gnus-mime-display-multipart-alternative-as-mixed

gnus-mime-display-multipart-alternative-as-mixed is a variable defined in `gnus-art.el'.
Its value is

nil

Documentation:
Display "multipart/alternative" parts as "multipart/mixed".

You can customize this variable.

This variable was introduced, or its default value was changed, in version 22.1 of Emacs.