Preliminary attempt to fix horizontal scroll bar dragging with bidi text.

* w32term.c (w32_horizontal_scroll_bar_handle_click): In y part
of emacs_event return length from si.nPage to si.nMax.
* xdisp.c (set_horizontal_scroll_bar): For right-to-left text
interchange start and end of thumb.
* scroll-bar.el (scroll-bar-horizontal-drag-1): Use cdr of
portion-whole for scrolling right-to-left text.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 91b72e479d7..8e6e75e8b53 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,10 @@
+2014-08-16  Martin Rudalics  <rudalics@gmx.at>
+
+        * w32term.c (w32_horizontal_scroll_bar_handle_click): In y part
+        of emacs_event return length from si.nPage to si.nMax.
+        * xdisp.c (set_horizontal_scroll_bar): For right-to-left text
+        interchange start and end of thumb.
+
 2014-08-15  Ken Brown  <kbrown@cornell.edu>
 
         * gmalloc.c (_malloc_mutex, _aligned_blocks_mutex) [CYGWIN]: Use