The ~/.mailcap file is parsed by most MIME-aware message handlers and describes how elements are supposed to be displayed. Here’s an example file:
image/*; gimp -8 %s audio/wav; wavplayer %s application/msword; catdoc %s ; copiousoutput ; nametemplate=%s.doc
This says that all image files should be displayed with
that WAVE audio files should be played by
wavplayer, and that
MS-WORD files should be inlined by
mailcap library parses this file, and provides functions for
This variable is an alist of alists containing backup viewing rules.
A customizable list of viewers that take preference over
Prompt for a file name, and start a viewer applicable for the file type in question.
Parse the ~/.mailcap file.
Takes a MIME type as its argument and returns the matching viewer.
mailcap-prefer-mailcap-viewers variable controls which
viewer is chosen. The default non-
nil value means that
settings from ~/.mailcap is preferred over system-wide or
Emacs-provided viewer settings.
nil, Emacs-provided viewer settings have precedence. Next,
the most specific viewer has precedence over less specific settings,
no matter if they’re system-provided or private, so ‘image/gif’
in /etc/mailcap will “win” over an ‘image/*’ setting in