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From: Kai.Grossjohann@CS.Uni-Dortmund.DE
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Subject: Re: Being forced to deal with message numbers and frustrated
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Tony Lam <Tony.Lam+ding@eng.sun.com> writes:

  >   * Number gap in cached messages can not be removed. When a messages
  >     group (I use nnfolder) has cached articles, I find
  >     respooling/moving/copying messages in the group do not touch
  >     cached articles, also cache groups do not support moving/copy
  >     themselves, thus there is no way to get rid of those huge gaps in
  >     message numbers within Gnus.

That's a valid point.  But why do you cache messages in nnfolder
groups?  All you need to do to keep the messages is not to mark them
as expirable (or as read if you use total-expire).

Do you really want these messages on your disk twice?

See the variable gnus-uncacheable-groups to prevent caching for mail
groups. 

kai
-- 
Life is hard and then you die.