Merge branch 'master' of ssh://git.code.sf.net/p/tmux/tmux-code

1 files changed, 2 insertions, 2 deletions

diff --git a/session.c b/session.c
index 66a52bc6..07307710 100644
--- a/session.c
+++ b/session.c
@@ -174,11 +174,11 @@ session_destroy(struct session *s)
 	RB_INSERT(sessions, &dead_sessions, s);
 }
 
-/* Check a session name is valid: not empty and no colons. */
+/* Check a session name is valid: not empty and no colons or periods. */
 int
 session_check_name(const char *name)
 {
-	return (*name != '\0' && strchr(name, ':') == NULL);
+	return (*name != '\0' && name[strcspn(name, ":.")] == '\0');
 }
 
 /* Update session active time. */