Re: test suite failures because cmp behaves oddly

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Johannes Sixt <johannes.sixt@xxxxxxxxxx> writes:

> Does anyone know how 'cmp' can signal success when its output is redirected 
> to /dev/null, even if the compared files are different?
>
> $ cmp M.sum actual7.sum; echo $?
> M.sum actual7.sum differ: char 20, line 2
> 1
> $ cmp M.sum actual7.sum > /dev/null; echo $?
> 0
> ...
> Has anyone seen something like this?

I vaguely recall this reported long time ago from one of the
regulars on the list, but googling or gmane search came up
empty.




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