bug#18730: [PATCH] tildify.el: Add `auto-tildify' and `auto-tildify-mode'.

[Stefan Monnier]

> Of course, we can change `tildify-pattern-alist''s default value and
> require that it does not look past the white-space that is being
> replaced, in which case auto-tildify will be able to use it.  I would be
> fine with that myself, but I don't know how strict should we be about
> backward compatibility.

OK, that sounds fine:

Introduce a new variable that can be used by tildify-mode.  It would
probably work similarly to your auto-tildify-pattern-alist *except* that
it won't be an alist indexed by the major-mode.
Instead, the major-modes should set this var buffer-locally if they want
it to be different.

Please try to make it so that this new var can also be used for
tildify-region, move the current default entry in tildify-pattern-alist
to it (so that tildify-pattern-alist defaults to nil), and mark
tildify-pattern-alist as obsolete.

tildify-string-alist should also be made obsolete and replaced by
a variable which is set buffer-locally by the major-modes.

Could that work?


        Stefan