Bundled zip FileSystemProvider fails to recognize "readonly"?

[Francis Galiegue]

My recall is that at some point this flag was supported by the fs
provider but now the page seems to have changed:

http://docs.oracle.com/javase/8/docs/technotes/guides/io/fsp/zipfilesystemproviderprops.html

Did I misread the documentation completely and it was never supported?

-- 
Francis Galiegue, fgaliegue at gmail.com, https://github.com/fge
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