Index: patches/bash-4.2-branch_update-2.patch
===================================================================
--- patches/bash-4.2-branch_update-2.patch	(revision f1873f3792e9d4bf35bb53d6fdc8ad74a8245214)
+++ 	(revision )
@@ -1,487 +1,0 @@
-Submitted By: Jonathan Norman (jonathan at bluesquarelinux.co.uk)
-Date: 2011-05-16
-Initial Package Version: 4.2
-Origin: Upstream
-Upstream Status: Applied
-Description: Contains all upstream patches up to 4.2-010
-
-diff -Naur bash-4.2.orig/builtins/fc.def bash-4.2/builtins/fc.def
---- bash-4.2.orig/builtins/fc.def	2010-05-30 22:25:38.000000000 +0000
-+++ bash-4.2/builtins/fc.def	2011-05-16 23:42:00.796961011 +0000
-@@ -304,7 +304,7 @@
-   last_hist = i - rh - hist_last_line_added;
- 
-   /* XXX */
--  if (saved_command_line_count > 0 && i == last_hist && hlist[last_hist] == 0)
-+  if (i == last_hist && hlist[last_hist] == 0)
-     while (last_hist >= 0 && hlist[last_hist] == 0)
-       last_hist--;
-   if (last_hist < 0)
-@@ -475,7 +475,7 @@
-      HIST_ENTRY **hlist;
- {
-   int sign, n, clen, rh;
--  register int i, j;
-+  register int i, j, last_hist;
-   register char *s;
- 
-   sign = 1;
-@@ -495,7 +495,15 @@
-      has been enabled (interactive or not) should use it in the last_hist
-      calculation as if it were on. */
-   rh = remember_on_history || ((subshell_environment & SUBSHELL_COMSUB) && enable_history_list);
--  i -= rh + hist_last_line_added;
-+  last_hist = i - rh - hist_last_line_added;
-+
-+  if (i == last_hist && hlist[last_hist] == 0)
-+    while (last_hist >= 0 && hlist[last_hist] == 0)
-+      last_hist--;
-+  if (last_hist < 0)
-+    return (-1);
-+
-+  i = last_hist;
- 
-   /* No specification defaults to most recent command. */
-   if (command == NULL)
-diff -Naur bash-4.2.orig/builtins/printf.def bash-4.2/builtins/printf.def
---- bash-4.2.orig/builtins/printf.def	2010-11-23 15:02:55.000000000 +0000
-+++ bash-4.2/builtins/printf.def	2011-05-16 23:41:55.617535899 +0000
-@@ -465,6 +465,9 @@
- 		  secs = shell_start_time;	/* roughly $SECONDS */
- 		else
- 		  secs = arg;
-+#if defined (HAVE_TZSET)
-+		sv_tz ("TZ");		/* XXX -- just make sure */
-+#endif
- 		tm = localtime (&secs);
- 		n = strftime (timebuf, sizeof (timebuf), timefmt, tm);
- 		free (timefmt);
-diff -Naur bash-4.2.orig/lib/glob/gmisc.c bash-4.2/lib/glob/gmisc.c
---- bash-4.2.orig/lib/glob/gmisc.c	2011-02-05 21:11:17.000000000 +0000
-+++ bash-4.2/lib/glob/gmisc.c	2011-05-16 23:41:53.037822234 +0000
-@@ -77,8 +77,8 @@
-      wchar_t *wpat;
-      size_t wmax;
- {
--  wchar_t wc, *wbrack;
--  int matlen, t, in_cclass, in_collsym, in_equiv;
-+  wchar_t wc;
-+  int matlen, bracklen, t, in_cclass, in_collsym, in_equiv;
- 
-   if (*wpat == 0)
-     return (0);
-@@ -118,58 +118,80 @@
- 	  break;
- 	case L'[':
- 	  /* scan for ending `]', skipping over embedded [:...:] */
--	  wbrack = wpat;
-+	  bracklen = 1;
- 	  wc = *wpat++;
- 	  do
- 	    {
- 	      if (wc == 0)
- 		{
--	          matlen += wpat - wbrack - 1;	/* incremented below */
--	          break;
-+		  wpat--;			/* back up to NUL */
-+	          matlen += bracklen;
-+	          goto bad_bracket;
- 	        }
- 	      else if (wc == L'\\')
- 		{
--		  wc = *wpat++;
--		  if (*wpat == 0)
--		    break;
-+		  /* *wpat == backslash-escaped character */
-+		  bracklen++;
-+		  /* If the backslash or backslash-escape ends the string,
-+		     bail.  The ++wpat skips over the backslash escape */
-+		  if (*wpat == 0 || *++wpat == 0)
-+		    {
-+		      matlen += bracklen;
-+		      goto bad_bracket;
-+		    }
- 		}
- 	      else if (wc == L'[' && *wpat == L':')	/* character class */
- 		{
- 		  wpat++;
-+		  bracklen++;
- 		  in_cclass = 1;
- 		}
- 	      else if (in_cclass && wc == L':' && *wpat == L']')
- 		{
- 		  wpat++;
-+		  bracklen++;
- 		  in_cclass = 0;
- 		}
- 	      else if (wc == L'[' && *wpat == L'.')	/* collating symbol */
- 		{
- 		  wpat++;
-+		  bracklen++;
- 		  if (*wpat == L']')	/* right bracket can appear as collating symbol */
--		    wpat++;
-+		    {
-+		      wpat++;
-+		      bracklen++;
-+		    }
- 		  in_collsym = 1;
- 		}
- 	      else if (in_collsym && wc == L'.' && *wpat == L']')
- 		{
- 		  wpat++;
-+		  bracklen++;
- 		  in_collsym = 0;
- 		}
- 	      else if (wc == L'[' && *wpat == L'=')	/* equivalence class */
- 		{
- 		  wpat++;
-+		  bracklen++;
- 		  if (*wpat == L']')	/* right bracket can appear as equivalence class */
--		    wpat++;
-+		    {
-+		      wpat++;
-+		      bracklen++;
-+		    }
- 		  in_equiv = 1;
- 		}
- 	      else if (in_equiv && wc == L'=' && *wpat == L']')
- 		{
- 		  wpat++;
-+		  bracklen++;
- 		  in_equiv = 0;
- 		}
-+	      else
-+		bracklen++;
- 	    }
- 	  while ((wc = *wpat++) != L']');
- 	  matlen++;		/* bracket expression can only match one char */
-+bad_bracket:
- 	  break;
- 	}
-     }
-@@ -213,8 +235,8 @@
