On 9/3/14, 1:14 PM, lolilolicon wrote:
> Yes, they're convenient, and make the code look somewhat more
> readable, compared to equivalent `eval` or `printf -v` statements.
> Functionally, they're all the same.
> And they all suffer from the same issue. No matter which of those
> three is used, one has to be very careful not to create name
> collisions which can result in non-obvious bugs, sometimes deep in the
> function call stack. One will have to invent his own variable naming
> conventions to avoid such bugs; for instance, I have written a
> reminder for my own script,
> https://github.com/lolilolicon/FFcast/blob/master/HACKING.markdown
I think that is a consequence of mixing bash's dynamic scoping with the
ksh93-derived nameref feature. It's simpler in ksh93, which uses static
scoping.
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/
