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https://issues.apache.org/jira/browse/LUCENE-4021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13262175#comment-13262175
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Robert Muir commented on LUCENE-4021:
-------------------------------------
yeah we have to fix that Locale code i added.
The general problem is that java7 locales really shouldnt be parsed this way
(imo) but
with forLanguageTag.
Any way i can guarantee you this is gonna be messy even if you know what you
are doing
(e.g. http://bugs.icu-project.org/trac/ticket/8734).
And reproducibility between java6 and 7 is just out of the question.
> Locale representations don't round trip from toString->new Locale.
> ------------------------------------------------------------------
>
> Key: LUCENE-4021
> URL: https://issues.apache.org/jira/browse/LUCENE-4021
> Project: Lucene - Java
> Issue Type: Bug
> Reporter: Dawid Weiss
> Priority: Minor
>
> The script and extensions are not currently parsed. Seems like they were
> added in 1.7 only too so it'll probably require Java-version-specific
> workarounds.
> {noformat}
> public void testLocaleRoundTrip() {
> for (Locale locale : Locale.getAvailableLocales()) {
> String s = locale.toString();
> try {
> Locale back = LuceneTestCase.localeForName(s);
> assertEquals(locale, back);
> } catch (Exception e) {
> System.err.println("Failed roundtrip: " + s + " (" + e.toString() +
> ")");
> } catch (AssertionError e) {
> System.err.println("Not equals: " + s + " (" + e.toString() + ")");
> }
> }
> }
> {noformat}
> Example locales that don't pass.
> {noformat}
> th_TH_TH_#u-nu-thai
> ja_JP_JP_#u-ca-japanese
> {noformat}
> Interestingly, some that do pass the reverse trip are not .equal to their
> originals:
> {noformat}
> Not equals: sr_ME_#Latn (java.lang.AssertionError: expected:
> java.util.Locale<sr_ME_#Latn> but was: java.util.Locale<sr_ME_#Latn>)
> Not equals: sr_BA_#Latn (java.lang.AssertionError: expected:
> java.util.Locale<sr_BA_#Latn> but was: java.util.Locale<sr_BA_#Latn>)
> Not equals: sr__#Latn (java.lang.AssertionError: expected:
> java.util.Locale<sr__#Latn> but was: java.util.Locale<sr__#Latn>)
> Not equals: sr_RS_#Latn (java.lang.AssertionError: expected:
> java.util.Locale<sr_RS_#Latn> but was: java.util.Locale<sr_RS_#Latn>)
> {noformat}
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