-      char *pat;
-      size_t max;
- {
--  char c, *brack;
--  int matlen, t, in_cclass, in_collsym, in_equiv;
-+  char c;
-+  int matlen, bracklen, t, in_cclass, in_collsym, in_equiv;
- 
-   if (*pat == 0)
-     return (0);
-@@ -254,58 +276,80 @@
- 	  break;
- 	case '[':
- 	  /* scan for ending `]', skipping over embedded [:...:] */
--	  brack = pat;
-+	  bracklen = 1;
- 	  c = *pat++;
- 	  do
- 	    {
- 	      if (c == 0)
- 		{
--	          matlen += pat - brack - 1;	/* incremented below */
--	          break;
-+		  pat--;			/* back up to NUL */
-+		  matlen += bracklen;
-+		  goto bad_bracket;
- 	        }
- 	      else if (c == '\\')
- 		{
--		  c = *pat++;
--		  if (*pat == 0)
--		    break;
-+		  /* *pat == backslash-escaped character */
-+		  bracklen++;
-+		  /* If the backslash or backslash-escape ends the string,
-+		     bail.  The ++pat skips over the backslash escape */
-+		  if (*pat == 0 || *++pat == 0)
-+		    {
-+		      matlen += bracklen;
-+		      goto bad_bracket;
-+		    }
- 		}
- 	      else if (c == '[' && *pat == ':')	/* character class */
- 		{
- 		  pat++;
-+		  bracklen++;
- 		  in_cclass = 1;
- 		}
- 	      else if (in_cclass && c == ':' && *pat == ']')
- 		{
- 		  pat++;
-+		  bracklen++;
- 		  in_cclass = 0;
- 		}
- 	      else if (c == '[' && *pat == '.')	/* collating symbol */
- 		{
- 		  pat++;
-+		  bracklen++;
- 		  if (*pat == ']')	/* right bracket can appear as collating symbol */
--		    pat++;
-+		    {
-+		      pat++;
-+		      bracklen++;
-+		    }
- 		  in_collsym = 1;
- 		}
- 	      else if (in_collsym && c == '.' && *pat == ']')
- 		{
- 		  pat++;
-+		  bracklen++;
- 		  in_collsym = 0;
- 		}
- 	      else if (c == '[' && *pat == '=')	/* equivalence class */
- 		{
- 		  pat++;
-+		  bracklen++;
- 		  if (*pat == ']')	/* right bracket can appear as equivalence class */
--		    pat++;
-+		    {
-+		      pat++;
-+		      bracklen++;
-+		    }
- 		  in_equiv = 1;
- 		}
- 	      else if (in_equiv && c == '=' && *pat == ']')
- 		{
- 		  pat++;
-+		  bracklen++;
- 		  in_equiv = 0;
- 		}
-+	      else
-+		bracklen++;
- 	    }
- 	  while ((c = *pat++) != ']');
- 	  matlen++;		/* bracket expression can only match one char */
-+bad_bracket:
- 	  break;
- 	}
-     }
-diff -Naur bash-4.2.orig/lib/readline/callback.c bash-4.2/lib/readline/callback.c
---- bash-4.2.orig/lib/readline/callback.c	2010-06-06 16:18:58.000000000 +0000
-+++ bash-4.2/lib/readline/callback.c	2011-05-16 23:41:51.689971838 +0000
-@@ -148,6 +148,9 @@
- 	  eof = _rl_vi_domove_callback (_rl_vimvcxt);
- 	  /* Should handle everything, including cleanup, numeric arguments,
- 	     and turning off RL_STATE_VIMOTION */
-+	  if (RL_ISSTATE (RL_STATE_NUMERICARG) == 0)
-+	    _rl_internal_char_cleanup ();
-+
- 	  return;
- 	}
- #endif
-diff -Naur bash-4.2.orig/lib/readline/vi_mode.c bash-4.2/lib/readline/vi_mode.c
---- bash-4.2.orig/lib/readline/vi_mode.c	2010-11-21 00:51:39.000000000 +0000
-+++ bash-4.2/lib/readline/vi_mode.c	2011-05-16 23:41:51.689971838 +0000
-@@ -1114,7 +1114,7 @@
-       rl_beg_of_line (1, c);
-       _rl_vi_last_motion = c;
-       RL_UNSETSTATE (RL_STATE_VIMOTION);
--      return (0);
-+      return (vidomove_dispatch (m));
-     }
- #if defined (READLINE_CALLBACKS)
-   /* XXX - these need to handle rl_universal_argument bindings */
-diff -Naur bash-4.2.orig/parse.y bash-4.2/parse.y
---- bash-4.2.orig/parse.y	2011-01-02 20:48:11.000000000 +0000
-+++ bash-4.2/parse.y	2011-05-16 23:41:55.613536343 +0000
-@@ -5135,6 +5135,9 @@
- 	    case 'A':
- 	      /* Make the current time/date into a string. */
- 	      (void) time (&the_time);
-+#if defined (HAVE_TZSET)
-+	      sv_tz ("TZ");		/* XXX -- just make sure */
-+#endif
- 	      tm = localtime (&the_time);
- 
- 	      if (c == 'd')
-diff -Naur bash-4.2.orig/patchlevel.h bash-4.2/patchlevel.h
---- bash-4.2.orig/patchlevel.h	2010-06-13 00:14:48.000000000 +0000
-+++ bash-4.2/patchlevel.h	2011-05-16 23:42:02.092817179 +0000
-@@ -25,6 +25,6 @@
-    regexp `^#define[ 	]*PATCHLEVEL', since that's what support/mkversion.sh
-    looks for to find the patch level (for the sccs version string). */
- 
--#define PATCHLEVEL 0
-+#define PATCHLEVEL 10
- 
- #endif /* _PATCHLEVEL_H_ */
-diff -Naur bash-4.2.orig/print_cmd.c bash-4.2/print_cmd.c
---- bash-4.2.orig/print_cmd.c	2010-05-30 22:34:08.000000000 +0000
-+++ bash-4.2/print_cmd.c	2011-05-16 23:42:02.092817179 +0000
-@@ -315,6 +315,7 @@
- 	  cprintf ("( ");
- 	  skip_this_indent++;
- 	  make_command_string_internal (command->value.Subshell->command);
-+	  PRINT_DEFERRED_HEREDOCS ("");
- 	  cprintf (" )");
- 	  break;
- 
-@@ -592,6 +593,7 @@
-   newline ("do\n");
-   indentation += indentation_amount;
-   make_command_string_internal (arith_for_command->action);
-+  PRINT_DEFERRED_HEREDOCS ("");
-   semicolon ();
-   indentation -= indentation_amount;
-   newline ("done");
