Re: Just curious: who is using Pike for what?

On Wed, Dec 14, 2016 at 10:05 PM, Peter Bortas @ Pike  importmöte för
mailinglistan <[email protected]> wrote:
>>On Tue, 13 Dec 2016, Chris Angelico wrote:
>>>> upper_case("ß") == "ß";
>>> (1) Result: 1
>
>>> Python does:
>>>>>> "ß".upper()
>>> 'SS'
>
> Discussed this with grubba Yesterday. I don't think upper_case should
> do this. Besides sometimes (possibly supricingly) introducing more
> characters in a string it would break the
>     lower_case(upper_case(a)) == a
> symmetry.
>
> We should have a separate function for doing this in the Unicode
> module, but I can't come up with a good name for
> it. Unicode.upper_case() would not be particularly self
> documenting. Unicode.special_upper_case()?
>

The Unicode spec doesn't say that case conversions have to be
symmetrical. I don't particularly like the term "special", as it
implies that it handles _only_ the special cases; can't we use
"Unicode.upper_case"? In most situations, it's going to return the
same thing that upper_case does, so the choice between the two would
be down to whether you care about the string staying the same length,
or about the strict conversions.

ChrisA