* module/web/uri.scm (uri-encode): the hexadecimal percent-encoding %HH
is now uppercased as suggested by RFC3986:
"For consistency, URI producers and normalizers should use
uppercase hexadecimal digits for all percent-encodings."
* test-suite/tests/web-uri.test ("encode"): update tests.
* module/web/uri.scm (uri-encode): Change test to check for unreserved
chars instead of reserved chars.
* test-suite/tests/web-uri.test ("encode"): Add test.
* module/web/uri.scm (ipv6-regexp): IPv6 numeric addresses do not have
brackets. It's only in URIs that they have them.
(ipv6-host-pat, authority-regexp, parse-authority): Refactor ipv6
detection to fix a bug with |, and to extract IPv6 hosts from their
brackets. This way we can pass the uri-host directly to inet-pton.
(uri->string): If the host contains a `:', assume it is ipv6 and add
brackets.
* test-suite/tests/web-uri.test ("build-uri"): Adapt tests to assume
that the address returned by uri-host and passed to build-uri #:host
does not have brackets.
* module/web/uri.scm (valid-host?): Support dotted-quad notation
in IPv6 addresses.
(parse-authority): Support IPv6 literals.
* test-suite/tests/web-uri.test: Add and fix tests.
* module/web/uri.scm (valid-host?): Fix regexp to support
domain names starting with numbers.
* test-suite/tests/web-uri.scm: Add tests for above and
IP literals.
* module/web/uri.scm (parse-authority): Allow empty authorities, so that
we accept URIs of the form, file:///etc/hosts.
* test-suite/tests/web-uri.test ("string->uri"): Add tests.
* module/web/uri.scm (uri-error): New proc, throws to 'uri-error.
(validate-uri, uri-decode, uri-encode): Use uri-error.
* test-suite/tests/web-uri.test: Update for uri-error.
