Filipp Gunbin <fgunbin@fastmail.fm> writes:

> As gnus-summary-save-parts (X m) is invoked on the article, it could
> offer completion based on what mime parts are present in the article.

I've attached a "dumb" version of what that could look like.

Two notes:

1. This would obsolete `gnus-summary-save-parts-default-mime'.
   Personally I think that's totally fine: between completion and
   a history variable, I don't see any use for a default
   value.
2. If we go this route, it would be nice to extend it so that, for
   instance, if _any_ image/ media types are present, we also manually
   add a "image/*" entry to the completion collection. Or for maximum
   OCD, only add that "image/*" entry if there are more than one image/
   type handles present. Matches are not required, so you could always
   just type in your own regexp, anyway.

Let's see if anyone has any comments.