-@@ -653,6 +655,7 @@
-     }
- 
-   make_command_string_internal (group_command->command);
-+  PRINT_DEFERRED_HEREDOCS ("");
- 
-   if (inside_function_def)
-     {
-diff -Naur bash-4.2.orig/sig.c bash-4.2/sig.c
---- bash-4.2.orig/sig.c	2010-11-23 13:21:22.000000000 +0000
-+++ bash-4.2/sig.c	2011-05-16 23:41:59.501104844 +0000
-@@ -46,6 +46,7 @@
- 
- #if defined (READLINE)
- #  include "bashline.h"
-+#  include <readline/readline.h>
- #endif
- 
- #if defined (HISTORY)
-@@ -62,6 +63,7 @@
- #if defined (HISTORY)
- extern int history_lines_this_session;
- #endif
-+extern int no_line_editing;
- 
- extern void initialize_siglist ();
- 
-@@ -505,7 +507,10 @@
-     {
- #if defined (HISTORY)
-       /* XXX - will inhibit history file being written */
--      history_lines_this_session = 0;
-+#  if defined (READLINE)
-+      if (interactive_shell == 0 || interactive == 0 || (sig != SIGHUP && sig != SIGTERM) || no_line_editing || (RL_ISSTATE (RL_STATE_READCMD) == 0))
-+#  endif
-+        history_lines_this_session = 0;
- #endif
-       terminate_immediately = 0;
-       termsig_handler (sig);
-diff -Naur bash-4.2.orig/subst.c bash-4.2/subst.c
---- bash-4.2.orig/subst.c	2011-01-02 21:12:51.000000000 +0000
-+++ bash-4.2/subst.c	2011-05-16 23:41:58.205248678 +0000
-@@ -1379,10 +1379,12 @@
-   slen = strlen (string + *sindex) + *sindex;
- 
-   /* The handling of dolbrace_state needs to agree with the code in parse.y:
--     parse_matched_pair() */
--  dolbrace_state = 0;
--  if (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))
--    dolbrace_state = (flags & SX_POSIXEXP) ? DOLBRACE_QUOTE : DOLBRACE_PARAM;
-+     parse_matched_pair().  The different initial value is to handle the
-+     case where this function is called to parse the word in
-+     ${param op word} (SX_WORD). */
-+  dolbrace_state = (flags & SX_WORD) ? DOLBRACE_WORD : DOLBRACE_PARAM;
-+  if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && (flags & SX_POSIXEXP))
-+    dolbrace_state = DOLBRACE_QUOTE;
- 
-   i = *sindex;
-   while (c = string[i])
-@@ -3371,7 +3373,7 @@
-   if (string == 0 || *string == '\0')
-     return (WORD_LIST *)NULL;
- 
--  td.flags = 0;
-+  td.flags = W_NOSPLIT2;		/* no splitting, remove "" and '' */
-   td.word = string;
-   tresult = call_expand_word_internal (&td, quoted, 1, dollar_at_p, has_dollar_at);
-   return (tresult);
-@@ -4607,6 +4609,7 @@
-   if (ifs_firstc == 0)
- #endif
-     word->flags |= W_NOSPLIT;
-+  word->flags |= W_NOSPLIT2;
-   result = call_expand_word_internal (word, quoted, 0, (int *)NULL, (int *)NULL);
-   expand_no_split_dollar_star = 0;
- 
-@@ -7176,7 +7179,7 @@
-     {
-       /* Extract the contents of the ${ ... } expansion
- 	 according to the Posix.2 rules. */
--      value = extract_dollar_brace_string (string, &sindex, quoted, (c == '%' || c == '#') ? SX_POSIXEXP : 0);
-+      value = extract_dollar_brace_string (string, &sindex, quoted, (c == '%' || c == '#' || c =='/' || c == '^' || c == ',' || c ==':') ? SX_POSIXEXP|SX_WORD : SX_WORD);
-       if (string[sindex] == RBRACE)
- 	sindex++;
-       else
-diff -Naur bash-4.2.orig/subst.h bash-4.2/subst.h
---- bash-4.2.orig/subst.h	2010-12-03 01:21:29.000000000 +0000
-+++ bash-4.2/subst.h	2011-05-16 23:41:50.378117447 +0000
-@@ -56,6 +56,7 @@
- #define SX_NOLONGJMP	0x0040	/* don't longjmp on fatal error */
- #define SX_ARITHSUB	0x0080	/* extracting $(( ... )) (currently unused) */
- #define SX_POSIXEXP	0x0100	/* extracting new Posix pattern removal expansions in extract_dollar_brace_string */
-+#define SX_WORD		0x0200	/* extracting word in ${param op word} */
- 
- /* Remove backslashes which are quoting backquotes from STRING.  Modifies
-    STRING, and returns a pointer to it. */
-diff -Naur bash-4.2.orig/variables.c bash-4.2/variables.c
---- bash-4.2.orig/variables.c	2011-01-25 01:07:48.000000000 +0000
-+++ bash-4.2/variables.c	2011-05-16 23:41:56.917391622 +0000
-@@ -3653,6 +3653,22 @@
-   return n;
- }
- 
-+int
-+chkexport (name)
-+     char *name;
-+{
-+  SHELL_VAR *v;
-+
-+  v = find_variable (name);
-+  if (v && exported_p (v))
-+    {
-+      array_needs_making = 1;
-+      maybe_make_export_env ();
-+      return 1;
-+    }
-+  return 0;
-+}
-+
- void
- maybe_make_export_env ()
- {
-@@ -4214,7 +4230,7 @@
-   { "TEXTDOMAIN", sv_locale },
-   { "TEXTDOMAINDIR", sv_locale },
- 
--#if defined (HAVE_TZSET) && defined (PROMPT_STRING_DECODE)
-+#if defined (HAVE_TZSET)
-   { "TZ", sv_tz },
- #endif
- 
-@@ -4558,12 +4574,13 @@
- }
- #endif /* HISTORY */
- 
--#if defined (HAVE_TZSET) && defined (PROMPT_STRING_DECODE)
-+#if defined (HAVE_TZSET)
- void
- sv_tz (name)
-      char *name;
- {
--  tzset ();
-+  if (chkexport (name))
-+    tzset ();
- }
- #endif
- 
-diff -Naur bash-4.2.orig/variables.h bash-4.2/variables.h
---- bash-4.2.orig/variables.h	2010-12-03 01:22:01.000000000 +0000
