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Subject: Re: Render a buffer or string to a simpler string?
Date: Sun, 26 May 2013 10:08:43 -0700 (PDT)
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A couple of notes:

It shouldn't be very hard to create such a function in elisp - the subset of display properties you need is probably not very large.

Also, how hard it would be to put a single transparent image on top of a frame? This would allow more robust pop-ups, as well as other UI elements by using SVG.

Evgeni