Instead of passing titles through vis() which doubles backslashes, just

ignore any containing control characters or invalid UTF-8. GitHub issue 2070.

1 files changed, 7 insertions, 2 deletions

diff --git a/screen.c b/screen.c
index 9db0f609..5aa30271 100644
--- a/screen.c
+++ b/screen.c
@@ -152,11 +152,16 @@ screen_set_cursor_colour(struct screen *s, const char *colour)
 }
 
 /* Set screen title. */
-void
+int
 screen_set_title(struct screen *s, const char *title)
 {
+	char	*cp;
+
+	if (!utf8_isvalid(title))
+		return (0);
 	free(s->title);
-	utf8_stravis(&s->title, title, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
+	s->title = xstrdup(title);
+	return (1);
 }
 
 /* Set screen path. */