Re: new Mail-Followup-To patch...please take a look...

[Per Abrahamsen <abraham@dina.kvl.dk>]

prj@po.cwru.edu (Paul Jarc) writes:

> Per Abrahamsen <abraham@dina.kvl.dk> wrote:
>> prj@po.cwru.edu (Paul Jarc) writes:
>>>> +(defvar message-subscribed-address-functions '(ignore)
>> 
>> Why put "ignore" in the list?
> 
> So Gnus can differentiate between the default value and the user's
> explicit nil setting.  Gnus automatically adds its function only if
> the user hasn't provided a setting.

Ah, I missed that.  That makes sense.

> I think it's defvar because someone thought defcustom couldn't handle
> a list of functions, or the '(ignore) default.  I have next to no
> knowledge of customize, so I don't know if this is true.

defcustom can handle anything, you don't even need supply a ":type"
argument (it defaults to "sexp").  Og a :group argument, but not doing
that is kind of rude.

It does require a value and a doc string, but if these are provided
defcustom can always where defvar can be used.

>> Why would we ever want MFT in the messsage buffer?  To test it?
>>
>> I thought it was supposed to be inserted automatically when the user
>> send the message.
> 
> It's inserted automatically only if the user didn't supply one
> manually.  It can be used manually just like Followup-To, to direct
> the thread toward a subset of the lists, etc.

That makes sense too.