Am Samstag, 18. März 2006 16:11 schrieb Angus Leeming:
> Georg Baum <[EMAIL PROTECTED]> writes:
> Just a second... What does
> foo || bar && baz
> mean? Does it mean:
> 1)
> * Run "foo".
> * If "foo" fails, run "bar".
> * If "foo" succeeds, run "baz".
> Or does it mean:
> 2)
> * Run "foo".
> * If "foo" fails, run "bar".
> * If "bar" succeeds, run "baz".
>
> My understanding is that 1) is how the shell will interpret things.
> My understanding of your patch is that you think 2) is the way things
work...
I believe that it is like this:
3)
* Run "foo".
* If "foo" fails, run "bar" and "baz".
* If "foo" succeeds, run "baz".
(left to right evaluation, no precedence of && over || and vice versa)
My shell (bash, version 2.05b) agrees with me here.
> Change:
> test -d lib || mkdir lib && cd lib && pthon ...
> to:
> test -d lib || mkdir lib; cd lib && pthon ...
I will do the change nevertheless, since I don't know how other shells
will interpret it.
Georg