-+++ bash-4.2/variables.h	2011-05-16 23:41:55.613536343 +0000
-@@ -313,6 +313,7 @@
- 
- extern void sort_variables __P((SHELL_VAR **));
- 
-+extern int chkexport __P((char *));
- extern void maybe_make_export_env __P((void));
- extern void update_export_env_inplace __P((char *, int, char *));
- extern void put_command_name_into_env __P((char *));
Index: patches/bash-4.2-branch_update-3.patch
===================================================================
--- patches/bash-4.2-branch_update-3.patch	(revision d01d386946e046bbf61ef0d38693619365c73d89)
+++ patches/bash-4.2-branch_update-3.patch	(revision d01d386946e046bbf61ef0d38693619365c73d89)
@@ -0,0 +1,780 @@
+Submitted By: Jonathan Norman (jonathan at bluesquarelinux dot co dot uk)
+Date: 15-02-2012
+Initial Package Version: 4.2
+Origin: Upstream
+Upstream Status: Applied
+Description: Contains all upstream patches up to 4.2-020
+
+diff -Naur bash-4.2.orig/assoc.c bash-4.2/assoc.c
+--- bash-4.2.orig/assoc.c	2009-08-06 00:19:40.000000000 +0000
++++ bash-4.2/assoc.c	2012-02-15 17:04:56.844640185 +0000
+@@ -77,6 +77,11 @@
+   b = hash_search (key, hash, HASH_CREATE);
+   if (b == 0)
+     return -1;
++  /* If we are overwriting an existing element's value, we're not going to
++     use the key.  Nothing in the array assignment code path frees the key
++     string, so we can free it here to avoid a memory leak. */
++  if (b->key != key)
++    free (key);
+   FREE (b->data);
+   b->data = value ? savestring (value) : (char *)0;
+   return (0);
+diff -Naur bash-4.2.orig/builtins/declare.def bash-4.2/builtins/declare.def
+--- bash-4.2.orig/builtins/declare.def	2010-05-30 22:25:21.000000000 +0000
++++ bash-4.2/builtins/declare.def	2012-02-15 17:05:08.352946800 +0000
+@@ -513,6 +513,11 @@
+ 	      *subscript_start = '[';	/* ] */
+ 	      var = assign_array_element (name, value, 0);	/* XXX - not aflags */
+ 	      *subscript_start = '\0';
++	      if (var == 0)	/* some kind of assignment error */
++		{
++		  assign_error++;
++		  NEXT_VARIABLE ();
++		}
+ 	    }
+ 	  else if (simple_array_assign)
+ 	    {
+diff -Naur bash-4.2.orig/builtins/fc.def bash-4.2/builtins/fc.def
+--- bash-4.2.orig/builtins/fc.def	2010-05-30 22:25:38.000000000 +0000
++++ bash-4.2/builtins/fc.def	2012-02-15 17:04:54.028565156 +0000
+@@ -304,7 +304,7 @@
+   last_hist = i - rh - hist_last_line_added;
+ 
+   /* XXX */
+-  if (saved_command_line_count > 0 && i == last_hist && hlist[last_hist] == 0)
++  if (i == last_hist && hlist[last_hist] == 0)
+     while (last_hist >= 0 && hlist[last_hist] == 0)
+       last_hist--;
+   if (last_hist < 0)
+@@ -475,7 +475,7 @@
+      HIST_ENTRY **hlist;
+ {
+   int sign, n, clen, rh;
+-  register int i, j;
++  register int i, j, last_hist;
+   register char *s;
+ 
+   sign = 1;
+@@ -495,7 +495,15 @@
+      has been enabled (interactive or not) should use it in the last_hist
+      calculation as if it were on. */
+   rh = remember_on_history || ((subshell_environment & SUBSHELL_COMSUB) && enable_history_list);
+-  i -= rh + hist_last_line_added;
++  last_hist = i - rh - hist_last_line_added;
++
++  if (i == last_hist && hlist[last_hist] == 0)
++    while (last_hist >= 0 && hlist[last_hist] == 0)
++      last_hist--;
++  if (last_hist < 0)
++    return (-1);
++
++  i = last_hist;
+ 
+   /* No specification defaults to most recent command. */
+   if (command == NULL)
+diff -Naur bash-4.2.orig/builtins/printf.def bash-4.2/builtins/printf.def
+--- bash-4.2.orig/builtins/printf.def	2010-11-23 15:02:55.000000000 +0000
++++ bash-4.2/builtins/printf.def	2012-02-15 17:04:48.484417444 +0000
+@@ -465,6 +465,9 @@
+ 		  secs = shell_start_time;	/* roughly $SECONDS */
+ 		else
+ 		  secs = arg;
++#if defined (HAVE_TZSET)
++		sv_tz ("TZ");		/* XXX -- just make sure */
++#endif
+ 		tm = localtime (&secs);
+ 		n = strftime (timebuf, sizeof (timebuf), timefmt, tm);
+ 		free (timefmt);
+diff -Naur bash-4.2.orig/builtins/read.def bash-4.2/builtins/read.def
+--- bash-4.2.orig/builtins/read.def	2011-01-04 16:43:36.000000000 +0000
++++ bash-4.2/builtins/read.def	2012-02-15 17:05:05.540871876 +0000
+@@ -642,6 +642,12 @@
+ 	  xfree (input_string);
+ 	  return EXECUTION_FAILURE;	/* readonly or noassign */
+ 	}
++      if (assoc_p (var))
++	{
++          builtin_error (_("%s: cannot convert associative to indexed array"), arrayname);
++	  xfree (input_string);
++	  return EXECUTION_FAILURE;	/* existing associative array */
++	}
+       array_flush (array_cell (var));
+ 
+       alist = list_string (input_string, ifs_chars, 0);
+diff -Naur bash-4.2.orig/execute_cmd.c bash-4.2/execute_cmd.c
+--- bash-4.2.orig/execute_cmd.c	2011-02-09 22:32:25.000000000 +0000
++++ bash-4.2/execute_cmd.c	2012-02-15 17:05:06.964909819 +0000
+@@ -2196,6 +2196,7 @@
+   if (ignore_return && cmd)
+     cmd->flags |= CMD_IGNORE_RETURN;
+ 
++#if defined (JOB_CONTROL)
