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.1 b/tmux.1
index 7c568ef6..071e3f11 100644
--- a/tmux.1
+++ b/tmux.1
@@ -5257,6 +5257,7 @@ The following variables are available, where appropriate:
 .It Li "pane_title" Ta "#T" Ta "Title of pane (can be set by application)"
 .It Li "pane_top" Ta "" Ta "Top of pane"
 .It Li "pane_tty" Ta "" Ta "Pseudo terminal of pane"
+.It Li "pane_unseen_changes" Ta "" Ta "1 if there were changes in pane while in mode"
 .It Li "pane_width" Ta "" Ta "Width of pane"
 .It Li "pid" Ta "" Ta "Server PID"
 .It Li "rectangle_toggle" Ta "" Ta "1 if rectangle selection is activated"