Re: [exim-dev] [Bug 1147] New: builtin list counting feature

On Tue, Sep 6, 2011 at 1:26 PM, Steven Reisman <sar@???> wrote:
>> and I've tried to make a condition like "if count(addresses($h_from)) > 1"
>> exim-users people came up with this ugly (but working) hack:
>>   # DEBUG #
>>   warn    set acl_m_sender_count = ${reduce \
>>                            {>, ${addresses:$h_from:} } \
>>                            { 0 } \
>>                            {${eval:$value+1}} \
>>                           }
>>             logwrite       = Found $acl_m_sender_count senders in From header
>> This feature request is about adding some smart "count" expansion that would
>> allow to count members in lists.
> How about:
>   ${eval:${strlen:${sg{item1, item2 ,item3, item4}{[^,]*}{}}}+1}

As long as ${addresses:$h_from:} is used, which strips all
descriptions from the email addresses, leaving just the email address
itself, that should work just as well. I came up with the above with
a quick google that found it on a debian admin site. The only thing I
did was break it from one long line into digestible chunks. :-)

I too think that a ${count: ... } function could prove to be extremely
useful. The code already exists which performs a $senders_count. It
just needs to be isolated and made into a simple to access function.
Having said that, I looked at it and was going to try to do it myself,
but the complexity was a bit more than I bargained for, so it proved
to be beyond my skillset.

...Todd
--
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