--- /usr/portage/eclass/apache-2.eclass	2012-05-23 05:31:13.000000000 +0200
+++ /usr/local/portage/eclass/apache-2.eclass	2012-07-24 23:31:06.146667160 +0200
@@ -69,9 +69,19 @@
 IUSE_MPMS="${IUSE_MPMS_FORK} ${IUSE_MPMS_THREAD}"
 IUSE="${IUSE} debug doc ldap selinux ssl static suexec threads"
 
+IUSE_MODULES_TEMP=
 for module in ${IUSE_MODULES} ; do
-	IUSE="${IUSE} apache2_modules_${module}"
+	# expand "+foo" to "+apache2_modules_foo"
+	if [ "${module:0:1}" == '+' ]; then
+		IUSE="${IUSE} +apache2_modules_${module:1}"
+		# replace "+foo" with "foo"
+		IUSE_MODULES_TEMP="${IUSE_MODULES_TEMP} ${module:1}"
+	else
+		IUSE="${IUSE} apache2_modules_${module}"
+		IUSE_MODULES_TEMP="${IUSE_MODULES_TEMP} ${module}"
+	fi
 done
+IUSE_MODULES="${IUSE_MODULES_TEMP}"
 
 for mpm in ${IUSE_MPMS} ; do
 	IUSE="${IUSE} apache2_mpms_${mpm}"