(handle_single_display_prop): Don't signal error in

lookup_named_face for unknown fringe face name.
(highlight_trailing_whitespace): Don't signal error in
lookup_named_face if trailing-whitespace face unknown.
(calc_line_height_property): Don't signal error in
lookup_named_face if specified face name is unknown.

1 files changed, 8 insertions, 7 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 3b7b9d39f81..d13f89ad27b 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -3575,7 +3575,7 @@ handle_single_display_prop (it, prop, object, position,
               || EQ (XCAR (prop), Qright_fringe))
           && CONSP (XCDR (prop)))
         {
-          unsigned face_id = DEFAULT_FACE_ID;
+          int face_id = DEFAULT_FACE_ID;
           int fringe_bitmap;
 
           /* Save current settings of IT so that we can restore them
@@ -3594,10 +3594,9 @@ handle_single_display_prop (it, prop, object, position,
           if (CONSP (XCDR (XCDR (prop))))
             {
               Lisp_Object face_name = XCAR (XCDR (XCDR (prop)));
-
-              face_id = lookup_named_face (it->f, face_name, 'A');
-              if (face_id < 0)
-                return 0;
+              int face_id2 = lookup_named_face (it->f, face_name, 'A', 0);
+              if (face_id2 >= 0)
+                face_id = face_id2;
             }
 
           push_it (it);
@@ -14534,7 +14533,9 @@ highlight_trailing_whitespace (f, row)
                   && glyph->u.ch == ' '))
           && trailing_whitespace_p (glyph->charpos))
         {
-          int face_id = lookup_named_face (f, Qtrailing_whitespace, 0);
+          int face_id = lookup_named_face (f, Qtrailing_whitespace, 0, 0);
+          if (face_id < 0)
+            return;
 
           while (glyph >= start
                  && BUFFERP (glyph->object)
@@ -18808,7 +18809,7 @@ calc_line_height_property (it, prop, font, boff, total)
       struct face *face;
       struct font_info *font_info;
 
-      face_id = lookup_named_face (it->f, face_name, ' ');
+      face_id = lookup_named_face (it->f, face_name, ' ', 0);
       if (face_id < 0)
         return make_number (-1);