On approximately 3/22/2009 8:48 PM, came the following characters from
the keyboard of Terry Reedy:
One of the disappointments of CPython 3.0 on Windows is that the switch
to unicode for text (str), coupled with the continued use of a
unicode-oblivious (obtuse) user interface (MS 'Command Prompt'), means
that print can no longer print all str strings, or all legal Python code
(as in a traceback).
Different people have tried and failed fix this bug by fiddling with
'Command Prompt' configeration. This would make a useful summer
project, though I don't know if it would involve enough coding. Call
the project something like 3.0 Unicode UI Improvement.
I see two possibilities.
1) Find an C-coded open-source C-P replacement whose author will license
to PSF and, as needed, modify or integrate it with CPython.
2) IDLE does much better but its support seems to still be imcomplete.
Upgrade tk/tkinter/IDLE (wherever the problems lie) and make IDLE's
shell an alternate UI.
If Windows (or other OSes) (to be investigated) does not reliably come
with a full unicode font (at least current BMP), is there a public
domain or open license font that we can include?
One can, of course, set CMD into Latin-1 mode (chcp 1252)... not sure
how Python reacts to that, as I've only used it with Perl, until I gave
up on Perl's Unicode support (which someone finally seems to be fixing,
but then there is CPAN to improve). But that doesn't solve the font
problem, nor characters above 255.
One can set CMD into Unicode mode (chcp 65001)... not sure how Python
reacts to that either. But even then...
CMD will only use fixed-width fonts, and none of the standard XP ones
seem to contain all of Unicode. Not sure if that has improved on Vista
or 7, as they don't run here.
It _would_ be nice to get this resolved, somehow.
--
Glenn -- http://nevcal.com/
===========================
A protocol is complete when there is nothing left to remove.
-- Stuart Cheshire, Apple Computer, regarding Zero Configuration Networking
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