Re: Function-scoped parameters?

["Benjamin R. Haskell" <zsh@benizi.com>]

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