bug#6900: mktemp: want option to make a fifo

[Paul Eggert]

On 08/23/2010 01:40 PM, John Reiser wrote:
> Two independent user requests [one of which
> includes code!] within a few months show a definite need.

The two requests would have been more convincing if they demonstrated
a definite need.  Neither did: they both just said the equivalent
of "we need a new option".

Ordinarily, plain "|" does a good job of creating temporary fifos
with a minimum of fuss.  Perhaps there are exceptional cases
where plain "|" doesn't suffice, but no examples have been given.
We need these examples in order to judge how important the
need is, in order to balance this need against the other need
of keeping coreutils simple and general.