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From: Simon Josefsson <jas@extundo.com>
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Subject: Re: message-remove-duplicates and gnus-remove-duplicates
Date: Thu, 29 Sep 2005 15:39:36 +0200
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Reiner Steib <reinersteib+gmane@imap.cc> writes:

> On Tue, Sep 27 2005, Simon Josefsson committed:
>
>> 2005-09-27  Arne J=F8rgensen  <arne@arnested.dk>
>>
>> 	* message.el (message-remove-duplicates): New function.
>> 	Implementation borrowed from `gnus-remove-duplicates'.
> [...]
>> +(defun message-remove-duplicates (list)
>> +  (let (new)
>> +    (while list
>> +      (or (member (car list) new)
>> +	  (setq new (cons (car list) new)))
>> +      (setq list (cdr list)))
>> +    (nreverse new)))
>
> Shouldn't we drop (or defalias) `gnus-remove-duplicates' in favor of
> `message-remove-duplicates'?  (We can safely require `message.el' in
> Gnus code but not the other way round.)

Sounds good.  Let's defalias it, in case external packages use g-r-d.

There is also mm-delete-duplicates, I'm not sure how it relates.