bug#27857: add gnus-mail-avoid-redundancy

[Robert Pluim]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> 積丹尼 Dan Jacobson <jidanni@jidanni.org> writes:
>
>> User receives a mail containing
>>
>>    Cc: "tagging@openstreetmap.org" <tagging@openstreetmap.org>
>>
>> User types
>>  S W runs the command gnus-article-wide-reply-with-original
>>  S W runs the command gnus-summary-wide-reply-with-original
>>
>> which puts the same silly line into the proposed response.
>>
>> Wouldn't it look better just   Cc: tagging@openstreetmap.org ?
>
> Hm...  it would.  Does anybody object to me adding this (and defaulting
> the feature to "on")?

No objection from me, thereʼs zero information loss. Vigorous
applause, more like.

> The proposal is to remove the "name" part of an address in To/Cc etc
> headers if and only if it is identical to the "address" part of an
> address.

Yes. From memory, various versions of outlook were pretty good (bad?)
at generating this kind of header, sometimes with a liberal sprinkling
of ' and/or "

Robert