Electricity (was: bug#5586: 23.1.92.1; Electric indentation and hungry backspace deletion in JavaScript mode (js-mode))

[Stefan Monnier]

> I am still not happy about the way it's implemented in either mode---I
> think Emacs needs some kind of centralized mechanism for this---but that
> is a longer-term project.

Agreed.  If someone could try to survey the different kinds of
"electricity" we have in Emacs packages, and the different ways they can
be configured, it would be a good first step.

Obvious one kind of electricity is when some keys (like ; } and such)
cause reindentation of the current line additionally to self-insert.

Other forms I would consider as potentially connected include:
- SPC in auto-fill-mode
- inserting () when you press just (
- do abbrev expansion when you hit SPC
- newline-and-indent as an electric form of newline
- insert `` or " or '' when you press " in LaTeX


        Stefan