Fix vertical cursor motion across too wide images

* src/indent.c (Fvertical_motion): If lines are truncated and we
end up beyond the right margin of the window, don't assume we are
in the next screen line, unless VPOS actually says so.  (Bug#28071)

1 files changed, 2 insertions, 2 deletions

diff --git a/src/indent.c b/src/indent.c
index 4c6dacd2042..d76ac028d5b 100644
--- a/src/indent.c
+++ b/src/indent.c
@@ -2229,10 +2229,10 @@ whether or not it is currently displayed in some window.  */)
                  screen lines we need to backtrack.  */
               it_overshoot_count = it.vpos;
             }
-          /* We will overshoot if lines are truncated and point lies
+          /* We might overshoot if lines are truncated and point lies
              beyond the right margin of the window.  */
           if (it.line_wrap == TRUNCATE && it.current_x >= it.last_visible_x
-              && it_overshoot_count == 0)
+              && it_overshoot_count == 0 && it.vpos > 0)
             it_overshoot_count = 1;
           if (it_overshoot_count > 0)
             move_it_by_lines (&it, -it_overshoot_count);