The "flush" face property. -------------------- ChangeLog entries follow: -------------------- src/ChangeLog addition: 2011-12-23 Didier Verna <didier@xemacs.org> * faces.h (struct Lisp_Face): New 'flush slot. * faces.h (struct face_cachel): New 'flush and 'flush_specified flags. * faces.h (WINDOW_FACE_CACHEL_FLUSH_P): * faces.h (FACE_FLUSH_P): New macros. * faces.c: Declare Qflush. * lisp.h: Externalize it. * faces.c (syms_of_faces): Define it. * faces.c (vars_of_faces): Update built-in face specifiers. * faces.c (complex_vars_of_faces): Update specifier fallbacks. * faces.c (mark_face): * faces.c (face_equal): * faces.c (face_getprop): * faces.c (face_putprop): * faces.c (face_remprop): * faces.c (face_plist): * faces.c (reset_face): * faces.c (update_face_inheritance_mapper): * faces.c (Fmake_face): * faces.c (update_face_cachel_data): * faces.c (merge_face_cachel_data): * faces.c (Fcopy_face): * fontcolor.c (face_boolean_validate): Handle the flush property. * redisplay.h (struct display_line): Rename 'default_findex slot to clearer name 'clear_findex. * redisplay.h (DISPLAY_LINE_INIT): Update accordingly. * redisplay-output.c (compare_display_blocks): * redisplay-output.c (output_display_line): * redisplay-output.c (redisplay_output_window): * redisplay.c (regenerate_window_extents_only_changed): * redisplay.c (regenerate_window_incrementally): Update the comparison tests between the current and desired display lines to cope for different 'clear_findex values. * redisplay.c (create_text_block): Initialize the display line's 'clear_findex slot to DEFAULT_INDEX. Record a new 'clear_findex value when we encounter a newline character displayed in a flushed face. * redisplay.c (create_string_text_block): Record a new 'clear_findex value when we encounter a newline character displayed in a flushed face. lisp/ChangeLog addition: 2011-12-23 Didier Verna <didier@xemacs.org> * cl-macs.el (face-flush-p): New defsetf. * faces.el (set-face-property): Document the flush property. * faces.el (face-flush-p): New function. * faces.el (set-face-flush-p): New function. * faces.el (face-equal): * cus-face.el (custom-face-attributes): * x-faces.el (x-init-face-from-resources): * x-faces.el (make-face-x-resource-internal): Handle the flush property.

--- a/src/redisplay.h	Thu Dec 22 15:02:02 2011 +0000
+++ b/src/redisplay.h	Fri Dec 23 10:56:16 2011 +0100
@@ -322,17 +322,17 @@
   glyph_block_dynarr *left_glyphs;
   glyph_block_dynarr *right_glyphs;
 
-  face_index	left_margin_findex;
-  face_index	right_margin_findex;
-  face_index	default_findex;
+  face_index left_margin_findex;
+  face_index right_margin_findex;
+  face_index clear_findex;
 };
 
-#define DISPLAY_LINE_INIT(dl)			\
-  do						\
-    {						\
-      xzero (dl);				\
-      dl.default_findex = DEFAULT_INDEX;	\
-    }						\
+#define DISPLAY_LINE_INIT(dl)		\
+  do					\
+    {					\
+      xzero (dl);			\
+      dl.clear_findex = DEFAULT_INDEX;	\
+    }					\
   while (0)
 
 #define DISPLAY_LINE_HEIGHT(dl) \