===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/Attic/cmd-string.c,v
retrieving revision 1.30
retrieving revision 1.31
diff -u -r1.30 -r1.31
--- src/usr.bin/tmux/Attic/cmd-string.c	2018/08/19 19:03:46	1.30
+++ src/usr.bin/tmux/Attic/cmd-string.c	2019/04/26 11:38:51	1.31
@@ -1,4 +1,4 @@
-/* $OpenBSD: cmd-string.c,v 1.30 2018/08/19 19:03:46 nicm Exp $ */
+/* $OpenBSD: cmd-string.c,v 1.31 2019/04/26 11:38:51 nicm Exp $ */
 
 /*
  * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -174,7 +174,10 @@
 	int		  argc;
 	char		**argv;
 
-	*cause = NULL;
+	if (cause != NULL)
+		*cause = NULL;
+	log_debug ("%s: %s", __func__, s);
+
 	if (cmd_string_split(s, &argc, &argv) != 0) {
 		xasprintf(cause, "invalid or unknown command: %s", s);
 		return (NULL);