Fix mouse highlight in bidi-reordered continued lines.

 xdisp.c (row_containing_pos): Don't return too early when CHARPOS is in a
 bidi-reordered continued line.  Return immediately when the first
 hit is found in a line that is not continued, or when an exact
 match for CHARPOS is found.
 (mouse_face_from_buffer_pos): Rewrite to not assume that
 START_CHARPOS is always in mouse_face_beg_row.  If necessary, swap
 mouse_face_beg_row and mouse_face_end_row so that the former is
 always above the latter or identical to it.

 Continued lines that begin or end outside of the visible region 
 still don't work.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 2b77f081f52..61afecff203 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -5,6 +5,14 @@
         (note_mouse_highlight): Clear mouse highlight when mouse pointer
         is in a R2L row on the stretch glyph that stands for no text
         beyond the line end.
+        (row_containing_pos): Don't return too early when CHARPOS is in a
+        bidi-reordered continued line.  Return immediately when the first
+        hit is found in a line that is not continued, or when an exact
+        match for CHARPOS is found.
+        (mouse_face_from_buffer_pos): Rewrite to not assume that
+        START_CHARPOS is always in mouse_face_beg_row.  If necessary, swap
+        mouse_face_beg_row and mouse_face_end_row so that the former is
+        always above the latter or identical to it.
 
 2010-08-28  Eli Zaretskii  <eliz@gnu.org>