+   lastpipe_flag = 0;
+   begin_unwind_frame ("lastpipe-exec");
+   lstdin = -1;
+@@ -2215,15 +2216,19 @@
+ 	  lastpipe_jid = stop_pipeline (0, (COMMAND *)NULL);	/* XXX */
+ 	  add_unwind_protect (lastpipe_cleanup, lastpipe_jid);
+ 	}
+-      cmd->flags |= CMD_LASTPIPE;
++      if (cmd)
++	cmd->flags |= CMD_LASTPIPE;
+     }	  
+   if (prev >= 0)
+     add_unwind_protect (close, prev);
++#endif
+ 
+   exec_result = execute_command_internal (cmd, asynchronous, prev, pipe_out, fds_to_close);
+ 
++#if defined (JOB_CONTROL)
+   if (lstdin > 0)
+     restore_stdin (lstdin);
++#endif
+ 
+   if (prev >= 0)
+     close (prev);
+diff -Naur bash-4.2.orig/expr.c bash-4.2/expr.c
+--- bash-4.2.orig/expr.c	2010-12-21 16:12:13.000000000 +0000
++++ bash-4.2/expr.c	2012-02-15 17:05:02.424788857 +0000
+@@ -476,19 +476,23 @@
+ 
+       if (special)
+ 	{
++	  if ((op == DIV || op == MOD) && value == 0)
++	    {
++	      if (noeval == 0)
++		evalerror (_("division by 0"));
++	      else
++	        value = 1;
++	    }
++
+ 	  switch (op)
+ 	    {
+ 	    case MUL:
+ 	      lvalue *= value;
+ 	      break;
+ 	    case DIV:
+-	      if (value == 0)
+-		evalerror (_("division by 0"));
+ 	      lvalue /= value;
+ 	      break;
+ 	    case MOD:
+-	      if (value == 0)
+-		evalerror (_("division by 0"));
+ 	      lvalue %= value;
+ 	      break;
+ 	    case PLUS:
+@@ -804,7 +808,12 @@
+       val2 = exppower ();
+ 
+       if (((op == DIV) || (op == MOD)) && (val2 == 0))
+-	evalerror (_("division by 0"));
++	{
++	  if (noeval == 0)
++	    evalerror (_("division by 0"));
++	  else
++	    val2 = 1;
++	}
+ 
+       if (op == MUL)
+ 	val1 *= val2;
+diff -Naur bash-4.2.orig/lib/glob/gmisc.c bash-4.2/lib/glob/gmisc.c
+--- bash-4.2.orig/lib/glob/gmisc.c	2011-02-05 21:11:17.000000000 +0000
++++ bash-4.2/lib/glob/gmisc.c	2012-02-15 17:04:45.660342203 +0000
+@@ -77,8 +77,8 @@
+      wchar_t *wpat;
+      size_t wmax;
+ {
+-  wchar_t wc, *wbrack;
+-  int matlen, t, in_cclass, in_collsym, in_equiv;
++  wchar_t wc;
++  int matlen, bracklen, t, in_cclass, in_collsym, in_equiv;
+ 
+   if (*wpat == 0)
+     return (0);
+@@ -118,58 +118,80 @@
+ 	  break;
+ 	case L'[':
+ 	  /* scan for ending `]', skipping over embedded [:...:] */
+-	  wbrack = wpat;
++	  bracklen = 1;
+ 	  wc = *wpat++;
+ 	  do
+ 	    {
+ 	      if (wc == 0)
+ 		{
+-	          matlen += wpat - wbrack - 1;	/* incremented below */
+-	          break;
++		  wpat--;			/* back up to NUL */
++	          matlen += bracklen;
++	          goto bad_bracket;
+ 	        }
+ 	      else if (wc == L'\\')
+ 		{
+-		  wc = *wpat++;
+-		  if (*wpat == 0)
+-		    break;
++		  /* *wpat == backslash-escaped character */
++		  bracklen++;
++		  /* If the backslash or backslash-escape ends the string,
++		     bail.  The ++wpat skips over the backslash escape */
++		  if (*wpat == 0 || *++wpat == 0)
++		    {
++		      matlen += bracklen;
++		      goto bad_bracket;
++		    }
+ 		}
+ 	      else if (wc == L'[' && *wpat == L':')	/* character class */
+ 		{
+ 		  wpat++;
++		  bracklen++;
+ 		  in_cclass = 1;
+ 		}
+ 	      else if (in_cclass && wc == L':' && *wpat == L']')
+ 		{
+ 		  wpat++;
++		  bracklen++;
+ 		  in_cclass = 0;
+ 		}
+ 	      else if (wc == L'[' && *wpat == L'.')	/* collating symbol */
+ 		{
+ 		  wpat++;
++		  bracklen++;
+ 		  if (*wpat == L']')	/* right bracket can appear as collating symbol */
+-		    wpat++;
++		    {
++		      wpat++;
++		      bracklen++;
++		    }
+ 		  in_collsym = 1;
+ 		}
+ 	      else if (in_collsym && wc == L'.' && *wpat == L']')
+ 		{
+ 		  wpat++;
++		  bracklen++;
+ 		  in_collsym = 0;
+ 		}
+ 	      else if (wc == L'[' && *wpat == L'=')	/* equivalence class */
+ 		{
+ 		  wpat++;
++		  bracklen++;
+ 		  if (*wpat == L']')	/* right bracket can appear as equivalence class */
+-		    wpat++;
++		    {
++		      wpat++;
++		      bracklen++;
++		    }
+ 		  in_equiv = 1;
+ 		}
+ 	      else if (in_equiv && wc == L'=' && *wpat == L']')
+ 		{
+ 		  wpat++;
++		  bracklen++;
+ 		  in_equiv = 0;
+ 		}
++	      else
++		bracklen++;
+ 	    }
+ 	  while ((wc = *wpat++) != L']');
+ 	  matlen++;		/* bracket expression can only match one char */
++bad_bracket:
+ 	  break;
+ 	}
+     }
+@@ -213,8 +235,8 @@
+      char *pat;
+      size_t max;
+ {
+-  char c, *brack;
+-  int matlen, t, in_cclass, in_collsym, in_equiv;
++  char c;
++  int matlen, bracklen, t, in_cclass, in_collsym, in_equiv;
+ 
+   if (*pat == 0)
+     return (0);
+@@ -254,58 +276,80 @@
+ 	  break;
+ 	case '[':
+ 	  /* scan for ending `]', skipping over embedded [:...:] */
+-	  brack = pat;
++	  bracklen = 1;
+ 	  c = *pat++;
+ 	  do
+ 	    {
+ 	      if (c == 0)
+ 		{
+-	          matlen += pat - brack - 1;	/* incremented below */
+-	          break;
++		  pat--;			/* back up to NUL */
++		  matlen += bracklen;
++		  goto bad_bracket;
+ 	        }
+ 	      else if (c == '\\')
