source: patches/bash-4.2-branch_update-5.patch@ 3ddeb23

assoc.c

@@ -77 +77 @@
   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);

bashline.c

@@ -121 +121 @@
 static int filename_completion_ignore __P((char **));
 static int bash_push_line __P((void));
 
+static rl_icppfunc_t *save_directory_hook __P((void));
+static void reset_directory_hook __P((rl_icppfunc_t *));
+
 static void cleanup_expansion_error __P((void));
 static void maybe_make_readline_line __P((char *));
 static void set_up_new_line __P((char *));
@@ -243 +246 @@
 /* Perform spelling correction on directory names during word completion */
 int dircomplete_spelling = 0;
 
+/* Expand directory names during word/filename completion. */
+int dircomplete_expand = 0;
+int dircomplete_expand_relpath = 0;
+
 static char *bash_completer_word_break_characters = " \t\n\"'@><=;|&(:";
 static char *bash_nohostname_word_break_characters = " \t\n\"'><=;|&(:";
 /* )) */
 
+static const char *default_filename_quote_characters = " \t\n\\\"'@<>=;|&()#$`?*[!:{~"; /*}*/
+static char *custom_filename_quote_characters = 0;
+
 static rl_hook_func_t *old_rl_startup_hook = (rl_hook_func_t *)NULL;
 
 static int dot_in_path = 0;
@@ -501 +511 @@
 
   /* Tell the completer that we might want to follow symbolic links or
      do other expansion on directory names. */
-  rl_directory_rewrite_hook = bash_directory_completion_hook;
+  set_directory_hook ();
 
   rl_filename_rewrite_hook = bash_filename_rewrite_hook;
 
@@ -529 +539 @@
   enable_hostname_completion (perform_hostname_completion);
 
   /* characters that need to be quoted when appearing in filenames. */
-  rl_filename_quote_characters = " \t\n\\\"'@<>=;|&()#$`?*[!:{~";       /*}*/
+  rl_filename_quote_characters = default_filename_quote_characters;
 
   rl_filename_quoting_function = bash_quote_filename;
   rl_filename_dequoting_function = bash_dequote_filename;
@@ -564 +574 @@
   tilde_initialize ();
   rl_attempted_completion_function = attempt_shell_completion;
   rl_completion_entry_function = NULL;
-  rl_directory_rewrite_hook = bash_directory_completion_hook;
   rl_ignore_some_completions_function = filename_completion_ignore;
+  rl_filename_quote_characters = default_filename_quote_characters;
+
+  set_directory_hook ();
 }
 
 /* Contains the line to push into readline. */
@@ -1279 +1291 @@
   matches = (char **)NULL;
   rl_ignore_some_completions_function = filename_completion_ignore;
 
+  rl_filename_quote_characters = default_filename_quote_characters;
+  set_directory_hook ();
+
   /* Determine if this could be a command word.  It is if it appears at
      the start of the line (ignoring preceding whitespace), or if it
      appears after a character that separates commands.  It cannot be a
@@ -1591 +1606 @@
             }
           else
             {
+             if (dircomplete_expand && dot_or_dotdot (filename_hint))
+                {
+                  dircomplete_expand = 0;
+                  set_directory_hook ();
+                  dircomplete_expand = 1;
+                }
               mapping_over = 4;
               goto inner;
             }
@@ -1791 +1812 @@
 
  inner:
   val = rl_filename_completion_function (filename_hint, istate);
+  if (mapping_over == 4 && dircomplete_expand)
+    set_directory_hook ();
+
   istate = 1;
 
   if (val == 0)
@@ -2693 +2717 @@
   return conv;
 }
 
+/* Functions to save and restore the appropriate directory hook */
+/* This is not static so the shopt code can call it */
+void
+set_directory_hook ()
+{
+  if (dircomplete_expand)
+    {
+      rl_directory_completion_hook = bash_directory_completion_hook;
+      rl_directory_rewrite_hook = (rl_icppfunc_t *)0;
+    }
+  else
+    {
+      rl_directory_rewrite_hook = bash_directory_completion_hook;
+      rl_directory_completion_hook = (rl_icppfunc_t *)0;
+    }
+}
+
+static rl_icppfunc_t *
+save_directory_hook ()
+{
+  rl_icppfunc_t *ret;
+
+  if (dircomplete_expand)
+    {
+      ret = rl_directory_completion_hook;
+      rl_directory_completion_hook = (rl_icppfunc_t *)NULL;
+    }
+  else
+    {
+      ret = rl_directory_rewrite_hook;
+      rl_directory_rewrite_hook = (rl_icppfunc_t *)NULL;
+    }
+
+  return ret;
+}
+
+static void
+restore_directory_hook (hookf)
+     rl_icppfunc_t *hookf;
+{
+  if (dircomplete_expand)
+    rl_directory_completion_hook = hookf;
+  else
+    rl_directory_rewrite_hook = hookf;
+}
+
 /* Handle symbolic link references and other directory name
    expansions while hacking completion.  This should return 1 if it modifies
    the DIRNAME argument, 0 otherwise.  It should make sure not to modify
@@ -2702 +2772 @@
      char **dirname;
 {
   char *local_dirname, *new_dirname, *t;
-  int return_value, should_expand_dirname;
+  int return_value, should_expand_dirname, nextch, closer;
   WORD_LIST *wl;
   struct stat sb;
 
