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/faces.h	Thu Dec 22 15:02:02 2011 +0000
+++ b/src/faces.h	Fri Dec 23 10:56:16 2011 +0100
@@ -54,6 +54,7 @@
   Lisp_Object dim;
   Lisp_Object blinking;
   Lisp_Object reverse;
+  Lisp_Object flush;
 
   Lisp_Object plist;
 
@@ -180,6 +181,7 @@
   unsigned int dim :1;
   unsigned int blinking :1;
   unsigned int reverse :1;
+  unsigned int flush :1;
 
   /* Used when merging to tell if the above field represents an actual
      value of this face or a fallback value. */
@@ -197,6 +199,7 @@
   unsigned int dim_specified :1;
   unsigned int blinking_specified :1;
   unsigned int reverse_specified :1;
+  unsigned int flush_specified :1;
 
   /* The updated flag is set after we calculate the values for the
      face cachel and cleared whenever a face changes, to indicate
@@ -356,6 +359,8 @@
   (WINDOW_FACE_CACHEL (window, index)->blinking)
 #define WINDOW_FACE_CACHEL_REVERSE_P(window, index)			\
   (WINDOW_FACE_CACHEL (window, index)->reverse)
+#define WINDOW_FACE_CACHEL_FLUSH_P(window, index)			\
+  (WINDOW_FACE_CACHEL (window, index)->flush)
 
 #define FACE_PROPERTY_SPECIFIER(face, property) Fget (face, property, Qnil)
 
@@ -417,5 +422,7 @@
   (!NILP (FACE_PROPERTY_INSTANCE (face, Qblinking, domain, 0, Qzero)))
 #define FACE_REVERSE_P(face, domain)					\
   (!NILP (FACE_PROPERTY_INSTANCE (face, Qreverse, domain, 0, Qzero)))
+#define FACE_FLUSH_P(face, domain)					\
+  (!NILP (FACE_PROPERTY_INSTANCE (face, Qflush, domain, 0, Qzero)))
 
 #endif /* INCLUDED_faces_h_ */