Thank you for doing this. CLIs are an interesting beast, and I should be available to contribute and/or comment next week.
~slg -------- Original Message -------- On Jul 24, 2021, 1:14 PM, Siddhartha Kasivajhula wrote: > Hello folks, > If you ever have a need to write a command line script in Racket, you may be > interested in the package I've just put up. Normally you'd write such scripts > using Racket's built-in > [command-line](https://docs.racket-lang.org/reference/Command-Line_Parsing.html#%28form._%28%28lib._racket%2Fcmdline..rkt%29._command-line%29%29) > or > [parse-command-line](https://docs.racket-lang.org/reference/Command-Line_Parsing.html#%28def._%28%28lib._racket%2Fcmdline..rkt%29._parse-command-line%29%29) > form. These offer a lot of functionality, but it takes time to learn how > they work and the syntax is somewhat idiosyncratic. So, I've written a #lang > that allows you to achieve the same functionality but with more familiar and > extensible syntax, [#lang cli](https://docs.racket-lang.org/cli/index.html). > > The language is composed of 5 forms - help, flag, constraint, program, and > run. With these 5 forms, you get all of the functionality of the built-in > parse-command-line form, and with syntax that's much simpler. In fact, the > nontrivial forms of the language simply use Racket's normal function > definition syntax, so there's very little to learn -- you basically write > normal functions and they are implicitly wired to accept their inputs via the > command line. > > At the moment, the functionality offered is at parity with the built-in > forms, but there are some planned additions that would make it more powerful, > including [composable > commands](https://github.com/countvajhula/cli/issues/3), [generalized > constraints](https://github.com/countvajhula/cli/issues/6), and [argument > schemas](https://github.com/countvajhula/cli/issues/7). > > So if you write command line scripts, I encourage you to give it a try. > > I also coincidentally came across the package > [natural-cli](https://docs.racket-lang.org/natural-cli/index.html) by Sage > Gerard. Looks like it provides some interesting features and in particular > subcommands, which are absent in #lang cli. It very well may be that this > package should be leveraged for semantics in #lang cli in the future (Sage if > you'd like to add anything about what this package offers, please do). > Enjoy, > -Sid > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > [https://groups.google.com/d/msgid/racket-users/CACQBWFnevJaRg61xLv6ayps-ihGpuUFUFEVbLTH7m929tpex3Q%40mail.gmail.com](https://groups.google.com/d/msgid/racket-users/CACQBWFnevJaRg61xLv6ayps-ihGpuUFUFEVbLTH7m929tpex3Q%40mail.gmail.com?utm_medium=email&utm_source=footer). -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/rxdVJcMmBhW1Xtw4KZEtdl0qySeqWsbpKhW5wewaDeXGOm8PyjMWV4Q_fKXCzIitRyxDtZjRx4DtjMTi398FwMM1V3Y4lLX91urE3_N2zlE%3D%40sagegerard.com.
