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the C<--no-harness> format plus lists of what any dependency queries actually select.

=item B<--merge>, B<--no-merge>

By default, writes to stderr in tests are passed directly through to the console (but see below).

However, as STDERR is unbuffered, this tends to make the console look very ugly and
the output are only marginally in sync with the ordinary harness output.

Using C<--merge> makes the harness merge stdout and stderr as one, which makes them
synchronized. However, the output is no longer visible unless C<--verbose> is used.

If any of the options C<--archive>, C<--savedirectory> or C<--workdirectory> are given, merging
is turned on, in order to force the output to the result 'tap' files. If this is not desired,
use C<--no-merge> explicitly.

=item B<--configuration E<lt>cfgfileE<gt>> (or B<--cfg ...>)

By default, the test suite is required to have a configuration file (even if it's empty).
With this option, another configuration file can be used instead.