-  return_value = should_expand_dirname = 0;
+  return_value = should_expand_dirname = nextch = closer = 0;
   local_dirname = *dirname;
 
-  if (mbschr (local_dirname, '$'))
-    should_expand_dirname = 1;
+  if (t = mbschr (local_dirname, '$'))
+    {
+      should_expand_dirname = '$';
+      nextch = t[1];
+      /* Deliberately does not handle the deprecated $[...] arithmetic
+         expansion syntax */
+      if (nextch == '(')
+        closer = ')';
+      else if (nextch == '{')
+        closer = '}';
+      else
+        nextch = 0;
+    }
   else
     {
       t = mbschr (local_dirname, '`');
       if (t && unclosed_pair (local_dirname, strlen (local_dirname), "`") == 0)
-        should_expand_dirname = 1;
+        should_expand_dirname = '`';
     }
 
 #if defined (HAVE_LSTAT)
@@ -2739 +2820 @@
           free (new_dirname);
           dispose_words (wl);
           local_dirname = *dirname;
+          /* XXX - change rl_filename_quote_characters here based on
+             should_expand_dirname/nextch/closer.  This is the only place
+             custom_filename_quote_characters is modified. */
+          if (rl_filename_quote_characters && *rl_filename_quote_characters)
+            {
+              int i, j, c;
+              i = strlen (default_filename_quote_characters);
+              custom_filename_quote_characters = xrealloc (custom_filename_quote_characters, i+1);
+              for (i = j = 0; c = default_filename_quote_characters[i]; i++)
+                {
+                  if (c == should_expand_dirname || c == nextch || c == closer)
+                    continue;
+                  custom_filename_quote_characters[j++] = c;
+                }
+              custom_filename_quote_characters[j] = '\0';
+              rl_filename_quote_characters = custom_filename_quote_characters;
+            }
         }
       else
         {
@@ -2758 +2856 @@
       local_dirname = *dirname = new_dirname;
     }
 
+  /* no_symbolic_links == 0 -> use (default) logical view of the file system.
+     local_dirname[0] == '.' && local_dirname[1] == '/' means files in the
+     current directory (./).
+     local_dirname[0] == '.' && local_dirname[1] == 0 means relative pathnames
+     in the current directory (e.g., lib/sh).
+     XXX - should we do spelling correction on these? */
+
+  /* This is test as it was in bash-4.2: skip relative pathnames in current
+     directory.  Change test to
+      (local_dirname[0] != '.' || (local_dirname[1] && local_dirname[1] != '/'))
+     if we want to skip paths beginning with ./ also. */
   if (no_symbolic_links == 0 && (local_dirname[0] != '.' || local_dirname[1]))
     {
       char *temp1, *temp2;
       int len1, len2;
 
+      /* If we have a relative path
+                (local_dirname[0] != '/' && local_dirname[0] != '.')
+         that is canonical after appending it to the current directory, then
+                temp1 = temp2+'/'
+         That is,
+                strcmp (temp1, temp2) == 0
+         after adding a slash to temp2 below.  It should be safe to not
+         change those.
+      */
       t = get_working_directory ("symlink-hook");
       temp1 = make_absolute (local_dirname, t);
       free (t);
@@ -2797 +2915 @@
               temp2[len2 + 1] = '\0';
             }
         }
-      return_value |= STREQ (local_dirname, temp2) == 0;
+
+      /* dircomplete_expand_relpath == 0 means we want to leave relative
+         pathnames that are unchanged by canonicalization alone.
+         *local_dirname != '/' && *local_dirname != '.' == relative pathname
+         (consistent with general.c:absolute_pathname())
+         temp1 == temp2 (after appending a slash to temp2) means the pathname
+         is not changed by canonicalization as described above. */
+      if (dircomplete_expand_relpath || ((local_dirname[0] != '/' && local_dirname[0] != '.') && STREQ (temp1, temp2) == 0))
+        return_value |= STREQ (local_dirname, temp2) == 0;
       free (local_dirname);
       *dirname = temp2;
       free (temp1);
@@ -3002 +3128 @@
 
   orig_func = rl_completion_entry_function;
   orig_attempt_func = rl_attempted_completion_function;
-  orig_dir_func = rl_directory_rewrite_hook;
   orig_ignore_func = rl_ignore_some_completions_function;
   orig_rl_completer_word_break_characters = rl_completer_word_break_characters;
+
+  orig_dir_func = save_directory_hook ();
+
   rl_completion_entry_function = rl_filename_completion_function;
   rl_attempted_completion_function = (rl_completion_func_t *)NULL;
-  rl_directory_rewrite_hook = (rl_icppfunc_t *)NULL;
   rl_ignore_some_completions_function = filename_completion_ignore;
   rl_completer_word_break_characters = " \t\n\"\'";
 
