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3.16.5.1 Rule Variables

Gnus uses rule variables to decide how to view a file. All these variables are of the form

      (list '(regexp1 command2)
            '(regexp2 command2)
            ...)
gnus-uu-user-view-rules
This variable is consulted first when viewing files. If you wish to use, for instance, sox to convert an `.au' sound file, you could say something like:
(setq gnus-uu-user-view-rules
      (list '("\\\\.au$" "sox %s -t .aiff > /dev/audio")))
gnus-uu-user-view-rules-end
This variable is consulted if Gnus couldn't make any matches from the user and default view rules.
gnus-uu-user-archive-rules
This variable can be used to say what commands should be used to unpack archives.


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