(scan_c_file): Warn about missing `usage' info.

lib-src/ChangeLog

+2002-07-15  Stefan Monnier  <monnier@cs.yale.edu>
+
+	* make-docfile.c (scan_c_file): Warn about missing `usage' info.
+
 2002-07-05  Jonathan Kamens <jik@kamens.brookline.ma.us>
 
 	* b2m.pl: Obey the rmail file and use the unpruned header

lib-src/make-docfile.c

@@ -722,6 +722,9 @@ scan_c_file (filename, mode)
 	      fprintf (outfile, "\n\n");
 	      write_c_args (outfile, buf, argbuf, minargs, maxargs);
 	    }
+	  else if (defunflag && maxargs == -1 && !saw_usage)
+	    /* The DOC should provide the usage form.  */
+	    fprintf (stderr, "Missing `usage' for function `%s'.\n", buf);
 	}
     }
  eof: