> On Mar 6, 2020, at 11:23 PM, Richard Stallman <rms@gnu.org> wrote:
> 
> [[[ To any NSA and FBI agents reading my email: please consider    ]]]
> [[[ whether defending the US Constitution against all enemies,     ]]]
> [[[ foreign or domestic, requires you to follow Snowden's example. ]]]
> 
> Would someone please make fill.el work for variable pitch fonts
> and other things that vary from fixed columns?  It is not a small job
> but it is vital for Emacs to advance in the area of formatting.

I’ve got something mostly working, it provides on-the-fly word wrapping that supports variable pitch fonts and CJK characters. With minor changes it can be also used for filling but I don’t see the point for hard filling variable-pitch font text: they display differently in different fonts.

Here is a demo comparing the new wrapper (left) with word-wrap and fill-paragraph (right):