From 229be034fb561ae32405f33797fc5a2b7f0c1b0c Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Thu, 20 Feb 2020 07:34:57 +0000
Subject: [PATCH] Add selection_active format for when the selection is present
 but not moving with the cursor, from Mark Kelly.

---
 tmux.1        | 1 +
 window-copy.c | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/tmux.1 b/tmux.1
index 8586407b..c36ad1c5 100644
--- a/tmux.1
+++ b/tmux.1
@@ -4350,6 +4350,7 @@ The following variables are available, where appropriate:
 .It Li "scroll_position" Ta "" Ta "Scroll position in copy mode"
 .It Li "scroll_region_lower" Ta "" Ta "Bottom of scroll region in pane"
 .It Li "scroll_region_upper" Ta "" Ta "Top of scroll region in pane"
+.It Li "selection_active" Ta "" Ta "1 if selection started and changes with the cursor in copy mode"
 .It Li "selection_end_x" Ta "" Ta "X position of the end of the selection"
 .It Li "selection_end_y" Ta "" Ta "Y position of the end of the selection"
 .It Li "selection_present" Ta "" Ta "1 if selection started in copy mode"
diff --git a/window-copy.c b/window-copy.c
index a717884c..301fc16e 100644
--- a/window-copy.c
+++ b/window-copy.c
@@ -590,7 +590,10 @@ window_copy_formats(struct window_mode_entry *wme, struct format_tree *ft)
 		format_add(ft, "selection_start_y", "%d", data->sely);
 		format_add(ft, "selection_end_x", "%d", data->endselx);
 		format_add(ft, "selection_end_y", "%d", data->endsely);
-	}
+		format_add(ft, "selection_active", "%d",
+		    data->cursordrag != CURSORDRAG_NONE);
+	} else
+		format_add(ft, "selection_active", "%d", 0);
 
 	s = format_grid_word(data->screen.grid, data->cx, data->cy);
 	if (s != NULL) {