Not sure whether providing a download link for attached images is the
right thing to do - we should probably just display them like inline
images. But we can always change that by a simple change of the
template.
Inline images are very similar to attachments: We just want to store
them somewhere and refer to them. But we want to use a different element
(<img> instead of <a>) or more generally, a different template. So we
pass the disposition as an additional argument to save_part and use it
to construct the template name - which gives as a flurry of new
templates.
Strange combination, but the first message with multipart/alternative
also contained a .scp file and not as an attachment.
The template for multipart/alternative allows switching between the
alternatives.
Peter J. Holzer