Double-clicking file with non-ASCII path can fail to open on Windows

[neilccbrown]

It seems there is a long-standing problem with the Java launcher and non-ASCII paths on Windows. See this open Java bug: https://bugs.openjdk.org/browse/JDK-8124977 The result is that with BlueJ, if you double-click a package.bluej file in a directory with non-ASCII characters, it can fail to load, usually with a message about being unable to extract the archive.

This answer on Stack Overflow suggests a work-around involving JNA but it's quite hacky as it involves picking through the raw command line to deduce which bits are the actual arguments: https://stackoverflow.com/a/70573213