On 2023-05-16 20:05, Slavko via Exim-users wrote:
Dňa 16. mája 2023 19:36:00 UTC používateľ MRob via Exim-users
<exim-users@lists.exim.org> napísal:
Hi, I want to capture part of a regex match (capture group) to put in
logs. This example using subject header works but is there a better
way?
warn set acl_c_temp = ${if match{$h_Subject:}{<regex with capture
group>}{$1}{none}}
!condition = ${if eq{$acl_c_temp}{none}}
logwrite = Notice: subject match is: $acl_c_temp
Empty variable is the same as undefined:
set acl_m_temp = ${if match{$h_Subject:}{<regex>}{$1}}
condition = ${if def:acl_m_temp}
...
Thanks Slavko!
Note, use acl_m_... for that, one connection can transfer
multiple unrelated messages, once acl_c_... will be set,
it can remain in that state for other messages in the
same connection (while not in this case, but anyway).
The acl_m_... will be cleared for every message for you
by exim itself.
I wasnt sure which is best. In this situation temp variable getting set
every time *even if set to undefined* correct? So I understand it should
not matter what variable to use, right?
If you do a few in a row it's not a problem right?
warn set acl_m_temp = ${if match{$h_Subject:}{<regex 1>}{$1}}
condition = ${if def:acl_m_temp}
...
warn set acl_m_temp = ${if match{$h_Subject:}{<regex 2>}{$1}}
condition = ${if def:acl_m_temp}
...
warn set acl_m_temp = ${if match{$h_Subject:}{<regex 3>}{$1}}
condition = ${if def:acl_m_temp}
...
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