[tex-k] A bug? Maybe just a terrible inconvenience to work around...
Tue, 17 Sep 2002 00:34:37 +0100
Martin Schroeder <firstname.lastname@example.org> writes:
> AFAIK despite the common usage, "~" is not the valid symbol in
> URIs; it must be encoded. The relevant rfc or the html-spec
> should tell you how. :-)
I beg to differ; RFC 2396 (which supersedes 1738 that used to
recommend escaping the ~) says:
2.3. Unreserved Characters
Data characters that are allowed in a URI but do not have a reserved
purpose are called unreserved. These include upper and lower case
letters, decimal digits, and a limited set of punctuation marks and
unreserved = alphanum | mark
mark = "-" | "_" | "." | "!" | "~" | "*" | "'" | "(" | ")"
Unreserved characters can be escaped without changing the semantics
of the URI, but this should not be done unless the URI is being used
in a context that does not allow the unescaped character to appear.
G.2. Modifications from both RFC 1738 and RFC 1808
The tilde "~" character was added to those in the "unreserved" set,
since it is extensively used on the Internet in spite of the
difficulty to transcribe it with some keyboards.