Fix description of switch in tutorial

[yerke]

I am reading the code correctly, switch will return false if an optional parameter is missing.

[pacak]

You are absolutely correct, this is a derp on my side :)

doc2 is a crate that contains documentation and tutorials, but it's not published directly. Instead when you run its tests - it checks that all examples are correct, collects the expected output and generates files that are used for the documentation. In short - can you run cargo test -p docs2 - it should update documentation in bpaf crate itself and include this change to this MR?

[yerke]

@pacak Done. Thanks for the explanation. BTW, it seems that cargo test -p docs2 assumes that command line prompt is just % which is not always the case.

[pacak]

BTW, it seems that cargo test -p docs2 assumes that command line prompt is just % which is not always the case.

Hmm? I had to use some prompt, originally I used % which is zsh - shell I'm using, then I switched to $ - bash is a more popular shell. I don't think it matters much as long as we are talking about just the documentation.

Anyway, I appreciate your fixes, will try to make a new release soon-ish.

[yerke]

@pacak No, what I meant is that I have a CLI prompt that includes my machine name and the name of the directory, so I was getting many irrelevant diffs when I ran cargo test -p docs2.
Thanks for putting all that effort into writing documentation and tutorials. They are very handy.