Re: Fix chdir-long.m4 caching

[Eric Blake]

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Hi Ralf,

According to Ralf Wildenhues on 9/25/2006 11:00 PM:
>> How about covering our tracks so this won't happen again?
> 
> Nice idea (I had it too but wasn't sure whether it could be done safely).
> Your patch has the logic the other way round, and it fails to work with
> shell indirections.

Indeed - I was just throwing the idea out for comment, and had not tested
it yet (or I probably would have noticed my backwards logic).

> I'm still not sure whether the following is safe.

It looks right to me - all it does is add a warning if the first argument
is literal but does not contain _cv_; otherwise it does not change
behavior.  I say go for the patch, as you have it written; and after we
figure out a test case to add to make sure we are triggering the warning
as expected.

- --
Life is short - so eat dessert first!

Eric Blake             address@hidden
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