On Wed, May 8, 2013 at 2:21 PM, Stefan Monnier <monnier@iro.umontreal.ca> wrote:
> When lexical-binding is t, they're very good roomates already.
> Hopefully with time, the "lexical-binding = nil" case can be dropped.

Does this imply that if I want to give for example window.el
lexical-binding (I do have an ulterior motive), no one would mind
having it that way?

> [...]  But converting existing dynamically scoped code to lexical scoping
> is usually pretty easy: set lexical-binding to t at the top of the file,
> then byte-compile it, then fix the warnings, and you should be good to go.
>
> Sometimes there's some extra tricks undetected by the simple checks
> performed by the byte-compiler, so it doesn't always work as smoothly,
> but in most cases it's really a straightforward process.

I have tried to do just that to window.el. It seemed indeed
straightforward to me, but I would greatly appreciate feedback on the
change. I really just added the lexical-binding at the top, and
removed seemingly unused variables. I don't know why these variables
were left (were they really unused?), but byte-compiling gives no
warning, at least.

See attached bundle.