xdisp.c b/src/xdisp.c
index d391a37f229f75030c3b7e8e02f9cdb6ebea798b..896740367f8592da5d7e53133a1168da5c90e9f9 100644 (file)
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -12471,7 +12471,8 @@ With ARG, turn tracing on if and only if ARG is positive.  */)
 
 
 DEFUN ("trace-to-stderr", Ftrace_to_stderr, Strace_to_stderr, 1, MANY, "",
-       doc: /* Like `format', but print result to stderr.  */)
+       doc: /* Like `format', but print result to stderr.
+usage: (trace-to-stderr STRING &rest OBJECTS)  */)
      (nargs, args)
      int nargs;
      Lisp_Object *args;