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

[Justin Lu]

On Tue, 7 Mar 2023 23:15:14 GMT, Jonathan Gibbons <jjg 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.
>
> make/langtools/tools/compileproperties/CompileProperties.java line 252:
> 
>> 250:             try {
>> 251:                 writer = new BufferedWriter(
>> 252:                         new OutputStreamWriter(new FileOutputStream(outputPath), StandardCharsets.ISO_8859_1));
> 
> Using ISO_8859_1 seems strange.
> Since these are generated files, you could write them as UTF-8 and then override the default javac option for ascii when compiling _just_ these files.
> 
> Or else just stay with ascii; no one should be looking at these files!

Will stick with your latter solution, as since the .properties files were converted via native2ascii, it makes sense to write out via ascii.

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PR: https://git.openjdk.org/jdk/pull/12726