Imported readline 6.2, and upstream patch 001.

[patch 0/3] readline-6.2 rebase
http://sourceware.org/ml/gdb-patches/2011-05/msg00003.html
[patch 1/3] readline-6.2: Merge of already posted patches
http://sourceware.org/ml/gdb-patches/2011-05/msg00004.html
	=
	[Bug-readline] [RFC/readline] bind.c, rl_function_dumper, Free allocated
	http://lists.gnu.org/archive/html/bug-readline/2011-03/msg00000.html
	[Bug-readline] [patch] Fix underquotation in readline/examples/rlfe/conf
	http://lists.gnu.org/archive/html/bug-readline/2011-04/msg00001.html
	[Bug-readline] [patch] Makefile.in htm<->html
	http://lists.gnu.org/archive/html/bug-readline/2011-04/msg00002.html
	Re: [Bug-readline] [patch] Makefile.in dependency: callback.o: xmalloc.h
	http://lists.gnu.org/archive/html/bug-readline/2011-04/msg00004.html
	[Bug-readline] [patch] Remove . from the VPATH directive
	http://lists.gnu.org/archive/html/bug-readline/2011-04/msg00005.html
	Eli Zaretskii's __MSDOS__ / __GO32__ / __MINGW32__ / __DJGPP__ stuff:
	http://sourceware.org/ml/gdb/2011-04/msg00002.html
	Jan Kratochvil's patch for FSF GDB tree local-specific changes:
	http://sourceware.org/ml/gdb/2011-04/msg00006.html
	Preservation of existing ChangeLog.gdb files, their updates.
[patch 2/3] readline-6.2: Workaround "ask" regression
http://sourceware.org/ml/gdb-patches/2011-05/msg00005.html
[patch 3/3] readline-6.2: Revert 5.x compat., apply 6.x compat.
http://sourceware.org/ml/gdb-patches/2011-05/msg00006.html
[patch 4/3] readline-6.2: Substitute inc-hist.texinfo
http://sourceware.org/ml/gdb-patches/2011-05/msg00010.html

readline/
	Workaround gdb.base/completion.exp regression on readline-6.2.
	* complete.c (get_y_or_n): Disable the return on RL_STATE_CALLBACK.

	Imported readline 6.2, and upstream patch 001.
	* configure: Regenerate.

readline/doc/
	* hsuser.texi (Using History Interactively): Disable !BashFeatures
	@defcodeindex.  Make the `Programming with GNU History' reference
	external.
	* inc-hist.texinfo: Remove.

	Imported readline 6.2, and upstream patch 001.

readline/examples/
	Imported readline 6.2, and upstream patch 001.

readline/examples/rlfe/
	Imported readline 6.2, and upstream patch 001.

gdb/
	* config.in: Regenerate.
	* configure: Regenerate.
	* configure.ac <--with-system-readline> (for readline_echoing_p):
	Remove the test.
	* tui/tui-io.c (tui_old_readline_echoing_p): Rename to ...
	(tui_old_rl_echoing_p): ... here.
	(tui_setup_io): Rename extern declaration readline_echoing_p to
	_rl_echoing_p.  Adjust assignments for the both renames.

gdb/doc/
	* Makefile.in (GDB_DOC_SOURCE_INCLUDES): Rename inc-hist.texinfo to
	hsuser.texi.
	* gdb.texinfo <!SYSTEM_READLINE>: Rename inc-hist.texinfo inclusion and
	comment to hsuser.texi.  Change rluser.texi name in the comment.

1 files changed, 88 insertions, 25 deletions

diff --git a/readline/undo.c b/readline/undo.c
index fedfa12..eb042b2 100644
--- a/readline/undo.c
+++ b/readline/undo.c
@@ -1,25 +1,25 @@
 /* readline.c -- a general facility for reading lines of input
    with emacs style editing and completion. */
 
-/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+/* Copyright (C) 1987-2009 Free Software Foundation, Inc.
 
-   This file is part of the GNU Readline Library, a library for
-   reading lines of text with interactive input and history editing.
+   This file is part of the GNU Readline Library (Readline), a library
+   for reading lines of text with interactive input and history editing.      
 
