Dear James,
No need to use strong language like in the answer I received below. Some
of us are occasional users (thanks Bob for the apologising email).
Furthermore you had all the info to solve the issue, see below.
Clue:
I found a mail in the gnu mail-list from another user called Kevin th
smu johnson wrote:
> Hi,
>
> I hope this is the right place to ask this. I think a very handy argument
> to add to the list of aliases for character classes in tr would be a new one
> that behaves like [:cntrl:], except that it will not include newline
> characters in that class.
>
> The reason
