Add code to initialize bidi iterator for displaying strings.

For now, ifdef'ed away.  Some more testing.

 src/bidi.c (bidi_level_of_next_char): Allow the sentinel "position"
 to pass the test for valid cached positions.
 src/xdisp.c (init_iterator): Call bidi_init_it only of a valid
 buffer position was specified.  Initialize paragraph_embedding to L2R.
 (reseat_to_string): Initialize the bidi iterator (for now ifdef'ed out).
 (display_string): If we need to ignore text properties of
 LISP_STRING, set IT->stop_charpos to IT->end_charpos.  (The
 original value of -1 will not work with bidi.)
 src/dispextern.h (struct bidi_string_data): New member lstring.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 96b8d7ae7be..51e4561f8db 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,21 @@
 2011-06-09  Eli Zaretskii  <eliz@gnu.org>
 
+        * bidi.c (bidi_level_of_next_char): Allow the sentinel "position"
+        to pass the test for valid cached positions.
+
+        * xdisp.c (init_iterator): Call bidi_init_it only of a valid
+        buffer position was specified.  Initialize paragraph_embedding to
+        L2R.
+        (reseat_to_string): Initialize the bidi iterator (for now ifdef'ed
+        out).
+        (display_string): If we need to ignore text properties of
+        LISP_STRING, set IT->stop_charpos to IT->end_charpos.  (The
+        original value of -1 will not work with bidi.)
+
+        * dispextern.h (struct bidi_string_data): New member lstring.
+
+2011-06-09  Eli Zaretskii  <eliz@gnu.org>
+
         * xdisp.c (Fcurrent_bidi_paragraph_direction): Initialize
         itb.string.s to NULL (avoids a crash in bidi_paragraph_init).