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escaped values compatible with openssh (L<http://openssh.com/>).

This is perhaps more clear by example.

Let's say this is the command in question.

    ssh -o 'BatchMode Yes' %h 'ls -ald /tmp/'

And let's say our hostname is C<corky!wisp>, then the command becomes:

    ssh -o 'BatchMode Yes' corky ssh -o 'Batchmode\ Yes' wisp 'ls\\ -ald\\ /tmp'

=item B<%u>

Replaced with the username, if applicable.  When hostname contains an C<@>
character, for example C<jettero@corky>, the portion before the C<@> is
considered a username.

=item conditional replacement

If an element in a command exists in the form C<[%u]-l>, then the argument