Johannes Altmanninger 0c92c7d8ac Fix remote path escaping for rsync and scp completions
They need to be escaped twice, for the local and the remote shell.
Also don't suggest local files as rsync remote paths (-a -> -xa) and
fix completion for remote paths containing multiple consecutive spaces.

Fixes #1872
[ci skip]
2020-01-13 10:30:57 +01:00
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