I'm curious - why do `path` and `convert` require ...

# clikt

[Rob Elliot]

I'm curious - why do path and convert require a NullableOption as the receiver, meaning I cannot use default before them?

I'd quite like to be able to have an option that specifies a file, with a default as a string, so I can then benefit from the validators on path, and apply my conversion (which effectively validates the contents of the file and return it in a single pass).

[AJ Alt]

It's discussed a bit in the docs. The final option value is calculated by calling transformAll(transformEach(convert(argv))). So you can't call convert after default (which is a wrapper around transformAll), since transformAll takes the output of convert.