Lars Ingebrigtsen <larsi@gnus.org> writes:

> So I put the affixion thing into read-file-name and made hi-lock call
> read-file-name instead of doing the completion itself.

Great!  A couple of nits:

1. Is there a reason why you went with (list "SAMPLE\t" "" face) instead
   of (list face "" \tSAMPLE)?  "(elisp) Completion Variables" says that
   the completion goes first, then the prefix, then the suffix; I don't
   know how hard a rule that is, however I do think the latter option
   fares better when faced with variable heights.

   Cf. patch and screenshots: I like the second option better because
   IIUC the face names (which is what I'll be focusing my eyes on in
   order to know what to type; the face decoration I can see well enough
   in my peripheral vision) stand a better chance of being aligned.

   (Although I don't know if it's the hour getting late or something,
   but now that I actually try out C-u M-s h r I just… can't get any
   highlighting, with or without my patch on top.  The completion works
   fine, but when I exit the minibuffer… nothing gets highlighted.

   Ugh.  Will sleep on it)

2. As you can see on the screenshots, the prompt shows the default face
   twice.  I think fixing this is as simple as removing format-prompt
   (patch also attached), but then again, I'm not thinking straight this
   evening it seems.

Thanks for your time.