Fix bug #9545 with crash in Dired when $ is pressed.

 src/xdisp.c (reseat_at_next_visible_line_start): Undo the change made on
 2011-09-17 that saved paragraph information and restored it after
 the call to `reseat'.

2 files changed, 4 insertions, 42 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index b81c5cf9792..1e110cc5139 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -8,6 +8,9 @@
 	(produce_stretch_glyph): Fix a bug in :align-to on a TTY when the
 	column is beyond frame width: don't subtract 1 "pixel" when
 	computing width of the stretch.
+	(reseat_at_next_visible_line_start): Undo the change made on
+	2011-09-17 that saved paragraph information and restored it after
+	the call to `reseat'.  (Bug#9545)
 
 2011-09-18  YAMAMOTO Mitsuharu  <mituharu@math.s.chiba-u.ac.jp>
 
diff --git a/src/xdisp.c b/src/xdisp.c
index 97d59644b15..d58eea538f5 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -5722,10 +5722,6 @@ reseat_at_next_visible_line_start (struct it *it, int on_newline_p)
 {
   int newline_found_p, skipped_p = 0;
   struct bidi_it bidi_it_prev;
-  int new_paragraph IF_LINT (= 0), first_elt IF_LINT (= 0);
-  int disp_prop IF_LINT (= 0);
-  EMACS_INT paragraph_end IF_LINT (= 0), disp_pos IF_LINT (= 0);
-  bidi_dir_t paragraph_dir IF_LINT (= 0);
 
   newline_found_p = forward_to_next_line_start (it, &skipped_p, &bidi_it_prev);
 
@@ -5742,23 +5738,6 @@ reseat_at_next_visible_line_start (struct it *it, int on_newline_p)
 	  forward_to_next_line_start (it, &skipped_p, &bidi_it_prev);
       }
 
-  /* Under bidi iteration, save the attributes of the paragraph we are
-     in, to be restored after the call to `reseat' below.  That's
-     because `reseat' overwrites them, which requires unneeded and
-     potentially expensive backward search for paragraph beginning.
-     This search is unnecessary because we will be `reseat'ed to the
-     same position where we are now, for which we already have all the
-     information we need in the bidi iterator.  */
-  if (it->bidi_p && !STRINGP (it->string))
-    {
-      new_paragraph = it->bidi_it.new_paragraph;
-      first_elt = it->bidi_it.first_elt;
-      paragraph_end = it->bidi_it.separator_limit;
-      paragraph_dir = it->bidi_it.paragraph_dir;
-      disp_pos = it->bidi_it.disp_pos;
-      disp_prop = it->bidi_it.disp_prop;
-    }
-
   /* Position on the newline if that's what's requested.  */
   if (on_newline_p && newline_found_p)
     {
@@ -5798,30 +5777,10 @@ reseat_at_next_visible_line_start (struct it *it, int on_newline_p)
 	      IT_BYTEPOS (*it) = it->bidi_it.bytepos;
 	    }
 	  reseat (it, it->current.pos, 0);
-	  if (it->bidi_p)
-	    {
-	      it->bidi_it.new_paragraph = new_paragraph;
-	      it->bidi_it.first_elt = first_elt;
-	      it->bidi_it.separator_limit = paragraph_end;
-	      it->bidi_it.paragraph_dir = paragraph_dir;
-	      it->bidi_it.disp_pos = disp_pos;
-	      it->bidi_it.disp_prop = disp_prop;
-	    }
 	}
     }
   else if (skipped_p)
-    {
-      reseat (it, it->current.pos, 0);
-      if (it->bidi_p && !STRINGP (it->string))
-	{
-	  it->bidi_it.new_paragraph = new_paragraph;
-	  it->bidi_it.first_elt = first_elt;
-	  it->bidi_it.separator_limit = paragraph_end;
-	  it->bidi_it.paragraph_dir = paragraph_dir;
-	  it->bidi_it.disp_pos = disp_pos;
-	  it->bidi_it.disp_prop = disp_prop;
-	}
-    }
+    reseat (it, it->current.pos, 0);
 
   CHECK_IT (it);
 }