Fix Fwindow_text_pixel_size and fit-frame-to-buffer.

* xdisp.c (last_max_ascent): Re-remove after erroneously
reintroducing it on 2013-11-30 and abolishing Dmitry's removal
from 2013-03-29.
(move_it_to): Re-remove reference to last_max_ascent.
(Fwindow_text_pixel_size): Add iterator's max_ascent and
max_descent here instead of calling line_bottom_y.  Fix
doc-string.

* window.el (fit-frame-to-buffer): Fix calculations for margins and
height constraints.

2 files changed, 13 insertions, 13 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index ff3be1d7666..5fc29d30d4c 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,13 @@
+2014-01-28  Martin Rudalics  <rudalics@gmx.at>
+
+        * xdisp.c (last_max_ascent): Re-remove after erroneously
+        reintroducing it on 2013-11-30 and abolishing Dmitry's removal
+        from 2013-03-29.
+        (move_it_to): Re-remove reference to last_max_ascent.
+        (Fwindow_text_pixel_size): Add iterator's max_ascent and
+        max_descent here instead of calling line_bottom_y.  Fix
+        doc-string.
+
 2014-01-28  Dmitry Antipov  <dmantipov@yandex.ru>
 
         * terminal.c (initial_free_frame_resources): New function.
diff --git a/src/xdisp.c b/src/xdisp.c
index 7717f1c2861..b5dec35568a 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -571,7 +571,7 @@ static struct glyph scratch_glyphs[MAX_SCRATCH_GLYPHS];
 
 /* Ascent and height of the last line processed by move_it_to.  */
 
-static int last_max_ascent, last_height;
+static int last_height;
 
 /* Non-zero if there's a help-echo in the echo area.  */
 
@@ -9099,7 +9099,6 @@ move_it_to (struct it *it, ptrdiff_t to_charpos, int to_x, int to_y, int to_vpos
       it->current_y += it->max_ascent + it->max_descent;
       ++it->vpos;
       last_height = it->max_ascent + it->max_descent;
-      last_max_ascent = it->max_ascent;
       it->max_ascent = it->max_descent = 0;
     }
 
@@ -9126,7 +9125,6 @@ move_it_to (struct it *it, ptrdiff_t to_charpos, int to_x, int to_y, int to_vpos
       it->current_y += it->max_ascent + it->max_descent;
       ++it->vpos;
       last_height = it->max_ascent + it->max_descent;
-      last_max_ascent = it->max_ascent;
     }
 
   if (backup_data)
@@ -9511,7 +9509,7 @@ Optional argument MODE_AND_HEADER_LINE nil or omitted means do not
 include the height of the mode- or header-line of WINDOW in the return
 value.  If it is either the symbol `mode-line' or `header-line', include
 only the height of that line, if present, in the return value.  If t,
-include the height of any of these lines in the return value.  */)
+include the height of both, if present, in the return value.  */)
   (Lisp_Object window, Lisp_Object from, Lisp_Object to, Lisp_Object x_limit, Lisp_Object y_limit,
    Lisp_Object mode_and_header_line)
 {
@@ -9579,7 +9577,6 @@ include the height of any of these lines in the return value.  */)
   SET_TEXT_POS (startp, start, CHAR_TO_BYTE (start));
   start_display (&it, w, startp);
 
-  /**   move_it_vertically_backward (&it, 0); **/
   if (NILP (x_limit))
     x = move_it_to (&it, end, -1, max_y, -1, MOVE_TO_POS | MOVE_TO_Y);
   else
@@ -9593,14 +9590,7 @@ include the height of any of these lines in the return value.  */)
                       MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y);
     }
 
-  if (start == end)
-    y = it.current_y;
-  else
-    {
-      /* Count last line.  */
-      last_height = 0;
-      y = line_bottom_y (&it); /* - y; */
-    }
+  y = it.current_y + it.max_ascent + it.max_descent;
 
   if (!EQ (mode_and_header_line, Qheader_line)
       && !EQ (mode_and_header_line, Qt))