Re: Function-scoped parameters?

["Benjamin R. Haskell" <zsh@xxxxxxxxxx>]

On Wed, 23 Feb 2011, Sebastian Stark wrote:

> Am 23.02.2011 um 19:03 schrieb Benjamin R. Haskell:
>
> > This doesn't work, probably unsurprisingly.  But is there a way to 
> > accomplish it?
> >
> > function () {
> >    emulate -L zsh
> >    local x=asdf
> >    trap 'echo x is ${x:-unset}' EXIT
> > }
> >
> > The use case is that I want to assign a local parameter 'temp' to be 
> > set to the name of a temporary file.  If anything goes wrong in the 
> > function, I'd like that temporary file to be removed, but I don't 
> > want 'temp' to leak out of the function scope.
> >
> > e.g.:
> > dosomething () {
> >    emulate -L zsh
> >    local temp=$(mktemp)
> >    setopt err_return
> >    trap '(( $+temp )) && rm $temp' EXIT
> >    # ...
> > }
>
> Would "setopt localtraps" be of any help?

From the documentation for 'emulate':

[...] If the -L option is given, the options LOCAL_OPTIONS and 
LOCAL_TRAPS will be set as well[...]

So, it's already set by `emulate -L zsh`.

--
Best,
Ben