+ 		{
+-		  c = *pat++;
+-		  if (*pat == 0)
+-		    break;
++		  /* *pat == backslash-escaped character */
++		  bracklen++;
++		  /* If the backslash or backslash-escape ends the string,
++		     bail.  The ++pat skips over the backslash escape */
++		  if (*pat == 0 || *++pat == 0)
++		    {
++		      matlen += bracklen;
++		      goto bad_bracket;
++		    }
+ 		}
+ 	      else if (c == '[' && *pat == ':')	/* character class */
+ 		{
+ 		  pat++;
++		  bracklen++;
+ 		  in_cclass = 1;
+ 		}
+ 	      else if (in_cclass && c == ':' && *pat == ']')
+ 		{
+ 		  pat++;
++		  bracklen++;
+ 		  in_cclass = 0;
+ 		}
+ 	      else if (c == '[' && *pat == '.')	/* collating symbol */
+ 		{
+ 		  pat++;
++		  bracklen++;
+ 		  if (*pat == ']')	/* right bracket can appear as collating symbol */
+-		    pat++;
++		    {
++		      pat++;
++		      bracklen++;
++		    }
+ 		  in_collsym = 1;
+ 		}
+ 	      else if (in_collsym && c == '.' && *pat == ']')
+ 		{
+ 		  pat++;
++		  bracklen++;
+ 		  in_collsym = 0;
+ 		}
+ 	      else if (c == '[' && *pat == '=')	/* equivalence class */
+ 		{
+ 		  pat++;
++		  bracklen++;
+ 		  if (*pat == ']')	/* right bracket can appear as equivalence class */
+-		    pat++;
++		    {
++		      pat++;
++		      bracklen++;
++		    }
+ 		  in_equiv = 1;
+ 		}
+ 	      else if (in_equiv && c == '=' && *pat == ']')
+ 		{
+ 		  pat++;
++		  bracklen++;
+ 		  in_equiv = 0;
+ 		}
++	      else
++		bracklen++;
+ 	    }
+ 	  while ((c = *pat++) != ']');
+ 	  matlen++;		/* bracket expression can only match one char */
++bad_bracket:
+ 	  break;
+ 	}
+     }
+diff -Naur bash-4.2.orig/lib/readline/callback.c bash-4.2/lib/readline/callback.c
+--- bash-4.2.orig/lib/readline/callback.c	2010-06-06 16:18:58.000000000 +0000
++++ bash-4.2/lib/readline/callback.c	2012-02-15 17:04:43.812292965 +0000
+@@ -148,6 +148,9 @@
+ 	  eof = _rl_vi_domove_callback (_rl_vimvcxt);
+ 	  /* Should handle everything, including cleanup, numeric arguments,
+ 	     and turning off RL_STATE_VIMOTION */
++	  if (RL_ISSTATE (RL_STATE_NUMERICARG) == 0)
++	    _rl_internal_char_cleanup ();
++
+ 	  return;
+ 	}
+ #endif
+diff -Naur bash-4.2.orig/lib/readline/vi_mode.c bash-4.2/lib/readline/vi_mode.c
+--- bash-4.2.orig/lib/readline/vi_mode.c	2010-11-21 00:51:39.000000000 +0000
++++ bash-4.2/lib/readline/vi_mode.c	2012-02-15 17:04:43.812292965 +0000
+@@ -1114,7 +1114,7 @@
+       rl_beg_of_line (1, c);
+       _rl_vi_last_motion = c;
+       RL_UNSETSTATE (RL_STATE_VIMOTION);
+-      return (0);
++      return (vidomove_dispatch (m));
+     }
+ #if defined (READLINE_CALLBACKS)
+   /* XXX - these need to handle rl_universal_argument bindings */
+diff -Naur bash-4.2.orig/parse.y bash-4.2/parse.y
+--- bash-4.2.orig/parse.y	2011-01-02 20:48:11.000000000 +0000
++++ bash-4.2/parse.y	2012-02-15 17:05:04.008831060 +0000
+@@ -2499,7 +2499,7 @@
+ 	 We do this only if it is time to do so. Notice that only here
+ 	 is the mail alarm reset; nothing takes place in check_mail ()
+ 	 except the checking of mail.  Please don't change this. */
+-      if (prompt_is_ps1 && time_to_check_mail ())
++      if (prompt_is_ps1 && parse_and_execute_level == 0 && time_to_check_mail ())
+ 	{
+ 	  check_mail ();
+ 	  reset_mail_timer ();
+@@ -3842,6 +3842,7 @@
+      int flags;
+ {
+   sh_parser_state_t ps;
++  sh_input_line_state_t ls;
+   int orig_ind, nc, sflags;
+   char *ret, *s, *ep, *ostring;
+ 
+@@ -3849,10 +3850,12 @@
+   orig_ind = *indp;
+   ostring = string;
+ 
++/*itrace("xparse_dolparen: size = %d shell_input_line = `%s'", shell_input_line_size, shell_input_line);*/
+   sflags = SEVAL_NONINT|SEVAL_NOHIST|SEVAL_NOFREE;
+   if (flags & SX_NOLONGJMP)
+     sflags |= SEVAL_NOLONGJMP;
+   save_parser_state (&ps);
++  save_input_line_state (&ls);
+ 
+   /*(*/
+   parser_state |= PST_CMDSUBST|PST_EOFTOKEN;	/* allow instant ')' */ /*(*/
+@@ -3861,6 +3864,8 @@
+ 
+   restore_parser_state (&ps);
+   reset_parser ();
++  /* reset_parser clears shell_input_line and associated variables */
++  restore_input_line_state (&ls);
+   if (interactive)
+     token_to_read = 0;
+ 
+@@ -5135,6 +5140,9 @@
+ 	    case 'A':
+ 	      /* Make the current time/date into a string. */
+ 	      (void) time (&the_time);
++#if defined (HAVE_TZSET)
++	      sv_tz ("TZ");		/* XXX -- just make sure */
++#endif
+ 	      tm = localtime (&the_time);
+ 
+ 	      if (c == 'd')
+@@ -5905,6 +5913,12 @@
+   ps->expand_aliases = expand_aliases;
+   ps->echo_input_at_read = echo_input_at_read;
+ 
++  ps->token = token;
++  ps->token_buffer_size = token_buffer_size;
++  /* Force reallocation on next call to read_token_word */
++  token = 0;
++  token_buffer_size = 0;
++
+   return (ps);
+ }
+ 
+@@ -5946,6 +5960,42 @@
+ 
+   expand_aliases = ps->expand_aliases;
+   echo_input_at_read = ps->echo_input_at_read;
++
++  FREE (token);
++  token = ps->token;
