[dash/f14] Try to add dash to /etc/shells every time, not just on new installs (#706138)

[Petr Sabata]

commit 128bd3afe17099cc06e5bdc4d819ab00f12de87a
Author: Petr Sabata <psabata at redhat.com>
Date:   Mon May 23 09:06:16 2011 +0200

    Try to add dash to /etc/shells every time, not just on new installs (#706138)

 dash.spec |   12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)
---
diff --git a/dash.spec b/dash.spec
index 22c239d..ae1c17d 100644
--- a/dash.spec
+++ b/dash.spec
@@ -1,6 +1,6 @@
 Name:           dash
 Version:        0.5.6
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Small and fast POSIX-compliant shell
 Group:          System Environment/Shells
 License:        BSD
@@ -26,13 +26,11 @@ mv %{buildroot}%{_bindir}/dash %{buildroot}/bin/
 rm -rf %{buildroot}%{_bindir}/
 
 %post
-if [ $1 -eq 1 ]; then
-    grep -qF /bin/dash /etc/shells || echo '/bin/dash' >> /etc/shells
-fi
+grep -qF '^/bin/dash$' /etc/shells || echo '/bin/dash' >> /etc/shells
 
 %postun
 if [ $1 -eq 0 ]; then
-    sed -i '/\/bin\/dash/d' /etc/shells
+    sed -i '/^\/bin\/dash$/d' /etc/shells
 fi
 
 %files
@@ -41,6 +39,10 @@ fi
 %{_datadir}/man/man1/dash.1.gz
 
 %changelog
+* Mon May 23 2011 Petr Sabata <psabata at redhat.com> - 0.5.6-4
+- Try to add dash to /etc/shells every time, not just on new installs (#706138)
+- Also, make the grep regexps a bit more strict, just to be sure
+
 * Thu May 19 2011 Petr Sabata <psabata at redhat.com> - 0.5.6-3
 - Install/remove dash from /etc/shells (#706138)
 - Buildroot and defattr cleanup