PEP: Support for "wide" Unicode characters
paulp at ActiveState.com
Sun Jul 1 21:46:39 CEST 2001
Marcin 'Qrczak' Kowalczyk wrote:
> Thu, 28 Jun 2001 15:33:00 -0700, Paul Prescod <paulp at ActiveState.com> pisze:
> > In order to avoid imposing this cost on every
> > user, Python 2.2 will allow 4-byte Unicode characters as a
> > build-time option. Users can choose whether they care about
> > wide characters or prefer to preserve memory.
> I don't like it. Scripts will work under some builds of Python and
> not work in others.
Just as they do today. i.e. if you use import win32api or if you use a
> > Rejected Suggestions
> > The other class of solution is to use some efficient storage
> > internally but present an abstraction of wide characters
> > to the programmer. Any of these would require a much more complex
> > implementation than the accepted solution.
> But will work, as opposed to working only sometimes.
> If memory consumption is really a problem, I would definitely hide
> varying character sizes as an implementation detail.
Here are two relevant paragraphs from the version of the PEP I will
check in today:
Another class of solution is to use some efficient storage
internally but present an abstraction of wide characters to
the programmer. Any of these would require a much more complex
implementation than the accepted solution. For instance consider
the impact on the regular expression engine. In theory, we could
move to this implementation in the future without breaking
code. A future Python could "emulate" wide Python semantics on
narrow Python. Guido is not willing to undertake the
implementation right now.
This PEP represents the least-effort solution. Over the next
several years, 32-bit Unicode characters will become more common
and that may either convince us that we need a more sophisticated
solution or (on the other hand) convince us that simply
mandating wide Unicode characters is an appropriate solution.
Right now the two options on the table are do nothing or do
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