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

Bash-Release:	4.2
Patch-ID:	bash42-046

Bug-Reported-by:	"Theodoros V. Kalamatianos" <thkala@gmail.com>
Bug-Reference-ID:	<20140112011131.GE17667@infinity.metashade.com>
Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2014-01/msg00044.html

Bug-Description:

Bash-4.2 patch 32 introduced a problem with "$@" and arrays expanding empty
positional parameters or array elements when using substring expansion,
pattern substitution, or case modfication.  The empty parameters or array
elements are removed instead of expanding to empty strings ("").

Patch (apply with `patch -p0'):

--- a/subst.c
+++ b/subst.c
@@ -7242,7 +7242,13 @@ parameter_brace_expand (string, indexp,
 
       ret = alloc_word_desc ();
       ret->word = temp1;
-      if (temp1 && QUOTED_NULL (temp1) && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)))
+      /* We test quoted_dollar_atp because we want variants with double-quoted
+	 "$@" to take a different code path. In fact, we make sure at the end
+	 of expand_word_internal that we're only looking at these flags if
+	 quoted_dollar_at == 0. */
+      if (temp1 && 
+          (quoted_dollar_atp == 0 || *quoted_dollar_atp == 0) &&
+	  QUOTED_NULL (temp1) && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)))
 	ret->flags |= W_QUOTED|W_HASQUOTEDNULL;
       return ret;
     }
--- 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 45
+#define PATCHLEVEL 46
 
 #endif /* _PATCHLEVEL_H_ */