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

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http://bugs.exim.org/show_bug.cgi?id=1147
           Summary: builtin list counting feature
           Product: Exim
           Version: 4.76
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: wishlist
          Priority: medium
         Component: Unfiled
        AssignedTo: nigel@???
        ReportedBy: arekm@???
                CC: exim-dev@???

I'm looking for a expansion feature that would allow to count elements in
lists.

For example I had recently tons of spam with:
From: aaa@???, bbb@???, c@???, ...
(multiple addresses in From)

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.


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