vis: do not segfault when given a NULL command to process

1 files changed, 2 insertions, 0 deletions

diff --git a/vis-cmds.c b/vis-cmds.c
index 0fb31df..589595e 100644
--- a/vis-cmds.c
+++ b/vis-cmds.c
@@ -1246,6 +1246,8 @@ static const Command *lookup_cmd(Vis *vis, const char *name) {
 }
 
 bool vis_cmd(Vis *vis, const char *cmdline) {
+	if (!cmdline)
+		return true;
 	enum CmdOpt opt = CMD_OPT_NONE;
 	while (*cmdline == ':')
 		cmdline++;