Re: HTTP::Request::Common::POST and UTF-8
- From: "Alan J. Flavell" <flavell@xxxxxxxxxxxx>
- Date: Tue, 27 Sep 2005 21:31:08 +0100
On Tue, 27 Sep 2005, Stephen Collyer wrote:
> I've investigated to the point that I can see that the problem
> seems to occur at line 53 of URI::_query::query_form:
>
> 53:b $self->query(@query ? join('&', @query) : undef);
Please understand that I'm thinking aloud here: I don't have the
answer, but, as no-one else has stepped in, I thought my ponderings
might just be helpful.
Hmmm, the version of _query.pm that I'm looking at here (which
might be old) invokes URI::Escape::escapes{$1}
Looking at http://search.cpan.org/~gaas/URI-1.35/URI/Escape.pm
it appears there are two different functions, for escaping in an
8-bit context and for escaping in a utf8 context. As it says, they
produce different results, even for the characters from 128-255.
However, if I look at the URI/Escape.pm that's installed hereabouts,
it describes itself as Revision 3.21, and shows no sign of being
capable of escaping any character above 255.
> This routine escapes the data in the POST content array, and
> all seems well up to line 53 where it sets the content of the
> query.
Seems to me that one needs to take a look whether there's any
machinery, in the version that you're using, for invoking the
utf8-context escapes, and, if so, how to trigger it. I'm not by any
means certain that the mere utf8-ness of a string would be the right
lever to trigger this, to be honest.
> When I look at $self->query(), all UTF-8 chars seem to have
> been converted to +. This looks bizarre as it's only doing a join.
My hunch is that they've been offered to a routine that can only
escape the characters 0-255.
hope this is vaguely useful at least.
.
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