Re: [PATCH] Modernize, improve and/or extend tests `colon*.test.

[Ralf Wildenhues]

* Stefano Lattarini wrote on Sun, Aug 08, 2010 at 05:48:58PM CEST:
> At Sunday 08 August 2010, Ralf Wildenhues wrote:
> > * Stefano Lattarini wrote on Sun, Aug 08, 2010 at 05:35:57PM CEST:
> > >   foo=`extract_makefile_deps tgt2 Makefile`; echo x"$foo"x

> > More or less, yes.  I'd avoid the command substitution fork by
> > letting extract_makefile_deps set some variable instead of
> > printing.
> So the we'd have move the comamnd substitution inside the function? 
> ;-)

No.  You save a fork with

  foo ()
  {
    ...
    foo_result=bar
  }

  foo ARG...
  test "$foo_result" = ...

which we've been doing a lot in Libtool and Autoconf lately.  Since it's
not quite as intuitive, an alternative is

  foo ()
  {
    ...
    eval "$1=bar_suitably_escaped"
  }

  foo result_var ARG...
  test "$result_var" = ...

Cheers,
Ralf