GitHub user sebbASF opened an issue:
https://github.com/apache/incubator-ponymail/issues/415
Bug: MboxoReader needs to return all data for a read() call
The MboxoReader currently overrides the _read method but does not work
properly if the caller uses the read() call (i.e. where the size is none).
At present it may require two calls to read() to return all the data, which
is not how the method is expected to behave.
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