The python plugin use weak references for hooks, which might let a
necessary object disappear if the callback of a timer hook unhooks
itself.
Signed-off-by: Celelibi <celelibi@gmail.com>
Python sometime calls flush() on sys.stdout or sys.stderr.
In particular, it might do so when an exception is raised. This fixes
the second error message that was generated in such cases.
Signed-off-by: Celelibi <celelibi@gmail.com>
* Make sure `help()` doesn't cause hexchat to hang
Replace `pydoc.help` with a copy of `pydoc.Helper` with an empty
`StringIO` instead of stdin
* Handle BytesIO vs StringIO on 2.7
