On non-English keyboards (Serbian/Croatian/Slovenian, but as they are based on QWERTZ, I imagine German and possibly others too), both "+" and "-" might not require pressing Shift either, and are much better characters than comma.
These are inconvenient for doing anything with the script files except invoking them, because these characters introduce command-line options.
These are inconvenient for doing anything with the script files except invoking them, because these characters introduce command-line options.