It's not available with musl, either, musl intentionally
doesn't provide a preprocessor test, and we're avoiding
(for now) `configure`-time tests in the style of autoconf.
original commit: a9bfb72027fc83ed6bb690d033bc6fed0629dba7
Don't run cptypes, when cp0 is disabled, for example with
(run-cp0 (lamba (cp0 x) x)
This is easier to understand because run-cp0 is a single point to control
all the cp reductions. The reductions in cptypes can be independently disable
using enable-type-recovery.
original commit: b23645e669fbf02806a261a2d87160fdbe06db93
Use “cmd.exe” on Windows. This enables us to have a list (of length one on
macOS and Windows) of launcher executables on all platforms, and use
send-url/unix, now renamed to send-url/simple, to launch all URLs without a
query or fragment.
Since we need send-url/trampoline for URLs containing a query or fragment in
the default case on all OSes, simplify the code and always use it for such
URLs.
Unix: Cut down all-unix-browsers: add xdg-open, which is standard and can
launch applications for files instead of a browser, like the macOS and
Windows equivalents; remove defunct browsers galeon, camino, skipstone,
htmlview, and the rare dillo. Make opera use try-remote, which is identical
to the code it was using. xdg-open cannot handle queries or fragments in
URLs, so for this case factor out send-url/trampoline from send-url/win and
use it.
macOS: Remove try-to-find-macosx-users-browsers, and use “open” instead of
“osascript”; “open” uses the user’s configured browser. As before, it is
still possible to specify a particular browser.
Windows: Shorten and simplify the justification of the trampoline, which is
mostly out of date, though the trick is still needed.
Use the high bit of a byte to continue instead of the low bit.
That way, ASCII strings look like themselves in uncompressed fasl
form.
original commit: 89a8d24cc051123a7b2b6818c5c4aef144d48797
Source locations are attached to functions for backtraces. With
traditional Racket, those source locations are connected to the
machinery of `current-write-relative-directory` and
`current-load-relative-directory` to avoid absolute paths, but that
machinery is difficult to integrate into the Racket CS compilation
model. So, since they're "just" for stack traces, save only a couple
of elements of the path.
Although some of them probbably do not matter (while some certainly
do), avoid various possible problems by always using a locally
determinsitic replacement for `gensym`.
Use newly added support for uninterned symbols (as opposed to gensyms)
in the Chez Scheme layer. Using uninterned symbols reduces
non-determinsitsm in the build.
The change to use Chez Scheme uninterned symbols exposed problems with
the way that Racket-level uninterned symbols (formerly implemented
with gensym) are handled in ".zo" files. The problem is that some
uninterned symbols are marshaled with `racket/fasl`, which is not
consostent with those that are marshaled by Chez Scheme's `fasl`. This
patch fixes those problems by ensuring that uninterned symbols are
always lifted to the level of a Chez Scheme `fasl` for a complete
linklet bundle.
Uninterned symbols are slightly more expensive to allocate than 0- or
1-argument calls to `gensym`, but they're much cheaper to hash (and
print). They're also more consistently distinct when unfasled, and the
fasled form is determinsitic.
original commit: 3167083008031b1f880e76a6f573563c7d9c888c
Change the way names are generated for pieces of the implementation of
a keyword-argument function. These functions are not accessible as
values, so the names don't matter for printing a function, but the
names can show up in stack traces.
