Default lexical-binding to t

Default lexical-binding to t

[Stefan Monnier]

In bug#74145 I suggest that it is time to change the default of
`lexical-binding` to t.  Clearly this is a breaking change, but only for
those files which:

- Don't have a `lexical-binding` cookie.
- Have code which happens to behave differently under the new dialect
  (such code is not rare, but a lot of code works identically in the
  two dialects).

I believe by the time Emacs-31 will be released, such files will be
uncommon, and it is easy to fix them (either by adjusting he code, or
by slapping a `lexical-binding` cookie).


        Stefan

Re: Default lexical-binding to t

[Gerd Möllmann]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

> In bug#74145 I suggest that it is time to change the default of
> `lexical-binding` to t.  Clearly this is a breaking change, but only for
> those files which:
>
> - Don't have a `lexical-binding` cookie.
> - Have code which happens to behave differently under the new dialect
>   (such code is not rare, but a lot of code works identically in the
>   two dialects).
>
> I believe by the time Emacs-31 will be released, such files will be
> uncommon, and it is easy to fix them (either by adjusting he code, or
> by slapping a `lexical-binding` cookie).

+1