Message155344
| Author |
tchrist |
| Recipients |
Arfrever, Nicholas.Cole, ezio.melotti, inigoserna, loewis, poq, tchrist, vstinner, zeha |
| Date |
2012年03月10日.18:57:37 |
| SpamBayes Score |
8.172856e-09 |
| Marked as misclassified |
No |
| Message-id |
<3652.1331405845@chthon> |
| In-reply-to |
<4F5BA345.3080802@v.loewis.de> |
| Content |
>Martin v. L=C3=B6wis <martin@v.loewis.de> added the comment:
>> Martin, I think you meant to write "if w =3D=3D 'A':".
>> Some very common characters have ambiguous widths though (e.g. the Greek =
>alphabet), so you can't just raise an error for them.
>That's precisely why I don't think this should be in the library, but
>in the application. Application developers who need that also need
>to concern themselves with the border cases, and decide on how
>they need to resolve them.
The column-width of a string is not an application issue. It is
well-defined by Unicode. Again, please see how we've done it in
Perl, where tr11 is fully implemented. The columns() method from
Unicode::GCString always gives the right answer per the Standard for
any string, even what you are calling ambiguous ones.
This is not an applications issue -- at all.
--tom |
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