Use of newlines with --tagstring feature

[Colleen Josephson]

If I pass the option --tagstring "--------------------\n" the output
is prefixed with dashes and a slash and 'n', instead of dashes
followed by a newline. Similarly, if the tagstring contains a tab
code, '\t', a slash and a 't' are printed out instead of a tab.

The command I'm using is:

parallel --tagstring "-------------\n" -j +0 --eta
/usr/sbin/testframework --no-status  ":::" `find ~/tests -type f -name
"*.test"`

Any suggestions on how to get the newline out of tagstring, or an
alternative approach that will do something similar is appreciated.

Thanks,
-- 
Colleen