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Matthew Flatt 84b58d9bae expander: more flexible top-level #%app expansion 
Adjust top-level compilation to accomodate an `#%app` macro that
expands to definitions. Allowing `#%app` to expand to a non-expression
is more consistent with expansion in a module.

There's still an issue with top-level expansion where

 (define-syntax-rule (#%app id)
   (begin
     (define-syntax (id stx) 'ok)
     id))

does not work, because the kind of partial expansion used for the top
level doesn't trigger `#%app`, and so the macro and use are expanded
together in a `begin` instead of separately. Changing that would be
subtle and maybe not worthwhile for the top level. Also, although the
behavior of the (very) old expander may not be relevant anymore, it
behaved the same way on that example.

Closes #3728
2021-04-12 17:00:12 -06:00
.github Run workflow directly in VM (#3731) 2021-03-19 18:23:29 +01:00
pkgs expander: more flexible top-level #%app expansion 2021-04-12 17:00:12 -06:00
racket expander: more flexible top-level #%app expansion 2021-04-12 17:00:12 -06:00
.gitattributes Don't include git files in archives. 2010-05-12 01:46:05 -04:00
.gitignore Fix typo. 2019-06-21 12:32:37 -05:00
.lgtm.yml Fetch PB to start LGTM build 2020-08-07 12:17:17 +02:00
.mailmap Minor metadata changes. 2019-10-15 08:09:32 -04:00
.makefile makefile: clone single pb branch by default 2021-03-23 17:28:46 -06:00
build.md build guide: Chez Scheme for Racket is no longer in a separate repo 2021-04-07 06:50:42 -06:00
LICENSE update LICENSE to use "CS" and "BC" 2021-01-15 09:32:59 -07:00
Makefile makefile: clone single pb branch by default 2021-03-23 17:28:46 -06:00
README.md Fix README 2020-09-06 09:03:42 -04:00

README.md

Racket is a general-purpose programming language and an ecosystem for language-oriented programming.

This repository holds the source code for the core of Racket plus some related packages. The rest of the Racket distribution source code is in other repositories, mostly under the Racket GitHub organization.

Quick Start

Pre-built versions of Racket for a variety of operating systems and architectures, as well as convenient source distributions are available at

https://download.racket-lang.org

Racket comes with extensive documentation, including several tutorials. You can read all of this documentation, as well as documentation for third-party packages at

https://docs.racket-lang.org

Building from Source

For information on building Racket from this repository, see the Build Guide.

Contributing

Contribute to Racket by submitting a pull request, joining the development mailing list, or visiting the IRC or Slack channels.

By making a contribution, you are agreeing that your contribution is licensed under the LGPLv3, Apache 2.0, and MIT licenses. Those licenses are available in this repository in the files racket/src/LICENSE-LGPL.txt, racket/src/LICENSE-APACHE.txt, and racket/src/LICENSE-MIT.txt.

See the Racket Build Guide for more guidance on contributing.

The Friendly Environment Policy contains guidelines on expected behavior within the Racket community.

License

Racket is free software; see LICENSE for more details.