A further fix for locally remapped fringe face

* src/xdisp.c (expose_window): Temporarily switch to the
window's buffer, in case the fringe face was remapped locally
in that buffer.  (Bug#33244)

1 files changed, 15 insertions, 0 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 7b0ca477220..fa7691cdd0f 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -32252,6 +32252,18 @@ expose_window (struct window *w, XRectangle *fr)
          y0 or y1 is negative (can happen for tall images).  */
       int r_bottom = r.y + r.height;
 
+      /* We must temporarily switch to the window's buffer, in case
+         the fringe face has been remapped in that buffer's
+         face-remapping-alist, so that draw_row_fringe_bitmaps,
+         called from expose_line, will use the right face.  */
+      bool buffer_changed = false;
+      struct buffer *oldbuf = current_buffer;
+      if (!w->pseudo_window_p)
+        {
+          set_buffer_internal_1 (XBUFFER (w->contents));
+          buffer_changed = true;
+        }
+
       /* Update lines intersecting rectangle R.  */
       first_overlapping_row = last_overlapping_row = NULL;
       for (row = w->current_matrix->rows;
@@ -32297,6 +32309,9 @@ expose_window (struct window *w, XRectangle *fr)
             break;
         }
 
+      if (buffer_changed)
+        set_buffer_internal_1 (oldbuf);
+
       /* Display the mode line if there is one.  */
       if (window_wants_mode_line (w)
           && (row = MATRIX_MODE_LINE_ROW (w->current_matrix),