-   The GNU Readline Library is free software; you can redistribute it
-   and/or modify it under the terms of the GNU General Public License
-   as published by the Free Software Foundation; either version 2, or
+   Readline is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
-   The GNU Readline Library is distributed in the hope that it will be
-   useful, but WITHOUT ANY WARRANTY; without even the implied warranty
-   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   Readline is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
-   The GNU General Public License is often shipped with GNU software, and
-   is generally kept in a file called COPYING or LICENSE.  If you do not
-   have a copy of the license, write to the Free Software Foundation,
-   59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+   You should have received a copy of the GNU General Public License
+   along with Readline.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #define READLINE_LIBRARY
 
 #if defined (HAVE_CONFIG_H)
@@ -50,6 +50,8 @@
 #include "rlprivate.h"
 #include "xmalloc.h"
 
+extern void replace_history_data PARAMS((int, histdata_t *, histdata_t *));
+
 /* Non-zero tells rl_delete_text and rl_insert_text to not add to
    the undo list. */
 int _rl_doing_an_undo = 0;
@@ -66,19 +68,35 @@ UNDO_LIST *rl_undo_list = (UNDO_LIST *)NULL;
 /*								    */
 /* **************************************************************** */
 
-/* Remember how to undo something.  Concatenate some undos if that
-   seems right. */
-void
-rl_add_undo (what, start, end, text)
+static UNDO_LIST *
+alloc_undo_entry (what, start, end, text)
      enum undo_code what;
      int start, end;
      char *text;
 {
-  UNDO_LIST *temp = (UNDO_LIST *)xmalloc (sizeof (UNDO_LIST));
+  UNDO_LIST *temp;
+
+  temp = (UNDO_LIST *)xmalloc (sizeof (UNDO_LIST));
   temp->what = what;
   temp->start = start;
   temp->end = end;
   temp->text = text;
+
+  temp->next = (UNDO_LIST *)NULL;
+  return temp;
+}
+
+/* Remember how to undo something.  Concatenate some undos if that
+   seems right. */
+void
+rl_add_undo (what, start, end, text)
+     enum undo_code what;
+     int start, end;
+     char *text;
+{
+  UNDO_LIST *temp;
+
+  temp = alloc_undo_entry (what, start, end, text);
   temp->next = rl_undo_list;
   rl_undo_list = temp;
 }
@@ -87,17 +105,60 @@ rl_add_undo (what, start, end, text)
 void
 rl_free_undo_list ()
 {
+  UNDO_LIST *release, *orig_list;
+
+  orig_list = rl_undo_list;
   while (rl_undo_list)
     {
-      UNDO_LIST *release = rl_undo_list;
+      release = rl_undo_list;
       rl_undo_list = rl_undo_list->next;
 
       if (release->what == UNDO_DELETE)
-	free (release->text);
+	xfree (release->text);
 
-      free (release);
+      xfree (release);
     }
   rl_undo_list = (UNDO_LIST *)NULL;
+  replace_history_data (-1, (histdata_t *)orig_list, (histdata_t *)NULL);
+}
+
+UNDO_LIST *
+_rl_copy_undo_entry (entry)
+     UNDO_LIST *entry;
+{
+  UNDO_LIST *new;
+
+  new = alloc_undo_entry (entry->what, entry->start, entry->end, (char *)NULL);
+  new->text = entry->text ? savestring (entry->text) : 0;
+  return new;
+}
+
+UNDO_LIST *
+_rl_copy_undo_list (head)
+     UNDO_LIST *head;
+{
+  UNDO_LIST *list, *new, *roving, *c;
+
+  if (head == 0)
+    return head;
+
+  list = head;
+  new = 0;
+  while (list)
+    {
+      c = _rl_copy_undo_entry (list);
+      if (new == 0)
+	roving = new = c;
+      else
+	{
+	  roving->next = c;
+	  roving = roving->next;
+	}
+      list = list->next;
+    }
+
+  roving->next = 0;
+  return new;
 }
 
 /* Undo the next thing in the list.  Return 0 if there
@@ -113,7 +174,7 @@ rl_do_undo ()
   start = end = waiting_for_begin = 0;
   do
     {
-      if (!rl_undo_list)
+      if (rl_undo_list == 0)
 	return (0);
 
       _rl_doing_an_undo = 1;
@@ -133,7 +194,7 @@ rl_do_undo ()
 	case UNDO_DELETE:
 	  rl_point = start;
 	  rl_insert_text (rl_undo_list->text);
-	  free (rl_undo_list->text);
+	  xfree (rl_undo_list->text);
 	  break;
 
 	/* Undoing inserts means deleting some text. */
@@ -161,7 +222,9 @@ rl_do_undo ()
 
       release = rl_undo_list;
       rl_undo_list = rl_undo_list->next;
-      free (release);
+      replace_history_data (-1, (histdata_t *)release, (histdata_t *)rl_undo_list);
+
+      xfree (release);
     }
   while (waiting_for_begin);
 
@@ -231,7 +294,7 @@ int
 rl_revert_line (count, key)
      int count, key;
 {
-  if (!rl_undo_list)
+  if (rl_undo_list == 0)
     rl_ding ();
   else
     {