bug#50460: 27.1; defcustom for mail-user-agent is too strict?

[Gregor Zattler]

Hi David, Lars,
* Lars Ingebrigtsen <larsi@gnus.org> [2021-09-08; 08:56]:
> David Bremner <david@tethera.net> writes:
>
>> The defcustom for mail-user-agent looks like
>>
>> :type '(radio (function-item :tag "Message package"
>>                             :format "%t\n"
>>                             message-user-agent)
>> ;; [...] snip
>>              (function-item :tag "Message with full Gnus features"
>>                             :format "%t\n"
>>                             gnus-user-agent)
>>              (function :tag "Other"))
>>
>> This means that a symbol without a function definition cannot be set
>> (using customize) as mail-user-agent. This seem inconsistent with the
>> docstring of define-mail-user-agent,
>
> Yup.  Now fixed in Emacs 28.

thanks for the fast bug report and fixing.  I confirm it is
now possible to customize `mail-user-agent' to
`notmuch-user-agent' via `customize-variable'.


Ciao; Gregor
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