Be more strict about invalid UTF-8.

1 files changed, 1 insertions, 1 deletions

diff --git a/tmux.h b/tmux.h
index e69b74b1..2bc1f0a4 100644
--- a/tmux.h
+++ b/tmux.h
@@ -624,7 +624,7 @@ struct utf8_data {
 	u_char	have;
 	u_char	size;
 
-	u_char	width;
+	u_char	width;	/* 0xff if invalid */
 } __packed;
 
 /* Grid attributes. */