@@ -3015 +3142 @@
 
   rl_completion_entry_function = orig_func;
   rl_attempted_completion_function = orig_attempt_func;
-  rl_directory_rewrite_hook = orig_dir_func;
   rl_ignore_some_completions_function = orig_ignore_func;
   rl_completer_word_break_characters = orig_rl_completer_word_break_characters;
 
+  restore_directory_hook (orig_dir_func);
+
   return r;
 }
 

bashline.h

@@ -33 +33 @@
 extern void bashline_reinitialize __P((void));
 extern int bash_re_edit __P((char *));
 
+extern void bashline_set_event_hook __P((void));
+extern void bashline_reset_event_hook __P((void));
+
 extern int bind_keyseq_to_unix_command __P((char *));
 
 extern char **bash_default_completion __P((const char *, int, int, int, int));
 
+void set_directory_hook __P((void));
+
 /* Used by programmable completion code. */
 extern char *command_word_completion_function __P((const char *, int));
 extern char *bash_groupname_completion_function __P((const char *, int));

builtins/declare.def

@@ -513 +513 @@
               *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)
             {

builtins/fc.def

@@ -304 +304 @@
   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 +475 @@
      HIST_ENTRY **hlist;
 {
   int sign, n, clen, rh;
-  register int i, j;
+  register int i, j, last_hist;
   register char *s;
 
   sign = 1;
@@ -495 +495 @@
      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)

builtins/mapfile.def

@@ -195 +195 @@
   /* Reset the buffer for bash own stream */
   interrupt_immediately++;
   for (array_index = origin, line_count = 1; 
-       zgetline (fd, &line, &line_length, unbuffered_read) != -1;
-       array_index++, line_count++) 
+        zgetline (fd, &line, &line_length, unbuffered_read) != -1;
+        array_index++) 
     {
-      /* Have we exceeded # of lines to store? */
-      if (line_count_goal != 0 && line_count > line_count_goal) 
-        break;
-
       /* Remove trailing newlines? */
       if (flags & MAPF_CHOP)
         do_chop (line);
@@ -217 +213 @@
         }
 
       bind_array_element (entry, array_index, line, 0);
+
+      /* Have we exceeded # of lines to store? */
+      line_count++;
+      if (line_count_goal != 0 && line_count > line_count_goal) 
+        break;
     }
 
   xfree (line);

builtins/printf.def

@@ -255 +255 @@
 #endif
             {
               vflag = 1;
+              if (vbsize == 0)
+                vbuf = xmalloc (vbsize = 16);
               vblen = 0;
               if (vbuf)
                 vbuf[0] = 0;
@@ -465 +467 @@
                   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);

builtins/read.def

@@ -642 +642 @@
           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);
@@ -731 +737 @@
               xfree (t1);
             }
           else
-            var = bind_read_variable (varname, t);
+            var = bind_read_variable (varname, t ? t : "");
         }
       else
         {
@@ -792 +798 @@
       xfree (t);
     }
   else
-    var = bind_read_variable (list->word->word, input_string);
+    var = bind_read_variable (list->word->word, input_string ? input_string : "");
 
   if (var)
     {

builtins/shopt.def

@@ -61 +61 @@
 #include "common.h"
 #include "bashgetopt.h"
 
+#if defined (READLINE)
+#  include "../bashline.h"
+#endif
+
 #if defined (HISTORY)
 #  include "../bashhist.h"
 #endif
@@ -94 +98 @@
 extern int hist_verify, history_reediting, perform_hostname_completion;
 extern int no_empty_command_completion;
 extern int force_fignore;
-extern int dircomplete_spelling;
+extern int dircomplete_spelling, dircomplete_expand;
 
 extern int enable_hostname_completion __P((int));
 #endif
@@ -121 +125 @@
 static int set_restricted_shell __P((char *, int));
 #endif
 
+#if defined (READLINE)
+static int shopt_set_complete_direxpand __P((char *, int));
+#endif
+
 static int shopt_login_shell;
 static int shopt_compat31;
 static int shopt_compat32;
@@ -150 +158 @@
   { "compat40", &shopt_compat40, set_compatibility_level },
   { "compat41", &shopt_compat41, set_compatibility_level },
 #if defined (READLINE)
+  { "direxpand", &dircomplete_expand, shopt_set_complete_direxpand },
   { "dirspell", &dircomplete_spelling, (shopt_set_func_t *)NULL },
 #endif
   { "dotglob", &glob_dot_filenames, (shopt_set_func_t *)NULL },
@@ -535 +544 @@
   return 0;
 }
 
