Add key to unfill paragraph
Add key to unfill paragraph

In standard Emacs, M-q invokes fill-paragraph which reformats the
current paragraph to not exceed the fill-column (typically 80
characters). This works in various modes including programming comments.

This commit adds the opposite: M-Q (just add Shift) invokes
unfill-paragraph which joins all the lines together.

Credit goes to Stefan Monnier who was the head Emacs maintainer until
2015. One can wonder why he didn't add this function into Emacs itself.

philippe-grenet/exordium,pkryger/exordium,psipika/exordium,fcassirer/dot.emacs,jbibollet/exordium,steve-downey/dot.emacs