Re: another minor lexbind patch

[Davis Herring]

> Here's a trivial patch to the lexbind branch to make lexical-binding a
> safe local variable.

If `lexical-binding' is taken into account other than at read or
compilation time, it might not be wise to make it safe: someone could find
(old, well-established, well-distributed, commonly-used) code that behaves
in some undesirable way if it's non-nil.

If it does only affect loading/compiling code in the file where it's set,
that's fine, of course: you're already trusting that file if you eval
things in it, although I suppose someone could try to write a file that
did something evil that wasn't obvious if you read it assuming dynamic
binding.

Davis

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