Re: Default lexical-binding to t

[Stefan Kangas]

Christopher Howard <christopher@librehacker.com> writes:

> Hi, I just wanted to mention one little thing (feature request?): I
> noticed that, if I include this
>
> ``` ;;; ...  -*- lexical-binding: nil -*- ```
>
> in order to purposefully set the lexical-binding to dynamic — I'm a
> rebel, I guess — then the mode-line still gives the "/d" a warning
> face. In my theme, that shows up as bright red. But if I set it to "t"
> instead, then I get a "/l" without a warning color. I don't see why,
> if I purposely chose dynamic binding, that Emacs should treat it as a
> bad thing which I need to be warned about.

Yes, that is on purpose.  See (info "(elisp) Coding Conventions"):

   • We recommend enabling ‘lexical-binding’ in new code, and converting
     existing Emacs Lisp code to enable ‘lexical-binding’ if it doesn't
     already.  *Note Selecting Lisp Dialect::.