diff --git a/ksh-20110630-ddotfix.patch b/ksh-20110630-ddotfix.patch
new file mode 100644
index 0000000..5dc7734
--- /dev/null
+++ b/ksh-20110630-ddotfix.patch
@@ -0,0 +1,12 @@
+diff -up ksh-20110630/src/cmd/ksh93/include/nval.h.ddotfix ksh-20110630/src/cmd/ksh93/include/nval.h
+--- ksh-20110630/src/cmd/ksh93/include/nval.h.ddotfix	2011-12-07 14:31:31.793236351 +0100
++++ ksh-20110630/src/cmd/ksh93/include/nval.h	2011-12-07 14:32:26.357677922 +0100
+@@ -198,7 +198,7 @@ struct Namval
+ 
+ /* name-value pair macros */
+ #define nv_isattr(np,f)		((np)->nvflag & (f))
+-#define nv_onattr(n,f)		((n)->nvflag |= (f))
++#define nv_onattr(n,f)		((n)?((n)->nvflag |= (f)):(f))
+ #define nv_offattr(n,f)		((n)->nvflag &= ~(f))
+ #define nv_isarray(np)		(nv_isattr((np),NV_ARRAY))
+ 
diff --git a/ksh.spec b/ksh.spec
index a4f893b..0fdba52 100644
--- a/ksh.spec
+++ b/ksh.spec
@@ -6,7 +6,7 @@ URL:          http://www.kornshell.com/
 Group:        System Environment/Shells
 License:      CPL
 Version:      20110630
-Release:      7%{?dist}
+Release:      8%{?dist}
 Source0:      http://www.research.att.com/~gsf/download/tgz/ast-ksh.%{releasedate}.tgz
 Source1:      http://www.research.att.com/~gsf/download/tgz/INIT.%{releasedate}.tgz
 Source3:      kshrc.rhs
@@ -32,6 +32,8 @@ Patch6:       ksh-20110630-joblimit.patch
 
 Patch7:       ksh-20110630-dontstop.patch
 
+Patch8:       ksh-20110630-ddotfix.patch
+
 BuildRoot:    %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 Conflicts:    pdksh
 Requires: coreutils, glibc-common, diffutils
@@ -57,6 +59,7 @@ with "sh" (the Bourne Shell).
 %patch5 -p1 -b .tmoutfix
 %patch6 -p1 -b .joblimit
 %patch7 -p1 -b .dontstop
+%patch8 -p1 -b .ddotfix
 
 #/dev/fd test does not work because of mock
 sed -i 's|ls /dev/fd|ls /proc/self/fd|' src/cmd/ksh93/features/options
@@ -142,6 +145,9 @@ fi
     rm -rf $RPM_BUILD_ROOT
 
 %changelog
+* Wed Dec 07 2011 Michal Hlavinka <mhlavink@redhat.com> - 20110630-8
+- do not crash when two subseguent dots are used in variable or command name (#733544)
+
 * Mon Dec 05 2011 Michal Hlavinka <mhlavink@redhat.com> - 20110630-7
 - fix: ksh can prematurely exit without crash or any error
 - make spec work in epel