Hey notmuch folks--

When using notmuch-emacs, and looking at a text/html part, i sometimes
want to know where a given link is pointing to without clicking on it --
e.g. to open it in an alternate browser.

it appears that by positioning the point somewhere within the link and
doing "M-x shr-copy-url" i can copy the target of the link to the kill
ring.

This seems useful enough to me (and i'm now receiving enough
text/html-only messages) that i'd like to have some sort of keybinding
to make that easier to operate.

I think it can be added to the mode-map in emacs/notmuch-show.el.  does
anyone have a preference about what keybinding to use for it?  Or is
there some reason to not provide a default keybinding to this
functionality in notmuch-show mode at all?

       --dkg