(For those interested: this is intented to extend the space between
characters to help people learning morse code by giving the brain some
extra time for acoustical pattern recognition.)
Note: I slightly cleaned up the submitted patch for minor stylistic
issues, and changed the default for the new -c option to be identical
to -w.
Submitted by: "Stephen P. Cravey" <cravey@gotbrains.org> N5UUU
MFC after: 2 weeks
PR: bin/81831
a recent Press Association release) was added to Morse code by the ITU in
December. @ was previously used for the SK prosign, which is now spelt &.
Obtained from: http://en.wikipedia.org/wiki/Morse_code
Avoid using parenthesis enclosure macros (.Pq and .Po/.Pc) with plain text.
Not only this slows down the mdoc(7) processing significantly, but it also
has an undesired (in this case) effect of disabling hyphenation within the
entire enclosed block.
