Initial reimplementation of calculating line edge positions in bidi lines.

 dispextern.h (struct glyph_row): New members minpos and maxpos.
 (MATRIX_ROW_START_CHARPOS, MATRIX_ROW_START_BYTEPOS)
 (MATRIX_ROW_END_CHARPOS, MATRIX_ROW_END_BYTEPOS): Reference minpos
 and maxpos members instead of start.pos and end.pos, respectively.
 xdisp.c (display_line): Compare IT_CHARPOS with the position in
 row->start.pos, rather than with MATRIX_ROW_START_CHARPOS.
 (cursor_row_p): Use row->end.pos rather than MATRIX_ROW_END_CHARPOS.
 (try_window_reusing_current_matrix, try_window_id): Use
 ROW->minpos rather than ROW->start.pos.
 (init_from_display_pos, init_iterator): Use EMACS_INT for
 character and byte positions.
 (find_row_edges): Renamed from find_row_end.  Accept additional
 arguments for minimum and maximum buffer positions seen by
 display_line for this row.  Don't use iterator to find the
 position following the maximum one; instead, increment the
 position found by display_line directly.
 (display_line): Record minimum and maximum buffer positions for
 glyphs in this row.  Record the position of the newline that
 terminates the line.
 dispnew.c (increment_row_positions, check_matrix_invariants):
 Increment and check row->start.pos and row->end.pos, in addition
 to MATRIX_ROW_START_CHARPOS and MATRIX_ROW_END_CHARPOS.

1 files changed, 29 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index b0965f8e514..fe30d07692a 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,30 @@
+2010-05-18  Eli Zaretskii  <eliz@gnu.org>
+
+        * dispextern.h (struct glyph_row): New members minpos and maxpos.
+        (MATRIX_ROW_START_CHARPOS, MATRIX_ROW_START_BYTEPOS)
+        (MATRIX_ROW_END_CHARPOS, MATRIX_ROW_END_BYTEPOS): Reference minpos
+        and maxpos members instead of start.pos and end.pos, respectively.
+
+        * xdisp.c (display_line): Compare IT_CHARPOS with the position in
+        row->start.pos, rather than with MATRIX_ROW_START_CHARPOS.
+        (cursor_row_p): Use row->end.pos rather than MATRIX_ROW_END_CHARPOS.
+        (try_window_reusing_current_matrix, try_window_id): Use
+        ROW->minpos rather than ROW->start.pos.
+        (init_from_display_pos, init_iterator): Use EMACS_INT for
+        character and byte positions.
+        (find_row_edges): Renamed from find_row_end.  Accept additional
+        arguments for minimum and maximum buffer positions seen by
+        display_line for this row.  Don't use iterator to find the
+        position following the maximum one; instead, increment the
+        position found by display_line directly.
+        (display_line): Record minimum and maximum buffer positions for
+        glyphs in this row.  Record the position of the newline that
+        terminates the line.
+
+        * dispnew.c (increment_row_positions, check_matrix_invariants):
+        Increment and check row->start.pos and row->end.pos, in addition
+        to MATRIX_ROW_START_CHARPOS and MATRIX_ROW_END_CHARPOS.
+
 2010-05-18  Juanma Barranquero  <lekktu@gmail.com>
 
         * charset.c (load_charset_map_from_file): Don't call close after fclose.
@@ -91,6 +118,8 @@
         * xdisp.c (Fcurrent_bidi_paragraph_direction): New function.
         (syms_of_xdisp): Defsubr it.
 
+        * cmds.c (Fforward_char, Fbackward_char): Doc fix.
+
         * Makefile.in: Fix MSDOS-related comments.
 
 2010-05-15  Glenn Morris  <rgm@gnu.org>