BASH PATCH REPORT
			     =================

Bash-Release:	4.2
Patch-ID:	bash42-032

Bug-Reported-by:	Ruediger Kuhlmann <RKuhlmann@orga-systems.com>
Bug-Reference-ID:	<OFDE975207.0C3622E5-ONC12579F3.00361A06-C12579F3.00365E39@orga-systems.com>
Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2012-05/msg00010.html

Bug-Description:

Bash-4.2 has problems with DEL characters in the expanded value of variables
used in the same quoted string as variables that expand to nothing.

Patch (apply with `patch -p0'):

--- a/subst.c
+++ b/subst.c
@@ -8151,6 +8151,14 @@ add_string:
 	  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;
 
@@ -8555,7 +8563,7 @@ finished_with_string:
 	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);
     }
@@ -8586,7 +8594,7 @@ finished_with_string:
 	    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);
 	}
--- a/patchlevel.h
+++ b/patchlevel.h
@@ -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 31
+#define PATCHLEVEL 32
 
 #endif /* _PATCHLEVEL_H_ */