+#if defined (READLINE)
+static int
+shopt_set_complete_direxpand (option_name, mode)
+     char *option_name;
+     int mode;
+{
+  set_directory_hook ();
+  return 0;
+}
+#endif
+
 #if defined (RESTRICTED_SHELL)
 /* Don't allow the value of restricted_shell to be modified. */
 

command.h

@@ -97 +97 @@
 #define W_HASCTLESC     0x200000        /* word contains literal CTLESC characters */
 #define W_ASSIGNASSOC   0x400000        /* word looks like associative array assignment */
 #define W_ARRAYIND      0x800000        /* word is an array index being expanded */
+#define W_ASSNGLOBAL    0x1000000       /* word is a global assignment to declare (declare/typeset -g) */
 
 /* Possible values for subshell_environment */
 #define SUBSHELL_ASYNC  0x01    /* subshell caused by `command &' */

doc/bash.1

@@ -8948 +8948 @@
 quoted.  This is the behavior of posix mode through version 4.1.
 The default bash behavior remains as in previous versions.
 .TP 8
+.B direxpand
+If set,
+.B bash
+replaces directory names with the results of word expansion when performing
+filename completion.  This changes the contents of the readline editing
+buffer.
+If not set,
+.B bash
+attempts to preserve what the user typed.
+.TP 8
 .B dirspell
 If set,
 .B bash

doc/bashref.texi

@@ -4535 +4535 @@
 quoted.  This is the behavior of @sc{posix} mode through version 4.1.
 The default Bash behavior remains as in previous versions.
 
+@item direxpand
+If set, Bash
+replaces directory names with the results of word expansion when performing
+filename completion.  This changes the contents of the readline editing
+buffer.
+If not set, Bash attempts to preserve what the user typed.
+
 @item dirspell
 If set, Bash
 attempts spelling correction on directory names during word completion 

error.c

@@ -200 +200 @@
 
   va_end (args);
   if (exit_immediately_on_error)
-    exit_shell (1);
+    {
+      if (last_command_exit_value == 0)
+        last_command_exit_value = 1;
+      exit_shell (last_command_exit_value);
+    }
 }
 
 void

execute_cmd.c

@@ -2196 +2196 @@
   if (ignore_return && cmd)
     cmd->flags |= CMD_IGNORE_RETURN;
 
+#if defined (JOB_CONTROL)
   lastpipe_flag = 0;
   begin_unwind_frame ("lastpipe-exec");
   lstdin = -1;
@@ -2204 +2205 @@
      current shell environment. */
   if (lastpipe_opt && job_control == 0 && asynchronous == 0 && pipe_out == NO_PIPE && prev > 0)
     {
-      lstdin = move_to_high_fd (0, 0, 255);
+      lstdin = move_to_high_fd (0, 1, -1);
       if (lstdin > 0)
         {
           do_piping (prev, pipe_out);
@@ -2215 +2216 @@
           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);
@@ -2246 +2251 @@
       unfreeze_jobs_list ();
     }
 
+#if defined (JOB_CONTROL)
   discard_unwind_frame ("lastpipe-exec");
+#endif
 
   return (exec_result);
 }
@@ -3575 +3582 @@
 {
   WORD_LIST *w;
   struct builtin *b;
-  int assoc;
+  int assoc, global;
 
   if (words == 0)
     return;
 
   b = 0;
-  assoc = 0;
+  assoc = global = 0;
 
   for (w = words; w; w = w->next)
     if (w->word->flags & W_ASSIGNMENT)
@@ -3598 +3605 @@
 #if defined (ARRAY_VARS)
         if (assoc)
           w->word->flags |= W_ASSIGNASSOC;
+        if (global)
+          w->word->flags |= W_ASSNGLOBAL;
 #endif
       }
 #if defined (ARRAY_VARS)
     /* Note that we saw an associative array option to a builtin that takes
        assignment statements.  This is a bit of a kludge. */
-    else if (w->word->word[0] == '-' && strchr (w->word->word, 'A'))
+    else if (w->word->word[0] == '-' && (strchr (w->word->word+1, 'A') || strchr (w->word->word+1, 'g')))
+#else
+    else if (w->word->word[0] == '-' && strchr (w->word->word+1, 'g'))
+#endif
       {
         if (b == 0)
           {
@@ -3613 +3625 @@
             else if (b && (b->flags & ASSIGNMENT_BUILTIN))
               words->word->flags |= W_ASSNBLTIN;
           }
-        if (words->word->flags & W_ASSNBLTIN)
+        if ((words->word->flags & W_ASSNBLTIN) && strchr (w->word->word+1, 'A'))
           assoc = 1;
+        if ((words->word->flags & W_ASSNBLTIN) && strchr (w->word->word+1, 'g'))
+          global = 1;
       }
-#endif
 }
 
