bug#20545: New minor mode Electric Punct

[Paul Eggert]

Attached are two proposed patches.  The first creates a new minor mode Electric 
Punct that does a variant of "smart quoting" designed for the Emacs tradition of 
using ` and ' as aliases for left and right single quotation marks.  This new 
minor mode is inactive by default, but the user can enable it in certain 
contexts.  The second patch modifies .dir-locals.el to enable the minor mode in 
contexts where it should be useful when editing Emacs itself.

These patches are related to Bug#20385 in that they make it much easier to edit 
doc strings formatted ‘like this’, which is the point of Bug#20385.  (All that 
one needs to do is to type the string "`like this'".)  However, the main idea of 
this patch is independent of the Emacs doc string issue, as Emacs should make it 
easy to quote ‘like this’ when the user prefers this form.

I named this mode "Electric Punct" because I anticipate that there may be a 
similar need to enter em and en dashes, and a few other non-ASCII punctuation 
marks commonly used in text.  Quotes are a good place to start, so that's where 
I started.

0001-New-minor-mode-Electric-Punct.patch
Description: Text Data

0002-Use-Electric-Punct-when-editing-Emacs-source.patch
Description: Text Data