[Fetchmail-users] Procmail filtering question

[Richard K. <ric...@bt...>]

I'm running fetchmail -> procmail -> local directories read by Claws on
Ubuntu 20.04

I'm having some problems filtering email messages by Subject using
procmail

"Normal" text Subjects of the form:
Subject: News on Coronavirus
are no problem. But there are a lot of messages nowadays that are
displayed in Claws as:

Subject: Update from GOV.UK – Coronavirus Statutory Sick Pay ... etc

but where the subject in the message itself is actually in the form:

Subject:
=?UTF-8?Q?Update_from_GOV.UK_=E2=80=93_Coronavirus_Statutory_Sick_P?=
=?UTF-8?Q?ay_Rebate_Scheme:_service_availability_and_issues?= 
(the above is all one line)

Does anyone know if there is some generic way of ensuring that messages
are passed to procmail in the "normal" format so that I may reliably and
straightforwardly construct procmail matching rules (i.e. without
having to inspect the message source each time)?

- Richard.
-- 
Richard Kimber