installing that build, I get:

[mclasen@localhost ~]$ sudo rpm -U --force docbook-dtds-1.0-34.fc9.noarch.rpm 
Can't open {CATALOG}: No such file or directory at -e line 1.


Here is the fix (I'm really sorry to dump such trivia into bugzilla,
but acls prevent me from building the trivial fix myself.)

@@ -630,7 +630,7 @@
   XML=$((XML - 1))
   SGML=$((SGML - 1))
   perl -e "@_=<>;@_[$XML, $SGML]=@_[$SGML, $XML];print @_" \
-    {CATALOG} > ${CATALOG}.rpmtmp
+    ${CATALOG} > ${CATALOG}.rpmtmp
   mv -f ${CATALOG}.rpmtmp ${CATALOG}
 fi