Re: image descriptors and defimage with :data

[Richard Stallman]

    Emacs 21 manual says that defimage must have at least the following
    properties in the props list:

Where does it say that?  Here is the text I see:

    Each argument in @var{specs} has the form of a property list, and each
    one should specify at least the @code{:type} property and either the
    @code{:file} or the @code{:data} property.  The value of @code{:type}
    should be a symbol specifying the image type, the value of
    @code{:file} is the file to load the image from, and the value of
    @code{:data} is a string containing the actual image data.  Here is an
    example:

However, judging from the previous node in the manual, I think that
:data is not supported yet for image type JPEG.  If so, we would like
to support it; would you like to try to implement it?