the package installer
and make DrRacket have two separate menu items, one for installing a package
(which now looks simpler again) and one for doing all of the things you can
currently do with the package system in a GUI
The previous version was broken in its inconsistent treatment of
multiple values, which was motivated by an `in-generator' use
case. (`in-generator' should be fixed too now.) The new version is
much simpler since there's no need for three almost-exact copies of the
same code.
There are many cases where you just want to use some other tool like
`#:break' to stop the iteration, so no need to make up a bogus stop
value and no need to spend time checking it.
Mainly reogranize the code + exports + docs of the additional list
convenience functions.
Also, add a custom printer to a "running" struct in
`racket/private/promise', so there's a sensible output if the value
happens to leak outside of a promise (eg, when debugging).
Matthew suggests that using exceptions for failure
in the implementation of `subtype` is a performance
problem. This commit removes all use of exceptions
for failure in subtype.rkt, replacing it with the
standard Racket #f/value option.
Extensive use is made of the `subtype-seq` form,
which is basically do-notation for the subtyping
monad.
Creating a stand-alone executable could slow down a program,
because bytecode embedded in an executable was not treated
in the same way as bytecode loaded from files. The difference
was in on-demand parsing of bytecode --- and now it's enabled
for embedded bytecode, too.
The indirection uses a "local-redirect.js" script to rewrite
the document links to local links within the browser. This mechanism
is a step towards distributing compiled packages that include
already-built documentation, where paths to other documentation
can be different than in the build environment.
If the links are not rewritten, they are queries to
"pkg-docs.racket-lang.org", with the idea tha such a server will exist
for reading all package documentation online. Also, a package's
documentation that refer to documentation for uninstalled packages,
in which case the corresponding links will not get rewritten and
will continue to point to the server.
Rendering the "local-redirect.js" script spends a lot of time just
converting among different path formats. Various library changes in
this commit are aimed at speed up those conversions, but the big
improvement came from a `path->url-string' that shortcuts conversion
os simple Unix paths.
