u:i.16 16
is what I used to expect
16 16$a.
to be
-
Björn Helgason
gsm:6985532
skype:gosiminn
On 28.2.2014 01:54, "chris burke" <cbu...@jsoftware.com> wrote:
> > The problem I am trying to point out is that the characters in _128{.a
> fall
> > in a no-man's land. They are ambiguous. Sometimes they are treated like
> > 8-bit extended ASCII. Sometimes they are treated like UTF-8 compression
> > characters.
>
> I don't agree that _128{.a. fall into a no-man's land.
>
> J text is utf8, so _128{.a. are ordinary bytes. They are not any kind of
> characters, since they are not valid utf8.
>
> Earlier versions of J (J5 and earlier?) treated them as 8-bit extended
> ASCII, but this is no longer the case.
>
>
> On Thu, Feb 27, 2014 at 3:14 PM, Don Guinn <dongu...@gmail.com> wrote:
>
> > Everybody wants to talk about handling APL characters. I'm for that too,
> > but first we need to make it clear on how to handle UTF-8 or
> UTF-whatever.
> > The problem I am trying to point out is that the characters in _128{.a
> fall
> > in a no-man's land. They are ambiguous. Sometimes they are treated like
> > 8-bit extended ASCII. Sometimes they are treated like UTF-8 compression
> > characters.
> >
> > u,U
> > þþ
> > shows how display got confused. Is it supposed to display UTF-8? Or is it
> > supposed to display 8-bit extended ASCII? Looks like it ran into an error
> > attempting to display it as UTF-8 so it switched to 8-bit extended ASCII.
> > ": output is always literal. So
> > #":u,U
> > 6
> > a.i.":u,U
> > 195 131 194 190 195 190
> > switched all the 8-bit extended ASCII to UTF-8. But sometimes it just
> puts
> > in � when it can't figure out what to do. Maybe it should have displayed
> > the 8-bit extended ASCII instead. The trouble is that the character þ is
> > ambiguous.
> >
> > The reason why 7 u: 254{a. is an error is because 7 u. specifically has
> > UTF-8 or ASCII as a right argument. 254{a. is neither. It is what I have
> > been calling 8-bit extended ASCII.
> >
> > Before we can even hope to effectively deal with APL characters we need
> to
> > be very clear on how to handle UTF-8.
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
> >
> ----------------------------------------------------------------------
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