gh-124969: Make locale.nl_langinfo(locale.ALT_DIGITS) returning a string again

[serhiy-storchaka]

This is a follow up of GH-124974. Only Glibc needed a fix. Now the returned value is a string consisting of semicolon-separated symbols on all Posix platforms.

• Issue: locale.nl_langinfo(locale.ALT_DIGITS) does not work #124969

---

📚 Documentation preview 📚: https://cpython-previews--125774.org.readthedocs.build/

[serhiy-storchaka]

@kulikjak, could you please test that the modified test is passed on Solaris?

[kulikjak]

Hi @serhiy-storchaka, thanks!

I tested the patch, and locale.nl_langinfo(locale.ALT_DIGITS) returns the same thing as before (which was the goal), and the tests now pass.

0:00:00 load avg: 1.98 [1/1] test__locale
test_alt_digits_nl_langinfo (test.test__locale._LocaleTests.test_alt_digits_nl_langinfo) ... 
  test_alt_digits_nl_langinfo (test.test__locale._LocaleTests.test_alt_digits_nl_langinfo) (locale='ja_JP') ... skipped "ALT_DIGITS is not set for locale 'ja_JP' on this platform"
  test_alt_digits_nl_langinfo (test.test__locale._LocaleTests.test_alt_digits_nl_langinfo) (locale='or_IN') ... skipped "ALT_DIGITS is not set for locale 'or_IN' on this platform"
test_float_parsing (test.test__locale._LocaleTests.test_float_parsing) ... ok
test_lc_numeric_basic (test.test__locale._LocaleTests.test_lc_numeric_basic) ... ok
test_lc_numeric_localeconv (test.test__locale._LocaleTests.test_lc_numeric_localeconv) ... ok
test_lc_numeric_nl_langinfo (test.test__locale._LocaleTests.test_lc_numeric_nl_langinfo) ... ok

There is currently no locale in known_alt_digits that has ALT_DIGITS set on Solaris, so I added the following two:

    'ar_AE.UTF-8': (100, {0: '\u0660', 10: '\u0661\u0660', 99: '\u0669\u0669'}),
    'bn_IN.UTF-8': (100, {0: '\u09e6', 10: '\u09e7\u09e6', 99: '\u09ef\u09ef'}),

(and adjusted those two in candidate_locales to include the *.UTF-8 suffix).

[serhiy-storchaka]

Is not ar_AE equivalent to ar_AE.UTF-8?

[kulikjak]

Is not ar_AE equivalent to ar_AE.UTF-8?

Unfortunately not. Mostly due to historical reasons, default locales on Solaris are not UTF-8. And I guess that for similar reasons, only the UTF-8 variants of these two include ALT_DIGITS.

[kulikjak]

Uh, so with this second change I found that 'ja_JP.PCK' on Solaris returns 101 symbols. At least those three tested match, which is nice.

The standard allows max 100, but considering that the last value is a new symbol (and not just a concatenation of those before), I can see why it is there. That said, I propose removing 'ja_JP.PCK' from tested locales (I don't think PCK is available on other platforms anyway).

[serhiy-storchaka]

Thank you for your help @kulikjak.

[miss-islington-app]

Thanks @serhiy-storchaka for the PR 🌮🎉.. I'm working now to backport this PR to: 3.12, 3.13.
🐍🍒⛏🤖

[bedevere-app]

GH-125804 is a backport of this pull request to the 3.13 branch.

[bedevere-app]

GH-125805 is a backport of this pull request to the 3.12 branch.