Proposal: frm to display multiple fields

Currently the command `frm' may display for example 2 fields with
Message-ID and -l switch to show recipient:

$ frm -f Message-ID -l

It would be useful to create list of e-mails to be processed in ther
programs by using the switches like:

$ from --field-list Message-ID,From,Subject

It would be OK to have not more than 5 such fields.

In particular I need Message-ID to reference to message quickly and
this alone is not useful without the subject which is supposed to be
descriptive.

Then I can build lists, like links, so that mail client can quicly
locate that message.

--
Jean

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