Import of readline 4.3.

Non-readline modified files:

src/gdb/ChangeLog src/gdb/defs.h src/gdb/cli/cli-cmds.c
src/gdb/cli/cli-setshow.c src/gdb/tui/ChangeLog
src/gdb/tui/tuiWin.c

In readline directory:

        * compat.c, mbutil.c, misc.c, rlmbutil.h, rltypedefs.h,
        text.c, doc/history.0, doc/history.3, support/wcwidth.c,
        examples/readlinebuf.h, examples/rlcat.c: New files.

        * CHANGELOG, CHANGES, INSTALL,  MANIFEST, Makefile.in, README,
        aclocal.m4, ansi_stdlib.h, bind.c, callback.c, chardefs.h,
        complete.c, config.h.in, configure, configure.in, display.c,
        emacs_keymap.c, funmap.c, histexpand.c, histfile.c, histlib.h,
        history.c, history.h, histsearch.c, input.c, isearch.c,
        keymaps.c, keymaps.h, kill.c, macro.c, nls.c, parens.c,
        posixdir.h, readline.c, readline.h, rlconf.h, rldefs.h,
        rlprivate.h, rlshell.h, rlstdc.h, rltty.c, savestring.c,
        search.c, shell.c, signals.c, terminal.c, tilde.c, tilde.h,
        undo.c, util.c, vi_keymap.c, vi_mode.c, xmalloc.c, xmalloc.h,
        doc/Makefile.in, doc/hist.texinfo, doc/hstech.texinfo,
        doc/hsuser.texinfo, doc/manvers.texinfo, doc/readline.3,
        doc/rlman.texinfo, doc/rltech.texinfo, doc/rluser.texinfo
        doc/rluserman.texinfo, doc/texi2dvi, doc/texi2html,
        shlib/Makefile.in, support/install.sh, support/mkdirs,
        support/mkdist, support/shlib-install, support/shobj-conf,
        examples/Inputrc, examples/Makefile.in, examples/fileman.c,
        examples/histexamp.c, examples/manexamp.c, examples/rl.c,
        examples/rlfe.c, examples/rltest.c, examples/rlversion.c:
        Modified files.

1 files changed, 22 insertions, 29 deletions

diff --git a/readline/history.c b/readline/history.c
index 400f18bc602..4242f33efe1 100644
--- a/readline/history.c
+++ b/readline/history.c
@@ -44,12 +44,6 @@
 #  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"
 
@@ -71,9 +65,13 @@ static HIST_ENTRY **the_history = (HIST_ENTRY **)NULL;
    history that we save. */
 static int history_stifled;
 
+/* The current number of slots allocated to the input_history. */
+static int history_size;
+
 /* If HISTORY_STIFLED is non-zero, then this is the maximum number of
    entries to remember. */
-int max_input_history;
+int history_max_entries;
+int max_input_history;	/* backwards compatibility */
 
 /* The current location of the interactive history pointer.  Just makes
    life easier for outside callers. */
@@ -82,9 +80,6 @@ int history_offset;
 /* The number of strings currently stored in the history list. */
 int history_length;
 
-/* The current number of slots allocated to the input_history. */
-static int history_size;
-
 /* The logical `base' of the history array.  It defaults to 1. */
 int history_base = 1;
 
@@ -134,9 +129,7 @@ history_total_bytes ()
 {
   register int i, result;
 
-  result = 0;
-
-  for (i = 0; the_history && the_history[i]; i++)
+  for (i = result = 0; the_history && the_history[i]; i++)
     result += strlen (the_history[i]->line);
 
   return (result);
@@ -217,16 +210,16 @@ history_get (offset)
    is  set to NULL. */
 void
 add_history (string)
-     char *string;
+     const char *string;
 {
   HIST_ENTRY *temp;
 
-  if (history_stifled && (history_length == max_input_history))
+  if (history_stifled && (history_length == history_max_entries))
     {
       register int i;
 
       /* If the history is stifled, and history_length is zero,
-	 and it equals max_input_history, we don't save items. */
+	 and it equals history_max_entries, we don't save items. */
       if (history_length == 0)
 	return;
 
@@ -277,15 +270,15 @@ add_history (string)
 HIST_ENTRY *
 replace_history_entry (which, line, data)
      int which;
-     char *line;
+     const char *line;
      histdata_t data;
 {
-  HIST_ENTRY *temp = (HIST_ENTRY *)xmalloc (sizeof (HIST_ENTRY));
-  HIST_ENTRY *old_value;
+  HIST_ENTRY *temp, *old_value;
 
   if (which >= history_length)
     return ((HIST_ENTRY *)NULL);
 
+  temp = (HIST_ENTRY *)xmalloc (sizeof (HIST_ENTRY));
   old_value = the_history[which];
 
   temp->line = savestring (line);
@@ -303,12 +296,12 @@ remove_history (which)
      int which;
 {
   HIST_ENTRY *return_value;
+  register int i;
 
   if (which >= history_length || !history_length)
     return_value = (HIST_ENTRY *)NULL;
   else
     {
-      register int i;
       return_value = the_history[which];
 
       for (i = which; i < history_length; i++)
@@ -325,13 +318,13 @@ void
 stifle_history (max)
      int max;
 {
+  register int i, j;
+
   if (max < 0)
     max = 0;
 
   if (history_length > max)
     {
-      register int i, j;
-
       /* This loses because we cannot free the data. */
       for (i = 0, j = history_length - max; i < j; i++)
 	{
@@ -347,22 +340,22 @@ stifle_history (max)
     }
 
   history_stifled = 1;
-  max_input_history = max;
+  max_input_history = history_max_entries = max;
 }
 
-/* Stop stifling the history.  This returns the previous amount the 
-   history was stifled by.  The value is positive if the history was
-   stifled,  negative if it wasn't. */
+/* Stop stifling the history.  This returns the previous maximum
+   number of history entries.  The value is positive if the history
+   was stifled,  negative if it wasn't. */
 int
 unstifle_history ()
 {
   if (history_stifled)
     {
       history_stifled = 0;
-      return (-max_input_history);
+      return (history_max_entries);
     }
-
-  return (max_input_history);
+  else
+    return (-history_max_entries);
 }
 
 int