emacs 21 add-on packages

[Jude DaShiell]

The packages like gnus and calc in emacs 21 once emacs 22 is installed are 
superfluous packages because both calc and gnus are included as commands 
that can be run inside emacs 22.  There may be other emacs add-ons in this 
class, I don't know for sure.  It's possible timidity-el and edb may be in 
this class as well.  What happens when someone tries installing a 
superfluous package in aptitude or apt-get is a can't get file lock error. 
Wouldn't it make more sense to inform the user in these and similar 
situations that they're attempting to install superfluous packages and 
that if they continue in this case emacs 22 will have to be removed and 
replaced by emacs 21 a downgrade and then the requested packages will then 
be installed?


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