On Sun, Feb 25, 2007 at 05:48:17PM +0000, David Laight wrote:
> On Sun, Feb 25, 2007 at 06:35:52PM +0100, Manuel Bouyer wrote:
> > > 
> > > .for file in ${MYFILES}${n::=n}
> > > 	cp ${file} dir/$file${n:[#]}${n::=$n n}
> > > .endfor
> > 
> > Well, I don't claim to understand it but it seems to work.
> 
> ${<var>::=<str>} assigns <str> to $<var> and expands to nothing.
> ${<var>:[#]} returns the number of 'words' in $<var>.
> 
> So on the '.for' line we set ${n} to "n".
> On the 'cp' line we generate the number of words in "n" ie 1,
> the set ${n} to "${n} n" or "n n".
> Rinse and repeat.

OK, thanks for the course !

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la difference
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