Yet another fix for when point ends up in invisible text

* src/xdisp.c (redisplay_window): When someone forced
window-start, and honoring that failed to show the cursor, try
moving out of invisible text, before falling back to the middle of
the window.  (Bug#22098)

1 files changed, 27 insertions, 3 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 68e9cfb450c..37dc6047e58 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -16301,9 +16301,33 @@ redisplay_window (Lisp_Object window, bool just_this_one_p)
       if (w->cursor.vpos < 0)
         {
           /* If point does not appear, try to move point so it does
-             appear. The desired matrix has been built above, so we
-             can use it here.  */
-          new_vpos = window_box_height (w) / 2;
+             appear.  The desired matrix has been built above, so we
+             can use it here.  First see if point is in invisible
+             text, and if so, move it to the first visible buffer
+             position past that.  */
+          struct glyph_row *r = NULL;
+          Lisp_Object invprop =
+            get_char_property_and_overlay (make_number (PT), Qinvisible,
+                                           Qnil, NULL);
+
+          if (TEXT_PROP_MEANS_INVISIBLE (invprop) != 0)
+            {
+              ptrdiff_t alt_pt;
+              Lisp_Object invprop_end =
+                Fnext_single_char_property_change (make_number (PT), Qinvisible,
+                                                   Qnil, Qnil);
+
+              if (NATNUMP (invprop_end))
+                alt_pt = XFASTINT (invprop_end);
+              else
+                alt_pt = ZV;
+              r = row_containing_pos (w, alt_pt, w->desired_matrix->rows,
+                                      NULL, 0);
+            }
+          if (r)
+            new_vpos = MATRIX_ROW_BOTTOM_Y (r);
+          else  /* Give up and just move to the middle of the window.  */
+            new_vpos = window_box_height (w) / 2;
         }
 
       if (!cursor_row_fully_visible_p (w, false, false))