bug#63861: [PATCH] pp.el: New "pretty printing" code

[Ihor Radchenko]

Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of
text editors" <bug-gnu-emacs@gnu.org> writes:

> I haven't seen "really bizarre results" with `pp-region` yet, but
> I wouldn't be surprised if that can happen: I've been playing with
> various pretty-printing alternatives over the years and they all seem to
> suffer from weird behaviors occasionally, except for those that insert
> too many line breaks.

If algorithms that insert "too many" line breaks can be reasonably fast,
can they be executed first followed by merging the excessive lines back?

-- 
Ihor Radchenko // yantar92,
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