Fix last change in buffer_posn_from_coords for text terminals.

 dispnew.c (buffer_posn_from_coords): Add one-character offset for R2L lines.

src/ChangeLog

 2010-08-20  Eli Zaretskii  <eliz@gnu.org>
+	* dispnew.c (buffer_posn_from_coords): Fix last change for text
+	terminals: add one-character offset for R2L lines.
+
 	* emacs.c <emacs_version>: Add a comment regarding
 	msdos/mainmake.v2's dependency on the syntax of this declaration.

src/dispnew.c

@@ -5402,7 +5402,10 @@ buffer_posn_from_coords (struct window *w, int *x, int *y, struct display_pos *p
        iterator doesn't know about that.)  The following line adjusts
        the pixel position to the iterator geometry, which is what
        move_it_* routines use.  */
-    to_x = window_box_width (w, TEXT_AREA) - to_x;
+    to_x = window_box_width (w, TEXT_AREA) - to_x
+	   /* Text terminals need a one-character offset to get it right.  */
+	   - (FRAME_MSDOS_P (WINDOW_XFRAME (w))
+	      || FRAME_TERMCAP_P (WINDOW_XFRAME (w)));
 
   /* Now move horizontally in the row to the glyph under *X. */
   move_it_in_display_line (&it, ZV, to_x, MOVE_TO_X);