There appears to be three options - "name:n", "name:+n", or "name:-n",
yet they refer to the 'first or last `n' messages', respectively, i.e.
there are two respective explanations for three options
It's `name:n' where n is a non-zero integer. If positive then it's the
first n messages, if negative then it's the last n.
In having a quick look at the code, I spotted `name=n', again with n
being non-zero. This actually does what I've wanted in the past. (Did
I complain and someone add it when I was stuck using an old version?
:-) If n is positive then it's the nth message of the sequence, if
negative then the nth from the end of the sequence in the other
direction, e.g. foo=-2 is the penultimate.
There is another difference between `:' and `='. Given a ten long
sequence foo, I can foo:42 and foo:-42 and the 42 is clamped to ten.
But trying to pick the 42nd of ten is naturally an error, though not a
very clear one.
P.S. The Mail-Followup-To header is set; that might help your replies
to hit the list. :-)
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