Fix cursor motion under truncate-lines with Flymake fringe indicator

* src/indent.c (Fvertical_motion): Don't consider fringe bitmaps
as "images" for the purpose of vertical-motion logic dealing with
overshooting buffer positions.  (Bug#54946)

1 files changed, 4 insertions, 1 deletions

diff --git a/src/indent.c b/src/indent.c
index 9f1a448a73a..f5a2a078b98 100644
--- a/src/indent.c
+++ b/src/indent.c
@@ -2197,7 +2197,10 @@ whether or not it is currently displayed in some window.  */)
         }
       else
         it_overshoot_count =
-          !(it.method == GET_FROM_IMAGE || it.method == GET_FROM_STRETCH);
+          /* If image_id is negative, it's a fringe bitmap, which by
+             definition doesn't affect display in the text area.  */
+          !((it.method == GET_FROM_IMAGE && it.image_id >= 0)
+            || it.method == GET_FROM_STRETCH);
 
       if (start_x_given)
         {