On 10/14/13 9:51 AM, Akim Demaille wrote:
> Hi!
>
> I have this weird behavior that I do not understand: when running
>
> FOO=1 foo
>
> I do not expect FOO to remain in the env after foo was invoked, even
> if foo is a shell function. However it does, _if_ bash is invoked
> in POSIX mode, something which I couldn't find documented in the
> model (and I wouldn't know where to find this information in POSIX).
Yes, Posix requires it. It's described in the info manual:
31. Assignment statements preceding shell function calls persist in the
shell environment after the function returns, as if a POSIX
special builtin command had been executed.
An extract from the info manual describing Posix mode (the same as the
POSIX file in the bash distribution) is available at
http://tiswww.case.edu/~chet/bash/POSIX
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU [email protected] http://cnswww.cns.cwru.edu/~chet/