 /* Return 1 if the file found by searching $PATH for PATHNAME, defaulting

bash-4.2

@@ -476 +476 @@
 
       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 +808 @@
       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;

lib/glob/glob.c

@@ -200 +200 @@
   wchar_t *pat_wc, *dn_wc;
   size_t pat_n, dn_n;
 
+  pat_wc = dn_wc = (wchar_t *)NULL;
+
   pat_n = xdupmbstowcs (&pat_wc, NULL, pat);
-  dn_n = xdupmbstowcs (&dn_wc, NULL, dname);
+  if (pat_n != (size_t)-1)
+    dn_n = xdupmbstowcs (&dn_wc, NULL, dname);
 
   ret = 0;
   if (pat_n != (size_t)-1 && dn_n !=(size_t)-1)
@@ -221 +224 @@
            (pat_wc[0] != L'\\' || pat_wc[1] != L'.'))
         ret = 1;
     }
+  else
+    ret = skipname (pat, dname, flags);
 
   FREE (pat_wc);
   FREE (dn_wc);
@@ -266 +271 @@
   /* Convert the strings into wide characters.  */
   n = xdupmbstowcs (&wpathname, NULL, pathname);
   if (n == (size_t) -1)
-    /* Something wrong. */
-    return;
+    {
+      /* Something wrong.  Fall back to single-byte */
+      udequote_pathname (pathname);
+      return;
+    }
   orig_wpathname = wpathname;
 
   for (i = j = 0; wpathname && wpathname[i]; )

lib/glob/gmisc.c

@@ -77 +77 @@
      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 +118 @@
           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 +235 @@
      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 +276 @@
           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;
         }
     }

lib/glob/xmbsrtowcs.c

@@ -35 +35 @@
 
 #if HANDLE_MULTIBYTE
 
+#define WSBUF_INC 32
+
 #ifndef FREE
 #  define FREE(x)       do { if (x) free (x); } while (0)
 #endif
@@ -148 +150 @@
   size_t wsbuf_size;    /* Size of WSBUF */
   size_t wcnum;         /* Number of wide characters in WSBUF */
   mbstate_t state;      /* Conversion State */
-  size_t wcslength;     /* Number of wide characters produced by the conversion. */
+  size_t n, wcslength;  /* Number of wide characters produced by the conversion. */
   const char *end_or_backslash;
   size_t nms;   /* Number of multibyte characters to convert at one time. */
   mbstate_t tmp_state;
@@ -171 +173 @@
       /* Compute the number of produced wide-characters. */
       tmp_p = p;
       tmp_state = state;
-      wcslength = mbsnrtowcs(NULL, &tmp_p, nms, 0, &tmp_state);
+
+      if (nms == 0 && *p == '\\')       /* special initial case */
+        nms = wcslength = 1;
+      else
+        wcslength = mbsnrtowcs (NULL, &tmp_p, nms, 0, &tmp_state);
+
+      if (wcslength == 0)
+        {
+          tmp_p = p;            /* will need below */
+          tmp_state = state;
+          wcslength = 1;        /* take a single byte */
+        }
 
       /* Conversion failed. */
       if (wcslength == (size_t)-1)
@@ -186 +199 @@
         {
           wchar_t *wstmp;
 
-          wsbuf_size = wcnum+wcslength+1;       /* 1 for the L'\0' or the potential L'\\' */
+          while (wsbuf_size < wcnum+wcslength+1) /* 1 for the L'\0' or the potential L'\\' */
+            wsbuf_size += WSBUF_INC;
 
           wstmp = (wchar_t *) realloc (wsbuf, wsbuf_size * sizeof (wchar_t));
           if (wstmp == NULL)
@@ -199 +213 @@
         }
 
       /* Perform the conversion. This is assumed to return 'wcslength'.
-       * It may set 'p' to NULL. */
-      mbsnrtowcs(wsbuf+wcnum, &p, nms, wsbuf_size-wcnum, &state);
+         It may set 'p' to NULL. */
+      n = mbsnrtowcs(wsbuf+wcnum, &p, nms, wsbuf_size-wcnum, &state);
 
-      wcnum += wcslength;
+      /* Compensate for taking single byte on wcs conversion failure above. */
+      if (wcslength == 1 && (n == 0 || n == (size_t)-1))
+        {
+          state = tmp_state;
+          p = tmp_p;
+          wsbuf[wcnum++] = *p++;
+        }
+      else
+        wcnum += wcslength;
 
       if (mbsinit (&state) && (p != NULL) && (*p == '\\'))
         {
@@ -230 +252 @@
    If conversion is failed, the return value is (size_t)-1 and the values
    of DESTP and INDICESP are NULL. */
 
-#define WSBUF_INC 32
-
 size_t
 xdupmbstowcs (destp, indicesp, src)
     wchar_t **destp;    /* Store the pointer to the wide character string */

lib/readline/callback.c

@@ -148 +148 @@
           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

lib/readline/input.c

@@ -409 +409 @@
 int
 rl_read_key ()
 {
-  int c;
+  int c, r;
 
   rl_key_sequence_length++;
 
