Update waybar sleep stuff

system-menu/system-sleep-menu.sh

@@ -26,6 +26,7 @@ done
 
 function is_valid_sleep_time() {
     [[ "${1}" = forever ]] \
+        || [[ "${1}" = infinity ]] \
         || [[ "${1}" =~ ' *([0-9]+[smhd]? *)+' ]]
 }
 
@@ -53,7 +54,9 @@ else
         exit
     elif is_valid_sleep_time "${choice}"; then
         [[ "${choice}" == forever ]] && choice=infinity
-        systemctl --user start "manual-inhibit-sleep@${choice}.service"
+        local unit="$(systemd-escape --template=manual-inhibit-sleep@.service \
+                      "${choice}")"
+        systemctl --user start "${unit}"
     else
         printf 'Invalid sleep time: %s\n' "${choice}" 1>&2
     fi