++  token_buffer_size = ps->token_buffer_size;
++}
++
++sh_input_line_state_t *
++save_input_line_state (ls)
++     sh_input_line_state_t *ls;
++{
++  if (ls == 0)
++    ls = (sh_input_line_state_t *)xmalloc (sizeof (sh_input_line_state_t));
++  if (ls == 0)
++    return ((sh_input_line_state_t *)NULL);
++
++  ls->input_line = shell_input_line;
++  ls->input_line_size = shell_input_line_size;
++  ls->input_line_len = shell_input_line_len;
++  ls->input_line_index = shell_input_line_index;
++
++  /* force reallocation */
++  shell_input_line = 0;
++  shell_input_line_size = shell_input_line_len = shell_input_line_index = 0;
++}
++
++void
++restore_input_line_state (ls)
++     sh_input_line_state_t *ls;
++{
++  FREE (shell_input_line);
++  shell_input_line = ls->input_line;
++  shell_input_line_size = ls->input_line_size;
++  shell_input_line_len = ls->input_line_len;
++  shell_input_line_index = ls->input_line_index;
++
++  set_line_mbstate ();
+ }
+ 
+ /************************************************
+diff -Naur bash-4.2.orig/patchlevel.h bash-4.2/patchlevel.h
+--- bash-4.2.orig/patchlevel.h	2010-06-13 00:14:48.000000000 +0000
++++ bash-4.2/patchlevel.h	2012-02-15 17:05:09.844986552 +0000
+@@ -25,6 +25,6 @@
+    regexp `^#define[ 	]*PATCHLEVEL', since that's what support/mkversion.sh
+    looks for to find the patch level (for the sccs version string). */
+ 
+-#define PATCHLEVEL 0
++#define PATCHLEVEL 20
+ 
+ #endif /* _PATCHLEVEL_H_ */
+diff -Naur bash-4.2.orig/pathexp.c bash-4.2/pathexp.c
+--- bash-4.2.orig/pathexp.c	2010-08-14 03:21:57.000000000 +0000
++++ bash-4.2/pathexp.c	2012-02-15 17:05:01.036751874 +0000
+@@ -196,7 +196,7 @@
+ 	{
+ 	  if ((qflags & QGLOB_FILENAME) && pathname[i+1] == '/')
+ 	    continue;
+-	  if ((qflags & QGLOB_REGEXP) && ere_char (pathname[i+1]) == 0)
++	  if (pathname[i+1] != CTLESC && (qflags & QGLOB_REGEXP) && ere_char (pathname[i+1]) == 0)
+ 	    continue;
+ 	  temp[j++] = '\\';
+ 	  i++;
+diff -Naur bash-4.2.orig/print_cmd.c bash-4.2/print_cmd.c
+--- bash-4.2.orig/print_cmd.c	2010-05-30 22:34:08.000000000 +0000
++++ bash-4.2/print_cmd.c	2012-02-15 17:04:55.440602777 +0000
+@@ -315,6 +315,7 @@
+ 	  cprintf ("( ");
+ 	  skip_this_indent++;
+ 	  make_command_string_internal (command->value.Subshell->command);
++	  PRINT_DEFERRED_HEREDOCS ("");
+ 	  cprintf (" )");
+ 	  break;
+ 
+@@ -592,6 +593,7 @@
+   newline ("do\n");
+   indentation += indentation_amount;
+   make_command_string_internal (arith_for_command->action);
++  PRINT_DEFERRED_HEREDOCS ("");
+   semicolon ();
+   indentation -= indentation_amount;
+   newline ("done");
+@@ -653,6 +655,7 @@
+     }
+ 
+   make_command_string_internal (group_command->command);
++  PRINT_DEFERRED_HEREDOCS ("");
+ 
+   if (inside_function_def)
+     {
+diff -Naur bash-4.2.orig/shell.h bash-4.2/shell.h
+--- bash-4.2.orig/shell.h	2011-01-07 03:16:55.000000000 +0000
++++ bash-4.2/shell.h	2012-02-15 17:04:58.268678125 +0000
+@@ -136,6 +136,9 @@
+   int parser_state;
+   int *token_state;
+ 
++  char *token;
++  int token_buffer_size;
++
+   /* input line state -- line number saved elsewhere */
+   int input_line_terminator;
+   int eof_encountered;
+@@ -166,6 +169,16 @@
+   
+ } sh_parser_state_t;
+ 
++typedef struct _sh_input_line_state_t {
++  char *input_line;
++  int input_line_index;
++  int input_line_size;
++  int input_line_len;
++} sh_input_line_state_t;
++
+ /* Let's try declaring these here. */
+ extern sh_parser_state_t *save_parser_state __P((sh_parser_state_t *));
+ extern void restore_parser_state __P((sh_parser_state_t *));
++
++extern sh_input_line_state_t *save_input_line_state __P((sh_input_line_state_t *));
++extern void restore_input_line_state __P((sh_input_line_state_t *));
+diff -Naur bash-4.2.orig/sig.c bash-4.2/sig.c
+--- bash-4.2.orig/sig.c	2010-11-23 13:21:22.000000000 +0000
++++ bash-4.2/sig.c	2012-02-15 17:04:52.644528282 +0000
+@@ -46,6 +46,7 @@
+ 
+ #if defined (READLINE)
+ #  include "bashline.h"
++#  include <readline/readline.h>
+ #endif
+ 
+ #if defined (HISTORY)
+@@ -62,6 +63,7 @@
+ #if defined (HISTORY)
+ extern int history_lines_this_session;
+ #endif
++extern int no_line_editing;
+ 
+ extern void initialize_siglist ();
+ 
+@@ -505,7 +507,10 @@
+     {
+ #if defined (HISTORY)
+       /* XXX - will inhibit history file being written */
+-      history_lines_this_session = 0;
++#  if defined (READLINE)
++      if (interactive_shell == 0 || interactive == 0 || (sig != SIGHUP && sig != SIGTERM) || no_line_editing || (RL_ISSTATE (RL_STATE_READCMD) == 0))
++#  endif
++        history_lines_this_session = 0;
+ #endif
+       terminate_immediately = 0;
+       termsig_handler (sig);
+diff -Naur bash-4.2.orig/subst.c bash-4.2/subst.c
+--- bash-4.2.orig/subst.c	2011-01-02 21:12:51.000000000 +0000
++++ bash-4.2/subst.c	2012-02-15 17:04:59.656715107 +0000
