Homepage: https://emacswiki.org/emacs/download/extview.el
Updated:
Open files with external viewer
Load the library and try opening a file which has an associated application in `extview-application-associations' or in mailcap. `extview-application-associations' can be used to override mailcap handlers: (require 'extview) (push '("\\.pdf$" . "acroread %s") extview-application-associations) (push '("\\.py$" . nil) extview-application-associations) (push '("\\.html$" . ask) extview-application-associations)