Doc: Document known problem with Windows collation versions.
Warn users that locales with traditional Windows NLS names like
"English_United States.1252" won't provide version information, and that
something like initdb --lc-collate=en-US would be needed to fix that
problem for the initial template databases.
Discussion:
@@ -985,6 +985,15 @@ CREATE COLLATION ignore_accents (provider = icu, locale = 'und-u-ks-level1-kc-tr
approach is imperfect as maintainers are free to back-port newer
collation definitions to older C library releases.
</para>
+ <para>
+ When using Windows collations, version information is only available for
+ collations defined with BCP 47 language tags such as
+ <literal>en-US</literal>. Currently, <command>initdb</command> selects
+ a default locale using a traditional Windows language and country
+ string such as <literal>English_United States.1252</literal>. The
+ <literal>--lc-collate</literal> option can be used to provide an explicit
+ locale name in BCP 47 format.
+ </para>
</note>
</sect2>
</sect1>
