Changed valid printer name characters

printer.sh

@@ -118,9 +118,9 @@ function printer_rename {
         exit 1
     fi
 
-    if ! grep -qE '^[a-zA-Z0-9_]+$' <<< "${NEW_NAME}"; then
+    if grep -qE '[ \/'\''"?#]' <<< "${NEW_NAME}"; then
         echo "Invalid characters in new name '${NEW_NAME}'!"
-        echo "Valid characters are: A-Z a-z 0-9 _"
+        echo "Valid characters are anything except \" ' \\ / ? # and spaces"
         exit 1
     fi