2 files changed, 22 insertions, 43 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 52fd1db4102..88df9f13762 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,10 @@
 2013-08-14  Dmitry Antipov  <dmantipov@yandex.ru>
 
+        * xdisp.c (adjust_window_ends): Move duplicated code to new function.
+        (try_window, try_window_reusing_current_matrix, try_window_id): Use it.
+
+2013-08-14  Dmitry Antipov  <dmantipov@yandex.ru>
+
         * window.h (struct window): Convert window_end_pos and
         window_end_vpos from Lisp_Object to ptrdiff_t and int, respectively.
         (wset_window_end_pos, wset_window_end_vpos): Remove.
diff --git a/src/xdisp.c b/src/xdisp.c
index a1b12b9f60e..b8520e36344 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -2461,7 +2461,16 @@ remember_mouse_glyph (struct frame *f, int gx, int gy, NativeRectangle *rect)
 
 #endif /* HAVE_WINDOW_SYSTEM */
 
-
+static void
+adjust_window_ends (struct window *w, struct glyph_row *row, bool current)
+{
+  eassert (w);
+  w->window_end_pos = Z - MATRIX_ROW_END_CHARPOS (row);
+  w->window_end_bytepos = Z_BYTE - MATRIX_ROW_END_BYTEPOS (row);
+  w->window_end_vpos
+    = MATRIX_ROW_VPOS (row, current ? w->current_matrix : w->desired_matrix);
+}
+
 /***********************************************************************
                         Lisp form evaluation
  ***********************************************************************/
@@ -16291,9 +16300,7 @@ try_window (Lisp_Object window, struct text_pos pos, int flags)
   if (last_text_row)
     {
       eassert (MATRIX_ROW_DISPLAYS_TEXT_P (last_text_row));
-      w->window_end_bytepos = Z_BYTE - MATRIX_ROW_END_BYTEPOS (last_text_row);
-      w->window_end_pos = Z - MATRIX_ROW_END_CHARPOS (last_text_row);
-      w->window_end_vpos = MATRIX_ROW_VPOS (last_text_row, w->desired_matrix);
+      adjust_window_ends (w, last_text_row, 0);
       eassert
         (MATRIX_ROW_DISPLAYS_TEXT_P (MATRIX_ROW (w->desired_matrix,
                                                  w->window_end_vpos)));
@@ -16526,23 +16533,9 @@ try_window_reusing_current_matrix (struct window *w)
          The value of last_text_row is the last displayed line
          containing text.  */
       if (last_reused_text_row)
-        {
-          w->window_end_bytepos
-            = Z_BYTE - MATRIX_ROW_END_BYTEPOS (last_reused_text_row);
-          w->window_end_pos
-            = Z - MATRIX_ROW_END_CHARPOS (last_reused_text_row);
-          w->window_end_vpos
-            = MATRIX_ROW_VPOS (last_reused_text_row, w->current_matrix);
-        }
+        adjust_window_ends (w, last_reused_text_row, 1);
       else if (last_text_row)
-        {
-          w->window_end_bytepos
-            = Z_BYTE - MATRIX_ROW_END_BYTEPOS (last_text_row);
-          w->window_end_pos
-            = Z - MATRIX_ROW_END_CHARPOS (last_text_row);
-          w->window_end_vpos
-            = MATRIX_ROW_VPOS (last_text_row, w->desired_matrix);
-        }
+        adjust_window_ends (w, last_text_row, 0);
       else
         {
           /* This window must be completely empty.  */
@@ -16733,14 +16726,7 @@ try_window_reusing_current_matrix (struct window *w)
          the window end is in reused rows which in turn means that
          only its vpos can have changed.  */
       if (last_text_row)
-        {
-          w->window_end_bytepos
-            = Z_BYTE - MATRIX_ROW_END_BYTEPOS (last_text_row);
-          w->window_end_pos
-            = Z - MATRIX_ROW_END_CHARPOS (last_text_row);
-          w->window_end_vpos
-            = MATRIX_ROW_VPOS (last_text_row, w->desired_matrix);
-        }
+        adjust_window_ends (w, last_text_row, 0);
       else
         w->window_end_vpos -= nrows_scrolled;
 
@@ -17748,21 +17734,13 @@ try_window_id (struct window *w)
       row = find_last_row_displaying_text (w->current_matrix, &it,
                                            first_unchanged_at_end_row);
       eassert (row && MATRIX_ROW_DISPLAYS_TEXT_P (row));
-
-      w->window_end_pos = Z - MATRIX_ROW_END_CHARPOS (row);
-      w->window_end_bytepos = Z_BYTE - MATRIX_ROW_END_BYTEPOS (row);
-      w->window_end_vpos = MATRIX_ROW_VPOS (row, w->current_matrix);
+      adjust_window_ends (w, row, 1);
       eassert (w->window_end_bytepos >= 0);
       IF_DEBUG (debug_method_add (w, "A"));
     }
   else if (last_text_row_at_end)
     {
-      w->window_end_pos
-        = Z - MATRIX_ROW_END_CHARPOS (last_text_row_at_end);
-      w->window_end_bytepos
-        = Z_BYTE - MATRIX_ROW_END_BYTEPOS (last_text_row_at_end);
-      w->window_end_vpos
-        = MATRIX_ROW_VPOS (last_text_row_at_end, desired_matrix);
+      adjust_window_ends (w, last_text_row_at_end, 0);
       eassert (w->window_end_bytepos >= 0);
       IF_DEBUG (debug_method_add (w, "B"));
     }
@@ -17771,11 +17749,7 @@ try_window_id (struct window *w)
       /* We have displayed either to the end of the window or at the
          end of the window, i.e. the last row with text is to be found
          in the desired matrix.  */
-      w->window_end_pos
-        = Z - MATRIX_ROW_END_CHARPOS (last_text_row);
-      w->window_end_bytepos
-        = Z_BYTE - MATRIX_ROW_END_BYTEPOS (last_text_row);
-      w->window_end_vpos = MATRIX_ROW_VPOS (last_text_row, desired_matrix);
+      adjust_window_ends (w, last_text_row, 0);
       eassert (w->window_end_bytepos >= 0);
     }
   else if (first_unchanged_at_end_row == NULL