File udev-cd-rule-gen-escape.patch of Package udev

--- a/extras/rule_generator/write_cd_rules
+++ b/extras/rule_generator/write_cd_rules
@@ -23,7 +23,7 @@ RULES_FILE="/etc/udev/rules.d/70-persistent-cd.rules"
 . /lib/udev/rule_generator.functions
 
 find_next_available() {
-	raw_find_next_available "$(find_all_rules 'SYMLINK+=' "$1")"
+	raw_find_next_available "$(find_all_rules 'SYMLINK\+=' "$1")"
 }
 
 write_rule() {