Changes the prose explanations of `hash-update` and `hash-update!` to more explicitly describe how the hash table is updated, instead of just deferring to the explanations in `hash-ref` and `hash-set` / `hash-set!`. Additionally, adds example code.
Lazy require benefits from using a lock on a namespace registry for
much the same reason as on-demand instantiation of ready modules. Make
lazy require use the lock that's alerady in place for on-demand
instantiation, and expose `namespace-call-with-registry-lock` for
other potential uses.
Thanks to @m4burns for tracking down the problem and its solution.
Related to #3805
It's not clear how many of these combinations work right now, but they
should be close, and the intent is that they're supported. I
succcessfully built for FreeBSD on AArch64 and Chez Scheme for NetBSD
on PowerPC32.
Replace lots of mostly-duplicated "Mf-<platform>" and "<platform>.def"
files with just a few "Mf-unix" and and "unix.def" files plus
configuration within "configure" and "workarea". Also change
"version.h" to infer more OS details (as was used for pb, anyway).
This change simplifies setting up configurations for different
platforms, and it makes it easier to share among similar
configurations.
Document the fact that `prop:object-name` takes precedence for the
`object-name` result, and make printing also use `object-name` instead
of the propcedure's name when they're differet.
Also, repair constructor-style printing of a transparent structure
type that has `prop:object-name`.
Closes#2585
Link "liblz4.dll" with the right LZ4 library for /MT mode. It looks
like VS 2017 links anyway, but VS 2015 (and probably earlier) does not
link with the wrong library.
In a normal build, "liblz4.dll" is not needed, but it's linked in case
it turns out to be useful to compress or decompress boot files. A
normal build will construct boot files with the intended final
compression, at least when all the right flags are passed around to
the right places.
Fix the permissions integer. Also, for the benefit of tests running in
a container, use `file-or-directory-permissions` instead of another
`open-output-file` to check permissions.
The inlined version of `in-value` in a `for` form did not bind the
left-hand identifier at the right layer relative to other bindings in
`for/fold`, which caused the inlined `in-value` to behave differently
than a non-inlined `in-value`. Confusing about this `in-value`, in
turn, had led to incorrect documentation on `for/fold`.
It would be nice to clean up a little more of the evaluator and
availability of bindings in `for/fold`, but doing so runs a
significant risk of breaking existing code (unlike fixing `in-value`,
which behaved even worse and where the repair seems less likely to
break existing programs).
Closes#1659 (again)
Add a `#:permissions` optional argument that is a permissions integer
in the same style as `file-or-directory-permissions` and that is used
when a file is created. On Unix, the given permissions are combined
with the process's umask.
Closes#1654
Making `syntax-local-lift-require` during `#%module-begin` expansion
provides a solution to a long-standing problem with composing
languages via `#%module-begin`, where the bindings of some lanuage
should be made available for expanding the module body by
`#%module-begin` expansion (i.e., the language is *not* the initial
import). If the language does not support `require`, then there was no
way to expand and expose the language import dependency.
Closes#1352
When a test run by `--place` mode doesn't increment any rackunit
counts, treat the count as 0 instead of 1 for consistency with
`--direct` and `--process` modes.
Closes#1358
Set the source location of a function call that implements an indirect
import to be the original identifier, so a use-before-definition error
has the right location.
Closes#1324
When you search in a page other than the main search page, the search
request is communicated as a "q" query in the URL. Meanwhile, the search
page generally propagates all query arguments, as a kind of store-passing
facility, which means that the "q" query was passed along. Avoid adding the
"q" to search results, so it doesn't get propagated so much.
Closes#936
As noted by @rmculpepper, using an underlying input port as an evt to
indicate more SSL input is not right if data can be pumped from the
underlying input port meanwhile. This commit uses progress evts (real
or synthesized) to avoid that problem.
[The commit include more whitespace changes than I'd normally like,
but it seems like some past tabify went wrong.]
Closes#3804
Match BC's long-standing behavior of only flushing the original output
and error ports on input from the original input port when the output
and/or error port is a terminal port.
During the time that the procedure in a guard-evt is called by `sync`,
it's possible for the `sync` evt choice to become determined. If the
guard-evt procedure then returns a choice-evt, the BC implementation
of `sync` could lose track of the selected evt; the selection is
represented by an index, and choice-evt splicing can shift indices.
Possibly related to #3004
Although retaining the original stream argument to `stream-ref`,
`stream-tail`, or `stream-take` can enable a better error message if
the stream runs out of elements too soon, it can also interfere with
the intended memory use of a stream.
Closes#2870