@@ -429 +429 @@
         {
           while (rl_event_hook)
             {
-              if (rl_gather_tyi () < 0) /* XXX - EIO */
+              if (rl_get_char (&c) != 0)
+                break;
+                
+              if ((r = rl_gather_tyi ()) < 0)   /* XXX - EIO */
                 {
                   rl_done = 1;
                   return ('\n');
                 }
+              else if (r == 1)                  /* read something */
+                continue;
+
               RL_CHECK_SIGNALS ();
-              if (rl_get_char (&c) != 0)
-                break;
               if (rl_done)              /* XXX - experimental */
                 return ('\n');
               (*rl_event_hook) ();

lib/readline/vi_mode.c

@@ -1114 +1114 @@
       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 */
@@ -1234 +1234 @@
       _rl_vimvcxt->motion = '$';
       r = rl_domove_motion_callback (_rl_vimvcxt);
     }
-  else if (vi_redoing)
+  else if (vi_redoing && _rl_vi_last_motion != 'd')     /* `dd' is special */
     {
       _rl_vimvcxt->motion = _rl_vi_last_motion;
       r = rl_domove_motion_callback (_rl_vimvcxt);
     }
+  else if (vi_redoing)          /* handle redoing `dd' here */
+    {
+      _rl_vimvcxt->motion = _rl_vi_last_motion;
+      rl_mark = rl_end;
+      rl_beg_of_line (1, key);
+      RL_UNSETSTATE (RL_STATE_VIMOTION);
+      r = vidomove_dispatch (_rl_vimvcxt);
+    }
 #if defined (READLINE_CALLBACKS)
   else if (RL_ISSTATE (RL_STATE_CALLBACK))
     {
@@ -1316 +1324 @@
       _rl_vimvcxt->motion = '$';
       r = rl_domove_motion_callback (_rl_vimvcxt);
     }
-  else if (vi_redoing)
+  else if (vi_redoing && _rl_vi_last_motion != 'c')     /* `cc' is special */
     {
       _rl_vimvcxt->motion = _rl_vi_last_motion;
       r = rl_domove_motion_callback (_rl_vimvcxt);
     }
+  else if (vi_redoing)          /* handle redoing `cc' here */
+    {
+      _rl_vimvcxt->motion = _rl_vi_last_motion;
+      rl_mark = rl_end;
+      rl_beg_of_line (1, key);
+      RL_UNSETSTATE (RL_STATE_VIMOTION);
+      r = vidomove_dispatch (_rl_vimvcxt);
+    }
 #if defined (READLINE_CALLBACKS)
   else if (RL_ISSTATE (RL_STATE_CALLBACK))
     {
@@ -1377 +1393 @@
       _rl_vimvcxt->motion = '$';
       r = rl_domove_motion_callback (_rl_vimvcxt);
     }
+  else if (vi_redoing && _rl_vi_last_motion != 'y')     /* `yy' is special */
+    {
+      _rl_vimvcxt->motion = _rl_vi_last_motion;
+      r = rl_domove_motion_callback (_rl_vimvcxt);
+    }
+  else if (vi_redoing)                  /* handle redoing `yy' here */
+    {
+      _rl_vimvcxt->motion = _rl_vi_last_motion;
+      rl_mark = rl_end;
+      rl_beg_of_line (1, key);
+      RL_UNSETSTATE (RL_STATE_VIMOTION);
+      r = vidomove_dispatch (_rl_vimvcxt);
+    }
 #if defined (READLINE_CALLBACKS)
   else if (RL_ISSTATE (RL_STATE_CALLBACK))
     {

lib/sh/eaccess.c

@@ -82 +82 @@
      const char *path;
      struct stat *finfo;
 {
+  static char *pbuf = 0;
+
   if (*path == '\0')
     {
       errno = ENOENT;
@@ -106 +108 @@
      trailing slash.  Make sure /dev/fd/xx really uses DEV_FD_PREFIX/xx.
      On most systems, with the notable exception of linux, this is
      effectively a no-op. */
-      char pbuf[32];
+      pbuf = xrealloc (pbuf, sizeof (DEV_FD_PREFIX) + strlen (path + 8));
       strcpy (pbuf, DEV_FD_PREFIX);
       strcat (pbuf, path + 8);
       return (stat (pbuf, finfo));

lib/sh/zread.c

@@ -160 +160 @@
 zsyncfd (fd)
      int fd;
 {
-  off_t off;
-  int r;
+  off_t off, r;
 
   off = lused - lind;
   r = 0;
   if (off > 0)
     r = lseek (fd, -off, SEEK_CUR);
 
