In pine, when I get an HTML eMail, I press cursor-right to get to this view:

   1     4 lines   Text/PLAIN
   2    14 lines   Text/HTML

Then I go to the second line and press cursor-right again, and it renders
the HTML internally, with actionable links even.

In alpine, however, it asks this instead:

View selected Attachment?
Y [Yes]
N No

However, when I press Y/Enter, when started from X11, it runs Opera on
the file (which is almost never the thing I want), and when started from
a terminal (e.g. via ssh), it just does *nothing* so I consider it a bug,
with the preferred fix being internal rendering just like pine, and the
alternatively accepted lazy solution being it using lynx to display it.

I also consider this to be a bug. The original Pine handled these HTML
attachments (which are a nuisance, I think we can all agree) significantly
better and allowed viewing them from within the program itself, not requiring
x11 forwarding.

Many senders nowadays only include the relevant part of the email as HTML (with
the "ASCII" part only containing a few lines of useless text), and the option to
have it rendered internally by alpine (or even call lynx/elinks2 as a quick
text-render workaround) would be *highly* appreciated.