+@@ -1379,10 +1379,12 @@
+   slen = strlen (string + *sindex) + *sindex;
+ 
+   /* The handling of dolbrace_state needs to agree with the code in parse.y:
+-     parse_matched_pair() */
+-  dolbrace_state = 0;
+-  if (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))
+-    dolbrace_state = (flags & SX_POSIXEXP) ? DOLBRACE_QUOTE : DOLBRACE_PARAM;
++     parse_matched_pair().  The different initial value is to handle the
++     case where this function is called to parse the word in
++     ${param op word} (SX_WORD). */
++  dolbrace_state = (flags & SX_WORD) ? DOLBRACE_WORD : DOLBRACE_PARAM;
++  if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && (flags & SX_POSIXEXP))
++    dolbrace_state = DOLBRACE_QUOTE;
+ 
+   i = *sindex;
+   while (c = string[i])
+@@ -3371,7 +3373,7 @@
+   if (string == 0 || *string == '\0')
+     return (WORD_LIST *)NULL;
+ 
+-  td.flags = 0;
++  td.flags = W_NOSPLIT2;		/* no splitting, remove "" and '' */
+   td.word = string;
+   tresult = call_expand_word_internal (&td, quoted, 1, dollar_at_p, has_dollar_at);
+   return (tresult);
+@@ -3704,7 +3706,10 @@
+ 	    break;
+ 	}
+       else if (string[i] == CTLNUL)
+-	i++;
++	{
++	  i++;
++	  continue;
++	}
+ 
+       prev_i = i;
+       ADVANCE_CHAR (string, slen, i);
+@@ -4607,6 +4612,7 @@
+   if (ifs_firstc == 0)
+ #endif
+     word->flags |= W_NOSPLIT;
++  word->flags |= W_NOSPLIT2;
+   result = call_expand_word_internal (word, quoted, 0, (int *)NULL, (int *)NULL);
+   expand_no_split_dollar_star = 0;
+ 
+@@ -7176,7 +7182,7 @@
+     {
+       /* Extract the contents of the ${ ... } expansion
+ 	 according to the Posix.2 rules. */
+-      value = extract_dollar_brace_string (string, &sindex, quoted, (c == '%' || c == '#') ? SX_POSIXEXP : 0);
++      value = extract_dollar_brace_string (string, &sindex, quoted, (c == '%' || c == '#' || c =='/' || c == '^' || c == ',' || c ==':') ? SX_POSIXEXP|SX_WORD : SX_WORD);
+       if (string[sindex] == RBRACE)
+ 	sindex++;
+       else
+diff -Naur bash-4.2.orig/subst.h bash-4.2/subst.h
+--- bash-4.2.orig/subst.h	2010-12-03 01:21:29.000000000 +0000
++++ bash-4.2/subst.h	2012-02-15 17:04:42.280252148 +0000
+@@ -56,6 +56,7 @@
+ #define SX_NOLONGJMP	0x0040	/* don't longjmp on fatal error */
+ #define SX_ARITHSUB	0x0080	/* extracting $(( ... )) (currently unused) */
+ #define SX_POSIXEXP	0x0100	/* extracting new Posix pattern removal expansions in extract_dollar_brace_string */
++#define SX_WORD		0x0200	/* extracting word in ${param op word} */
+ 
+ /* Remove backslashes which are quoting backquotes from STRING.  Modifies
+    STRING, and returns a pointer to it. */
+diff -Naur bash-4.2.orig/support/shobj-conf bash-4.2/support/shobj-conf
+--- bash-4.2.orig/support/shobj-conf	2009-10-28 13:20:21.000000000 +0000
++++ bash-4.2/support/shobj-conf	2012-02-15 17:05:09.844986552 +0000
+@@ -157,7 +157,7 @@
+ 	;;
+ 
+ # Darwin/MacOS X
+-darwin[89]*|darwin10*)
++darwin[89]*|darwin1[012]*)
+ 	SHOBJ_STATUS=supported
+ 	SHLIB_STATUS=supported
+ 	
+@@ -186,7 +186,7 @@
+ 	SHLIB_LIBSUFF='dylib'
+ 
+ 	case "${host_os}" in
+-	darwin[789]*|darwin10*)	SHOBJ_LDFLAGS=''
++	darwin[789]*|darwin1[012]*)	SHOBJ_LDFLAGS=''
+ 			SHLIB_XLDFLAGS='-dynamiclib -arch_only `/usr/bin/arch` -install_name $(libdir)/$@ -current_version $(SHLIB_MAJOR)$(SHLIB_MINOR) -compatibility_version $(SHLIB_MAJOR) -v'
+ 			;;
+ 	*)		SHOBJ_LDFLAGS='-dynamic'
+diff -Naur bash-4.2.orig/variables.c bash-4.2/variables.c
+--- bash-4.2.orig/variables.c	2011-01-25 01:07:48.000000000 +0000
++++ bash-4.2/variables.c	2012-02-15 17:04:49.868454320 +0000
+@@ -3653,6 +3653,22 @@
+   return n;
+ }
+ 
++int
++chkexport (name)
++     char *name;
++{
++  SHELL_VAR *v;
++
++  v = find_variable (name);
++  if (v && exported_p (v))
++    {
++      array_needs_making = 1;
++      maybe_make_export_env ();
++      return 1;
++    }
++  return 0;
++}
++
+ void
+ maybe_make_export_env ()
+ {
+@@ -4214,7 +4230,7 @@
+   { "TEXTDOMAIN", sv_locale },
+   { "TEXTDOMAINDIR", sv_locale },
+ 
+-#if defined (HAVE_TZSET) && defined (PROMPT_STRING_DECODE)
++#if defined (HAVE_TZSET)
+   { "TZ", sv_tz },
+ #endif
+ 
+@@ -4558,12 +4574,13 @@
+ }
+ #endif /* HISTORY */
+ 
+-#if defined (HAVE_TZSET) && defined (PROMPT_STRING_DECODE)
++#if defined (HAVE_TZSET)
+ void
+ sv_tz (name)
+      char *name;
+ {
+-  tzset ();
++  if (chkexport (name))
++    tzset ();
+ }
+ #endif
+ 
+diff -Naur bash-4.2.orig/variables.h bash-4.2/variables.h
+--- bash-4.2.orig/variables.h	2010-12-03 01:22:01.000000000 +0000
++++ bash-4.2/variables.h	2012-02-15 17:04:48.476417232 +0000
+@@ -313,6 +313,7 @@
+ 
+ extern void sort_variables __P((SHELL_VAR **));
+ 
++extern int chkexport __P((char *));
+ extern void maybe_make_export_env __P((void));
+ extern void update_export_env_inplace __P((char *, int, char *));
+ extern void put_command_name_into_env __P((char *));
