Fix bug #11068 with window display when default face was remapped.

 src/xdisp.c (append_space_for_newline): If the default face was
 remapped, use the remapped face for the appended newline.
 (extend_face_to_end_of_line): Use the remapped default face for
 extending the face to the end of the line.
 (display_line): Call extend_face_to_end_of_line when the default
 face was remapped.

2 files changed, 26 insertions, 7 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index e57b1af1b8b..cbf9abd0ea1 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,12 @@
+2012-03-30  Eli Zaretskii  <eliz@gnu.org>
+
+        * xdisp.c (append_space_for_newline): If the default face was
+        remapped, use the remapped face for the appended newline.
+        (extend_face_to_end_of_line): Use the remapped default face for
+        extending the face to the end of the line.
+        (display_line): Call extend_face_to_end_of_line when the default
+        face was remapped.  (Bug#11068)
+
 2012-03-29  Eli Zaretskii  <eliz@gnu.org>
 
         * s/ms-w32.h: Discourage from defining HAVE_GETCWD.
diff --git a/src/xdisp.c b/src/xdisp.c
index 97364e785cb..118480a20ae 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -18172,8 +18172,10 @@ append_space_for_newline (struct it *it, int default_face_p)
           it->c = it->char_to_display = ' ';
           it->len = 1;
 
+          /* If the default face was remapped, be sure to use the
+             remapped face for the appended newline. */
           if (default_face_p)
-            it->face_id = DEFAULT_FACE_ID;
+            it->face_id = lookup_basic_face (it->f, DEFAULT_FACE_ID);
           else if (it->face_before_selective_p)
             it->face_id = it->saved_face_id;
           face = FACE_FROM_ID (it->f, it->face_id);
@@ -18209,7 +18211,7 @@ append_space_for_newline (struct it *it, int default_face_p)
 static void
 extend_face_to_end_of_line (struct it *it)
 {
-  struct face *face;
+  struct face *face, *default_face;
   struct frame *f = it->f;
 
   /* If line is already filled, do nothing.  Non window-system frames
@@ -18223,6 +18225,9 @@ extend_face_to_end_of_line (struct it *it)
          && !it->glyph_row->continued_p))
     return;
 
+  /* The default face, possibly remapped. */
+  default_face = FACE_FROM_ID (f, lookup_basic_face (f, DEFAULT_FACE_ID));
+
   /* Face extension extends the background and box of IT->face_id
      to the end of the line.  If the background equals the background
      of the frame, we don't have to do anything.  */
@@ -18260,7 +18265,7 @@ extend_face_to_end_of_line (struct it *it)
       if (it->glyph_row->used[TEXT_AREA] == 0)
         {
           it->glyph_row->glyphs[TEXT_AREA][0] = space_glyph;
-          it->glyph_row->glyphs[TEXT_AREA][0].face_id = it->face_id;
+          it->glyph_row->glyphs[TEXT_AREA][0].face_id = face->id;
           it->glyph_row->used[TEXT_AREA] = 1;
         }
 #ifdef HAVE_WINDOW_SYSTEM
@@ -18296,7 +18301,7 @@ extend_face_to_end_of_line (struct it *it)
                  face, to avoid painting the rest of the window with
                  the region face, if the region ends at ZV.  */
               if (it->glyph_row->ends_at_zv_p)
-                it->face_id = DEFAULT_FACE_ID;
+                it->face_id = default_face->id;
               else
                 it->face_id = face->id;
               append_stretch_glyph (it, make_number (0), stretch_width,
@@ -18329,7 +18334,7 @@ extend_face_to_end_of_line (struct it *it)
          avoid painting the rest of the window with the region face,
          if the region ends at ZV.  */
       if (it->glyph_row->ends_at_zv_p)
-        it->face_id = DEFAULT_FACE_ID;
+        it->face_id = default_face->id;
       else
         it->face_id = face->id;
 
@@ -18993,8 +18998,13 @@ display_line (struct it *it)
           /* A row that displays right-to-left text must always have
              its last face extended all the way to the end of line,
              even if this row ends in ZV, because we still write to
-             the screen left to right.  */
-          if (row->reversed_p)
+             the screen left to right.  We also need to extend the
+             last face if the default face is remapped to some
+             different face, otherwise the functions that clear
+             portions of the screen will clear with the default face's
+             background color.  */
+          if (row->reversed_p
+              || lookup_basic_face (it->f, DEFAULT_FACE_ID) != DEFAULT_FACE_ID)
             extend_face_to_end_of_line (it);
           break;
         }