RFR: 8301991: Convert l10n properties resource bundles to UTF-8 native [v5]

[Justin Lu]

On Fri, 17 Mar 2023 22:27:48 GMT, Justin Lu <jlu at openjdk.org> wrote:

>> This PR converts Unicode sequences to UTF-8 native in .properties file. (Excluding the Unicode space and tab sequence). The conversion was done using native2ascii.
>> 
>> In addition, the build logic is adjusted to support reading in the .properties files as UTF-8 during the conversion from .properties file to .java ListResourceBundle file.
>
> Justin Lu has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Close streams when finished loading into props

Something thing to consider is that Intellj defaults .properties files to ISO 8859-1. 

https://www.jetbrains.com/help/idea/properties-files.html#encoding

So users of Intellj / (other IDEs that default to ISO 8859-1 for .properties files) will need to change the default encoding to utf-8 for such files. Or ideally, the respective IDEs can change their default encoding for .properties files if this change is integrated.

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PR Comment: https://git.openjdk.org/jdk/pull/12726#issuecomment-1492640306