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Re: perldelta [ was: Re: Perl 5.26.0-RC1 is now available!]

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From:
Zefram
Date:
May 25, 2017 00:38
Subject:
Re: perldelta [ was: Re: Perl 5.26.0-RC1 is now available!]
Message ID:
20170525003806.GR6543@fysh.org
Father Chrysostomos wrote:
>> From: jkeenan@pobox.comxsawyerx@gmail.com (James E Keenan Sawyer X)
>
>Strange.

The actual header line as transmitted was:

    From: James E Keenan <jkeenan@pobox.com>Sawyer X <xsawyerx@gmail.com>

which is syntactically invalid.  People's MUAs are interpreting this
in quite a variety of ways.  Mutt (which I use) renders it as the
relatively sober

    From: James E Keenan <jkeenan@pobox.com>, Sawyer X <xsawyerx@gmail.com>

(Multiple authors of one message is a valid usage, though rare.)
mauke on IRC mentioned

    James E KeenanSawyer X <"jkeenan@pobox.comxsawyerx"@gmail.com>

which is at least syntactically valid, unlike the concatenation that
you quoted above.

There's a lesson somewhere in here about the application of the Postel
principle.

-zefram

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