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Gnus Manual

8.15 Emacs Enhancements

Starting with version 21, Emacs is able to display pictures and stuff, so Gnus has taken advantage of that.

Gnus-specific tool bars will be used if Tool Bar mode is on. Currently the group, summary and message buffers have tool bars defined.

MIME image types may be displayed internally if Emacs was built with appropriate support (see variable image-types). `X-Face' headers may be rendered as images internally if you have appropriate support programs (see X-Face). You can play sounds internally if Emacs was built with suitable audio support; otherwise Gnus will attempt to play sounds externally.

A simplified version of the XEmacs Smiley support for emoticons (see section 8.16.2 Smileys) is available on graphical displays under the control of gnus-treat-display-smileys. Text `smiley' faces---`:-)', `:-/', `:-(' and the like--are mapped to pictures which are displayed instead. The mapping is controlled by a list of regexps smiley-regexp-alist mapping matched text to image file names. It contains matches for `smiley', `wry' and `frowny' by default.

There is currently no Emacs support for `Picons' (see section 8.16.1 Picons), but there is no reason why it couldn't be added.