The `from` string argument is converted to a regexp and cached. When `from` is
a mutable string this can cause wrong results in the following calls
to string-replace. So the string is first converted to an immutable string to
be used as the key for the cache.
When `place` expands, the body of the `place` form is placed into a
`(module* place-body-<n> #f ....)` submodule.
The `place` form previously placed its body in a lifted function,
where the function's exported name was based on
`(current-inexact-milliseconds)`. The generated submodules have
deterministic names, so that compilation is deterministic, and
submodule names don't collide (unlike exported function names) when
multiple `place`-using module are imported into some other module.
Also, using a submodule avoids the problem that the clock doesn't
change fast enough on Windows.
Those aliases were moved out of `#%kernel` as part of the
determinstic-bytecode changes, but putting them in
`racket/private/pre-base` meant that they weren't included in
`mzscheme` or Pretty Big. The new location is with `let/cc`, which
makes more sense, and makes them picked up by `mzscheme` and Pretty
Big.
`net/url` provides functions for both converting strings
and paths to and from URLs.
`net/url` also includes functions for creating (pure and import)
network ports. This functionality `require` the HTTP client stack
which is unnecessary when URLs simple need parsing for their
"bits".
New library: `net/url-strings` handles `url->string` and `string->url`
(and also the related `path->url` and `url->path` functions). This is
required by net/url for compatability.
`net/url-exception.rkt` is factored out for use by both libraries.
- See also racket/net changes for T&D
url-string.rkt changes requested by mflatt
url-strings.rkt is now called url-string.rkt
identifiers from url-string.rkt are reprovided by url.rkt
using (all-from-out "url-string.rkt") instead of explicit
exports
T&D for url-strings-branch which separates URL parsing from
url network actions.
url-string changes requested by mflatt
url-string has been renamed from url-strings
documentation and tests reflect that
