On Wed, 16 Apr 2025 17:44:36 GMT, Stuart Marks <sma...@openjdk.org> wrote:

>> src/java.base/windows/native/libjava/java_props_md.c line 663:
>> 
>>> 661:                            &sprops.format_country,
>>> 662:                            &sprops.format_variant,
>>> 663:                            &format_encoding_unused);
>> 
>> A cleaner change would be to modify SetupI18nProps to remove the encoding 
>> argument. 
>> SetupI18nProps is a file local static function, there are no other uses.
>> And drop the dummy variables.
>
> The main focus of this commit is to straighten out the logic between the 
> platform-specific and platform-independent layers.
> 
> In the previous state of this file, tracing the origin of the properties on 
> Windows, I ended up following the origin of sprops.encoding all the way 
> through SetupI18nProps, only to find that was ignored entirely at the 
> platform-independent layer. So this change is an improvement in that it 
> clarifies where sprops.encoding comes from, and that SetupI18nProps does some 
> computations that end up being thrown away instead of being stored into a 
> shared data structure that's eventually ignored.
> 
> Of course that path is dead code and could be removed without changing the 
> behavior. But this code has a tortured history and it's not entirely clear 
> that it's correct in its current state. In fact @naotoj considered making 
> some changes in this logic 
> [JDK-8352917](https://bugs.openjdk.org/browse/JDK-8352917) but decided 
> against it. However it seems like a possibility that we might revisit this?
> 
> Also note that we're now talking about how Windows gets its encoding 
> information from the OS, and not how encoding information is transmitted up 
> through the layers into Java properties, which is the focus of this cleanup.
> 
> Anyway I'd like to hear from @naotoj on this. If we're certain the extra 
> stuff in SetupI18nProps is useless, we should clean it up now. But if there 
> might be a use for this information -- maybe stdin.encoding? -- then perhaps 
> it's better to leave it as is.

I belive they can be removed as they are no where used (and I don't think it 
will be used for `stdin.encoding` either) So I prefer removing those unused 
code now.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/24607#discussion_r2047728357

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