(note_mouse_highlight): Add help echo for dragging vertical line.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 038ce5b03b9..075e05b0e13 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -22358,7 +22358,10 @@ note_mouse_highlight (f, x, y)
     }
 
   if (part == ON_VERTICAL_BORDER)
-    cursor = FRAME_X_OUTPUT (f)->horizontal_drag_cursor;
+    {
+      cursor = FRAME_X_OUTPUT (f)->horizontal_drag_cursor;
+      help_echo_string = make_string ("drag-mouse-1: resize", 20);
+    }
   else if (part == ON_LEFT_FRINGE || part == ON_RIGHT_FRINGE
            || part == ON_SCROLL_BAR)
     cursor = FRAME_X_OUTPUT (f)->nontext_cursor;