This commit merges changes that were developed in the "racket7" repo.
See that repo (which is no longer modified) for a more fine-grained
change history.
The commit includes experimental support for running Racket on Chez
Scheme, but that "CS" variant is not built by default.
Before this line, it says the function flows from providing module to requiring module.
After this line, it says the argument travels back from requiring moduleo to providing module.
I believe that argument supplying and function invoking should happen at requiring module, rather than providing module.
Although "macOS" is the correct name for Apple's current desktop OS,
we've decided to go with "Mac OS" to cover all of Apple's Unix-like
desktop OS versions. The label "Mac OS" is more readable, clear in
context (i.e., unlikely to be confused with the Mac OSes that
proceeded Mac OS X), and as likely to match Apple's future OS names
as anything.
Previously, on the example, the function was not anonymous, so no
`tempN' would appear on the error message.
The fixed example makes use of `flat-named-contract' on an anonymous
function, which resembles the snippet above it and demonstrates the
purpose of `flat-named-contract' better.
Using `syntax` to capture local binding information in the current
phase doesn't work with the set-of-scopes expander. Although the
example could be adjust to use `(quote-syntax car #:local)`, it
seems like too much detail at that point in the explanation.
A value that starts "1", "y", or "Y" enabled incremental mode
permanently (any value was allowed formerly), while a value that
starts "0", "n", or "N" causes incremental-mode requests to be
ignored.
Really, just improve when majors GCs are forced to trigger
further finalizations. This improvement makes `(collect-garbage)`
followed by `(collect-garbage 'incremental)` move more
reliably into incremental mode.
