Crash report

locale.setlocale(locale.LC_CTYPE, 'ks_IN.UTF-8@devanagari') crashes.
locale.setlocale(locale.LC_CTYPE, 'ks_IN.UTF8@devanagari') just raises a locale.Error.

It's not just about length. Standard locale names in Windows (like 'English_United States.1252') are pretty long.

Tested and reproduced in 3.12, 3.13, 3.14, and main, on Windows 10.

Linked PRs

• gh-137273: Fix debug assertion failure in locale.setlocale() on Windows #137300
• [3.14] gh-137273: Fix debug assertion failure in locale.setlocale() on Windows (GH-137300) #137305
• [3.13] gh-137273: Fix debug assertion failure in locale.setlocale() on Windows (GH-137300) #137306