VSCode debug: entering multiple command-line arguments on a single line

I know that I can make VSCode prompt me for command-line arguments when launching a program under the debugger by specifying something like this in launch.json:

{
    "configurations": [
        {
            "name": "(gdb) Launch MyApp",
            "type": "cppdbg",
            "program": "MyApp",
            "args": [ "${input:arg}" ],
        }
    ],
    "inputs": [
        {
            "type": "promptString",
            "id": "arg",
            "description": "Enter argument",
            "default": "something"
        },
    ]
}

However, this only allows me to enter a single argument. To enter multiple, I can have multiple entries in the args array, one for each argument.

Unfortunately this does not scale when I want to test different combinations of zero to N command-line arguments, as it will require editing launch.json before every invocation.

Is there a way to have VSCode prompt me for all the command-line arguments on a single line, just as I would type them on a terminal?