-  if (r >= 0)
+  if (r != -1)
     lused = lind = 0;
 }

parse.y

@@ -2499 +2499 @@
          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 +3842 @@
      int flags;
 {
   sh_parser_state_t ps;
+  sh_input_line_state_t ls;
   int orig_ind, nc, sflags;
   char *ret, *s, *ep, *ostring;
 
@@ -3849 +3850 @@
   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 +3864 @@
 
   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;
 
@@ -4895 +4900 @@
       return (current_command_line_count == 2 ? "\n" : "");
     }
 
+  if (parser_state & PST_COMPASSIGN)
+    return (" ");
+
   /* First, handle some special cases. */
   /*(*/
   /* If we just read `()', assume it's a function definition, and don't
@@ -5135 +5143 @@
             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 +5916 @@
   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 +5963 @@
 
   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 ();
 }
 
 /************************************************

patchlevel.h

@@ -25 +25 @@
    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 37
 
 #endif /* _PATCHLEVEL_H_ */

pathexp.c

@@ -196 +196 @@
         {
           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++;

print_cmd.c

@@ -315 +315 @@
           cprintf ("( ");
           skip_this_indent++;
           make_command_string_internal (command->value.Subshell->command);
+          PRINT_DEFERRED_HEREDOCS ("");
           cprintf (" )");
           break;
 
@@ -592 +593 @@
   newline ("do\n");
   indentation += indentation_amount;
   make_command_string_internal (arith_for_command->action);
+  PRINT_DEFERRED_HEREDOCS ("");
   semicolon ();
   indentation -= indentation_amount;
   newline ("done");
@@ -653 +655 @@
     }
 
   make_command_string_internal (group_command->command);
+  PRINT_DEFERRED_HEREDOCS ("");
 
   if (inside_function_def)
     {

shell.h

@@ -136 +136 @@
   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 +169 @@
   
 } 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 *));

bash-4.2

@@ -46 +46 @@
 
 #if defined (READLINE)
 #  include "bashline.h"
+#  include <readline/readline.h>
 #endif
 
 #if defined (HISTORY)
@@ -62 +63 @@
 #if defined (HISTORY)
 extern int history_lines_this_session;
 #endif
+extern int no_line_editing;
 
 extern void initialize_siglist ();
 
@@ -505 +507 @@
     {
 #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);

subst.c

@@ -366 +366 @@
       f &= ~W_ASSNBLTIN;
       fprintf (stderr, "W_ASSNBLTIN%s", f ? "|" : "");
     }
+  if (f & W_ASSNGLOBAL)
+    {
+      f &= ~W_ASSNGLOBAL;
+      fprintf (stderr, "W_ASSNGLOBAL%s", f ? "|" : "");
+    }
   if (f & W_COMPASSIGN)
     {
       f &= ~W_COMPASSIGN;
@@ -1379 +1384 @@
   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])
@@ -2801 +2808 @@
     }
   else if (assign_list)
     {
-      if (word->flags & W_ASSIGNARG)
+      if ((word->flags & W_ASSIGNARG) && (word->flags & W_ASSNGLOBAL) == 0)
         aflags |= ASS_MKLOCAL;
       if (word->flags & W_ASSIGNASSOC)
         aflags |= ASS_MKASSOC;
@@ -3371 +3378 @@
   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 +3711 @@
             break;
         }
       else if (string[i] == CTLNUL)
-        i++;
+        {
+          i++;
+          continue;
+        }
 
       prev_i = i;
       ADVANCE_CHAR (string, slen, i);
@@ -4156 +4166 @@
   simple = (wpat[0] != L'\\' && wpat[0] != L'*' && wpat[0] != L'?' && wpat[0] != L'[');
 #if defined (EXTENDED_GLOB)
   if (extended_glob)
-    simple |= (wpat[1] != L'(' || (wpat[0] != L'*' && wpat[0] != L'?' && wpat[0] != L'+' && wpat[0] != L'!' && wpat[0] != L'@')); /*)*/
+    simple &= (wpat[1] != L'(' || (wpat[0] != L'*' && wpat[0] != L'?' && wpat[0] != L'+' && wpat[0] != L'!' && wpat[0] != L'@')); /*)*/
 #endif
 
   /* If the pattern doesn't match anywhere in the string, go ahead and
@@ -4607 +4617 @@
   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;
 
@@ -5798 +5809 @@
          is the only expansion that creates more than one word. */
       if (qdollaratp && ((hasdol && quoted) || l->next))
         *qdollaratp = 1;
+      /* If we have a quoted null result (QUOTED_NULL(temp)) and the word is
+         a quoted null (l->next == 0 && QUOTED_NULL(l->word->word)), the
+         flags indicate it (l->word->flags & W_HASQUOTEDNULL), and the
+         expansion is quoted (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))
+         (which is more paranoia than anything else), we need to return the
+         quoted null string and set the flags to indicate it. */
+      if (l->next == 0 && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && QUOTED_NULL(temp) && QUOTED_NULL(l->word->word) && (l->word->flags & W_HASQUOTEDNULL))
+        {
+          w->flags |= W_HASQUOTEDNULL;
+        }
       dispose_words (l);
     }
   else if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && hasdol)
@@ -7176 +7197 @@
     {
       /* 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
@@ -7268 +7289 @@
     default:
     case '\0':
     bad_substitution:
+      last_command_exit_value = EXECUTION_FAILURE;
       report_error (_("%s: bad substitution"), string ? string : "??");
       FREE (value);
       FREE (temp);
@@ -7900 +7922 @@
 
