We're having major problems with I18nResolver under 6.2.5. Everything was previously tested and working perfectly under 6.2.2.

This is effectively an API-breaking change that breaks a lot of the language text in our previously-released plugins, so now our UI is in shambles!

The two problems we have encountered so far:

1) Empty strings in the .properties file do not get resolved at all and it simply returns the key back. If I have a properties entry like this:

foo.bar=

Then 'i18nResolver.getText("foo.bar")' returns "foo.bar" in 6.2.5. It correctly returned "" in 6.2.2.

2) Trailing spaces are being stripped from property entries. If we have a property entry like this:

abc.def=Hello\u0020

(using the proper Unicode format for a trailing space, as shown above) then i18nResolver would return "Hello " in JIRA 6.2.2 but merely "Hello" in 6.2.5.

In PluginResourceLoaderInvocation:

    private Map<String, String> flattenResourceBundlesToMap(Iterable<ResourceBundle> bundles)
    {
[...]
                       final String value = stripToNull(bundle.getString(propertyKey));
                        if (value != null)
                        {
                            map.put(key.intern(), value.intern());
                        }

The call to Apache Commons stripToNull deletes all of the leading and trailing whitespace (bug #2). It also replaces empty strings with nulls. Then the conditional decides not to add the string at all if it's null (bug #1).

The above class is annotated as being new as of 6.2.3, but we didn't have a chance to test 6.2.3 or 6.2.4. If you think it's a problem there too, feel free to adjust the Affects Versions.