Add a format to show if there are unseen changes while in a mode, from

Dan Aloni in GitHub issue 3498.

1 files changed, 1 insertions, 0 deletions

diff --git a/tmux.h b/tmux.h
index 3a389948..a422ed83 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1045,6 +1045,7 @@ struct window_pane {
 #define PANE_STATUSDRAWN 0x400
 #define PANE_EMPTY 0x800
 #define PANE_STYLECHANGED 0x1000
+#define PANE_UNSEENCHANGES 0x2000
 
 	int		 argc;
 	char	       **argv;