GetDateFormat returning invalid short date for ky-KG (Kyrgyz - Kyrgyzstan)

Windows reports that the "short date" format (LOCALE_SShortDate) for ky-KG is:

d-MMM yy

The date format string contains picture codes. Other pictures codes are d, dd, ddd, dddd, M, MM, MMM, MMMM, yy, yyyy.

For english people, the resulting string that uses that date format would be:

16-Oct 21
\/ \_/ \/
d  MMM yy

Because MMM is taken to mean the "Abbreviated month as specified by a LOCALE_SABBREVMONTHNAME value, for example, "Oct" in English (United States)."*

And for English locales, those "abbreviated month names" would be:

You can use the GetDateFormat function to return you a date that follows the abbreviated month names for English.

So to format a date with the format string of d-MMM yy, using the en-US locale you would call something like: (pseudocode)

GetDateFormat(1033, LOCALE_NOUSEROVERRIDE, &systemTime, "d-MMM yy", buffer, bufferLen);

Returning a formatted string of the form:

• 16-Oct 21
  d.MMM yy

Now for Kyrgyzstan

Kyrgyz uses different abbreviations for its months; which makes sense since they don't speak English:

When i try the same call to GetDateFormat for the ky-KG locale:

GetDateFormat(1088, LOCALE_NOUSEROVERRIDE, &systemTime, "d-MMM yy", buffer, bufferLen);

I get a resulting formatted date string of:

• 16-окт. 21
           ^

Notice the extra . in there.

That doesn't match the short date format string:

• Expected: d-MMM yy
• Actual: d-MMM. yy

It's a bug, but how to work around it?

If Windows is telling me:

• that the "short date format" is d-MMM yy
• and that the abbreviated name of Октябрь is окт
• and Windows provides the function to format a date using those strings

Why is Windows generating a string that Windows says the string should look like?

It's a pain when you try to parse a date generated by Windows, and that date generated by Windows does not match the format the Windows says the format should be.

What is going on, and how do i fix it in a locale neutral-way?

Windows 10.0.19043.1237

Bonus Chatter

Kyrgyzstan is the only locale that doesn't use MM (i.e. numbers) in their short date.

Bulgaria and Turkmenistan have a short date format that includes fixed suffixes:

• Bulgaria: d.M.yyyy 'г.'
• Turkmenistan: dd.MM.yy 'ý.'

Neat! I don't know what the suffix abbreviations stand for; but it's just neat to see.

Bonus Reading

• glibc locale helper for Kirghiz