X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=readline%2Fhistsearch.c;h=1ad55d22d3010d1a74c963addd46d5d9de0b0c78;hb=4aae6e5abddb84e1225cfd696b8fd2c6832f9fb6;hp=7e98e950acb1495c982a6c346931b7b67ab3a9e3;hpb=d60d9f651ab04df95fcd31488fbb46be263382ae;p=deliverable%2Fbinutils-gdb.git

diff --git a/readline/histsearch.c b/readline/histsearch.c
index 7e98e950ac..1ad55d22d3 100644
--- a/readline/histsearch.c
+++ b/readline/histsearch.c
@@ -1,24 +1,23 @@
 /* histsearch.c -- searching the history list. */
 
-/* Copyright (C) 1989, 1992 Free Software Foundation, Inc.
+/* Copyright (C) 1989, 1992-2009 Free Software Foundation, Inc.
 
-   This file contains the GNU History Library (the Library), a set of
+   This file contains the GNU History Library (History), a set of
    routines for managing the text of previously typed lines.
 
-   The Library is free software; you can redistribute it and/or modify
+   History 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 1, or (at your option)
-   any later version.
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
 
-   The 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 GNU
-   General Public License for more details.
+   History 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,
-   675 Mass Ave, Cambridge, MA 02139, USA. */
+   You should have received a copy of the GNU General Public License
+   along with History.  If not, see <http://www.gnu.org/licenses/>.
+*/
 
 #define READLINE_LIBRARY
 
@@ -32,28 +31,23 @@
 #else
 #  include "ansi_stdlib.h"
 #endif /* HAVE_STDLIB_H */
+
 #if defined (HAVE_UNISTD_H)
 #  ifdef _MINIX
 #    include <sys/types.h>
 #  endif
 #  include <unistd.h>
 #endif
-#if defined (HAVE_STRING_H)
-#  include <string.h>
-#else
-#  include <strings.h>
-#endif /* !HAVE_STRING_H */
 
 #include "history.h"
 #include "histlib.h"
 
-/* Variables imported from other history library files. */
-extern int history_offset;
-
 /* The list of alternate characters that can delimit a history search
    string. */
 char *history_search_delimiter_chars = (char *)NULL;
 
+static int history_search_internal PARAMS((const char *, int, int));
+
 /* Search the history for STRING, starting at history_offset.
    If DIRECTION < 0, then the search is through previous entries, else
    through subsequent.  If ANCHORED is non-zero, the string must
@@ -66,7 +60,7 @@ char *history_search_delimiter_chars = (char *)NULL;
 
 static int
 history_search_internal (string, direction, anchored)
-     char *string;
+     const char *string;
      int direction, anchored;
 {
   register int i, reverse;
@@ -82,11 +76,11 @@ history_search_internal (string, direction, anchored)
   if (string == 0 || *string == '\0')
     return (-1);
 
-  if (!history_length || ((i == history_length) && !reverse))
+  if (!history_length || ((i >= history_length) && !reverse))
     return (-1);
 
-  if (reverse && (i == history_length))
-    i--;
+  if (reverse && (i >= history_length))
+    i = history_length - 1;
 
 #define NEXT_LINE() do { if (reverse) i--; else i++; } while (0)
 
@@ -162,7 +156,7 @@ history_search_internal (string, direction, anchored)
 /* Do a non-anchored search for STRING through the history in DIRECTION. */
 int
 history_search (string, direction)
-     char *string;
+     const char *string;
      int direction;
 {
   return (history_search_internal (string, direction, NON_ANCHORED_SEARCH));
@@ -171,7 +165,7 @@ history_search (string, direction)
 /* Do an anchored search for string through the history in DIRECTION. */
 int
 history_search_prefix (string, direction)
-     char *string;
+     const char *string;
      int direction;
 {
   return (history_search_internal (string, direction, ANCHORED_SEARCH));
@@ -182,7 +176,7 @@ history_search_prefix (string, direction)
    which point to begin searching. */
 int
 history_search_pos (string, dir, pos)
-     char *string;
+     const char *string;
      int dir, pos;
 {
   int ret, old;