Re: [exim] def:acl var with strict_acl_vars=true

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Auteur: Ted Cooper
Date:  
À: exim-users
Sujet: Re: [exim] def:acl var with strict_acl_vars=true
Brian Blood wrote:
> On Oct 25, 2008, at 8:41 PM, Ted Cooper wrote:
>
>>> Logically speaking should exim have a problem with this:
>>>
>>> ${if def:acl_m_pref_msg_maxsize}
>>>
>>>
>>> when acl_m_pref_msg_maxsize has not been defined and
>>> strict_acl_vars=true???
>>>
>>>
>>> if I'm bothering to check if the variable is defined aren't I working
>>> within the spirit of what strict_acl_vars is trying to enforce and
>>> shouldn't get a error?
>> When you enable strict_acl_vars, everything must be defined before you
>> use it. Using def: is only useful without strict_acl_vars because of
>> how
>> it is used.
>
>
>
> I understand how it works and what the documentation says....
>
> I'm suggesting that use of the def: operation should be exempt from
> errors when strict_acl_vars is on as use of def: operation is merely a
> test of the variable's existence, not use of the variable defined or
> not.


It's not a test of its existence. It replaces def:varname with either
the content of the variable, or an empty string when it's not defined.
It then becomes a true or false as empty string is considered to be false.

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