mm-image-type-regexps

mm-image-type-regexps is a variable defined in `mm-decode.el'.
Its value is shown below.

• This variable may be risky if used as a file-local variable.

Documentation:
Alist of (REGEXP . IMAGE-TYPE) pairs used to auto-detect image types.
When the first bytes of an image file match REGEXP, it is assumed to
be of image type IMAGE-TYPE.

Value:

(("/\\*.*XPM.\\*/" . xpm)
 ("P[1-6]" . pbm)
 ("GIF8" . gif)
 ("\377\330" . jpeg)
 ("\211PNG
\n" . png)
 ("#define" . xbm)
 ("\\(MM\\*\\)\\|\\(II\\*\\)" . tiff)
 ("%!PS" . postscript))