Discovery of replacing display properties now uses the same code

as the display engine.  Tested OK with display properties whose
value is a list.

 src/dispextern.h (struct bidi_it): New member frame_window_p.
 (bidi_init_it, compute_display_string_pos): Update prototypes.
 src/bidi.c (bidi_fetch_char): Accept additional argument
 FRAME_WINDOW_P and pass it to compute_display_string_pos.  All
 callers changed.
 (bidi_init_it): Accept additional argument FRAME_WINDOW_P and use
 it to initialize the frame_window_p member of struct bidi_it.
 src/xdisp.c (handle_display_spec): New function, refactored from the
 last portion of handle_display_prop.
 (compute_display_string_pos): Accept additional argument
 FRAME_WINDOW_P.  Call handle_display_spec to determine whether the
 value of a `display' property is a "replacing spec".
 (handle_single_display_spec): Accept 2 additional arguments BUFPOS
 and FRAME_WINDOW_P.  If IT is NULL, don't set up the iterator from
 the display property, but just return a value indicating whether
 the display property will replace the characters it covers.
 (Fcurrent_bidi_paragraph_direction): Initialize the nchars and
 frame_window_p members of struct bidi_it.

1 files changed, 23 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index fdb98351672..f7807b90941 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,26 @@
+2011-05-21  Eli Zaretskii  <eliz@gnu.org>
+
+        * xdisp.c (handle_display_spec): New function, refactored from the
+        last portion of handle_display_prop.
+        (compute_display_string_pos): Accept additional argument
+        FRAME_WINDOW_P.  Call handle_display_spec to determine whether the
+        value of a `display' property is a "replacing spec".
+        (handle_single_display_spec): Accept 2 additional arguments BUFPOS
+        and FRAME_WINDOW_P.  If IT is NULL, don't set up the iterator from
+        the display property, but just return a value indicating whether
+        the display property will replace the characters it covers.
+        (Fcurrent_bidi_paragraph_direction): Initialize the nchars and
+        frame_window_p members of struct bidi_it.
+
+        * bidi.c (bidi_fetch_char): Accept additional argument
+        FRAME_WINDOW_P and pass it to compute_display_string_pos.  All
+        callers changed.
+        (bidi_init_it): Accept additional argument FRAME_WINDOW_P and use
+        it to initialize the frame_window_p member of struct bidi_it.
+
+        * dispextern.h (struct bidi_it): New member frame_window_p.
+        (bidi_init_it, compute_display_string_pos): Update prototypes.
+
 2011-05-14  Eli Zaretskii  <eliz@gnu.org>
 
         * xdisp.c (compute_display_string_pos): Non-trivial implementation.