On 4/5/13 4:50 PM, Chet Ramey wrote:
> On 3/25/13 9:37 PM, Dan Douglas wrote:
>> Hello,
>>
>> $ function f { typeset +x x; typeset x=123; echo "$x"; sh -c 'echo
>> "$x"'; }; x=abc f
>> 123
>> abc
>> $ echo "$BASH_VERSION"
>> 4.2.45(1)-release
>>
>> This is inconsistent with a variable defined and exported any other way.
>> (ksh93/mksh/zsh don't have this issue. Dash doesn't actually export the
>> variable to the environment in this case, but just "localizes" it, and
>> requires a separate export.)
>
> The question is whether or not variables in the temporary environment
> passed to a shell function and that function's local variables exist in
> the same namespace. Bash makes a distinction, to a certain extent,
> between the two, but it's inconsistent, as you say. I'll take a look at
> this, and maybe it will be in bash-4.3.
I figured out how to make this work in a consistent way. It turned out not
to be as bad as I had thought it might.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU c...@case.edu http://cnswww.cns.cwru.edu/~chet/
