How do I set up the options to take optional values?

[FrankDMartinez]

I might not quite understand the documentation correctly but, suppose I want to set a certain quality to a default level if an option is not passed to the application, a different default value if the option is passed with no arguments, and a third value if the option is passed with certain arguments?

[jaredgrubb]

I dont think this is possible because I'm not sure how you would express that in documentation in a way that is understandable to the docopt algorithm. Do you have any ideas?

[FrankDMartinez]

Not immediately, no. That's why I asked.

[janwilmans]

I think #72 is talking about the same feature request and mentions an example

[isometriq]

maybe like this? [default: (.*), implicit: (.*)] (in the Options:  block)

[isometriq]

I would like validation too: https://github.com/docopt/docopt.cpp/issues/86

[janwilmans]

Maybe like this ?

Options:
--always_set=[<n>]     This has the current behaviour  [default: 10].
--always_set           This implicitly sets the value to 5 [value: 5]