* Stefano Lattarini wrote on Sun, Aug 08, 2010 at 06:06:04PM CEST:
> At Sunday 08 August 2010, Ralf Wildenhues wrote:
> > No. You save a fork with
> >
> > foo ()
> > {
> > ...
> > foo_result=bar
> > }
> >
> > foo ARG...
> > test "$foo_result" = ...
> >
> Yes, but how do you get foo_result in our case? ;-)
With sed, of course.
> > which we've been doing a lot in Libtool and Autoconf lately.
> Yes, but using XSI variable substitutions and shell arithmetic, not
> complex sed scripts.
That's not what I meant. We are using more than one strategy to speed
up things.
> Or am I missing something?
I think you are. You proposed
result=`foo ...`
test "$result" = ...
which is an extra fork over the above, regardless of what foo does
internally.
Cheers,
Ralf
