> In practise you should (as you have found out) not rely on unspecified
> behaviour.
>
> You should use 'exit' to terminate a shell.
ok, i'll replace returns by exits... hope that exit will terminate only the
script being executed, not the one that called it :o)

thanks for your help,
lubos

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Lubos Vrbka
National Centre for Biomolecular Research
Masaryk university, Brno, Czech Republic

shnek@chemi.muni.cz
http://www.chemi.muni.cz/~shnek
tel. +420 541 129 508
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