   /* State flags */
   int had_quoted_null;
-  int has_dollar_at;
+  int has_dollar_at, temp_has_dollar_at;
   int tflag;
   int pflags;                   /* flags passed to param_expand */
 
@@ -8105 +8127 @@
           if (expanded_something)
             *expanded_something = 1;
 
-          has_dollar_at = 0;
+          temp_has_dollar_at = 0;
           pflags = (word->flags & W_NOCOMSUB) ? PF_NOCOMSUB : 0;
           if (word->flags & W_NOSPLIT2)
             pflags |= PF_NOSPLIT2;
           tword = param_expand (string, &sindex, quoted, expanded_something,
-                               &has_dollar_at, &quoted_dollar_at,
+                               &temp_has_dollar_at, &quoted_dollar_at,
                                &had_quoted_null, pflags);
+          has_dollar_at += temp_has_dollar_at;
 
           if (tword == &expand_wdesc_error || tword == &expand_wdesc_fatal)
             {
@@ -8129 +8152 @@
           temp = tword->word;
           dispose_word_desc (tword);
 
+          /* Kill quoted nulls; we will add them back at the end of
+             expand_word_internal if nothing else in the string */
+          if (had_quoted_null && temp && QUOTED_NULL (temp))
+            {
+              FREE (temp);
+              temp = (char *)NULL;
+            }
+
           goto add_string;
           break;
 
@@ -8244 +8275 @@
 
               temp = (char *)NULL;
 
-              has_dollar_at = 0;
+              temp_has_dollar_at = 0;   /* XXX */
               /* Need to get W_HASQUOTEDNULL flag through this function. */
-              list = expand_word_internal (tword, Q_DOUBLE_QUOTES, 0, &has_dollar_at, (int *)NULL);
+              list = expand_word_internal (tword, Q_DOUBLE_QUOTES, 0, &temp_has_dollar_at, (int *)NULL);
+              has_dollar_at += temp_has_dollar_at;
 
               if (list == &expand_word_error || list == &expand_word_fatal)
                 {
@@ -8533 +8565 @@
         tword->flags |= W_NOEXPAND;     /* XXX */
       if (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))
         tword->flags |= W_QUOTED;
-      if (had_quoted_null)
+      if (had_quoted_null && QUOTED_NULL (istring))
         tword->flags |= W_HASQUOTEDNULL;
       list = make_word_list (tword, (WORD_LIST *)NULL);
     }
@@ -8564 +8596 @@
             tword->flags |= W_NOGLOB;
           if (word->flags & W_NOEXPAND)
             tword->flags |= W_NOEXPAND;
-          if (had_quoted_null)
+          if (had_quoted_null && QUOTED_NULL (istring))
             tword->flags |= W_HASQUOTEDNULL;    /* XXX */
           list = make_word_list (tword, (WORD_LIST *)NULL);
         }

subst.h

@@ -56 +56 @@
 #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. */

support/shobj-conf

@@ -157 +157 @@
         ;;
 
 # Darwin/MacOS X
-darwin[89]*|darwin10*)
+darwin[89]*|darwin1[012]*)
         SHOBJ_STATUS=supported
         SHLIB_STATUS=supported
         
@@ -186 +186 @@
         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'

tests/shopt.right

@@ -12 +12 @@
 shopt -u compat32
 shopt -u compat40
 shopt -u compat41
+shopt -u direxpand
 shopt -u dirspell
 shopt -u dotglob
 shopt -u execfail
@@ -68 +69 @@
 shopt -u compat32
 shopt -u compat40
 shopt -u compat41
+shopt -u direxpand
 shopt -u dirspell
 shopt -u dotglob
 shopt -u execfail
@@ -101 +103 @@
 compat32        off
 compat40        off
 compat41        off
+direxpand       off
 dirspell        off
 dotglob         off
 execfail        off

variables.c

@@ -3653 +3653 @@
   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 +4230 @@
   { "TEXTDOMAIN", sv_locale },
   { "TEXTDOMAINDIR", sv_locale },
 
-#if defined (HAVE_TZSET) && defined (PROMPT_STRING_DECODE)
+#if defined (HAVE_TZSET)
   { "TZ", sv_tz },
 #endif
 
@@ -4558 +4574 @@
 }
 #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
 

variables.h

@@ -313 +313 @@
 
 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 *));