On Sat, May 1, 2010 at 12:26 PM, Dennis Williamson
<dennistwilliam...@gmail.com> wrote:
> As Chet said, use internal variables that are unlikely to conflict.
>
> # Param: $1 variable name to return value to
> blackbox() {
> local __bb_a # internal: __, blackbox: bb, a: _a
> eval $1=bar
> }
>
> f() {
> local a
> blackbox a
> echo $a
> }
> f # no conflict
>
> I prefer to avoid using eval by using declare, but declare inside a
> function makes the variable local. Wouldn't it be nice to have a
> global flag (declare -g) like zsh's typeset -g.
>
> d='ls /;true' # aren't you glad it's not "rm -rf" instead of "ls"
> f "$d" # oops
You can use workarounds like:
printf -v $a "%s" foobar
read $a <<< "%s"
