Re: [HACKERS] Re: [SQL] plpgsql error

Tom Lane wrote:
>Any shell-scripting gurus on the list? I thought this would be an easy
>fix, but I'm having some difficulty getting the configure script to
>produce a fully-expanded value for libdir. Given a shell variable that
>may contain $-references to other variables, the requirement is to
>assign to a new variable an expanded value containing no $-references.
>I tried
> expanded_libdir="$libdir"
>but that just gets you an exact copy, no recursive expansion. A few
>other ideas didn't work either; the Bourne shell doesn't seem to want
>to re-expand text it's already expanded. Suggestions?

Use eval:

$ v1=DF_\$EIFFEL_GTK
$ echo $v1
DF_$EIFFEL_GTK
$ v2=$v1
$ echo $v2
DF_$EIFFEL_GTK
$ eval v2=$v1
$ echo $v2
DF_/usr/lib/eiffel-gtk
$

but if it gets too complicated, you might have to change to Perl

--
Oliver Elphick Oliver(dot)Elphick(at)lfix(dot)co(dot)uk
Isle of Wight http://www.lfix.co.uk/oliver
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