When messages have no References or In-Reply-To fields, MHonArc is
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<Possible follow-up(s)>. I experienced lately that this feature didn't
work reliably, and I found out that it was because I use the
SUBJECTSTRIPCODE resource to stip a prefix.
This is the Perl expression i used:
The simple solution was adding a whitespace character to the expression,
Earl, maybe this observation should be covered at