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<greghendershott>
Emacs Lisp is shifting toward lexical binding, at least among popular/maintained packages.
<greghendershott>
Among other reasons, it tends to be faster.
<greghendershott>
Emacs Lisp doesn't have a big string API, because that's really a subset of the buffer API.
<greghendershott>
That is, in many langs where you'd use string ops, in ELisp you'd use buffer ops.
<greghendershott>
Recreating that buffer model/API is a big chunk of the work bremner mentioned, I think.
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<greghendershott>
The Racket "framework" seems somewhat inspired by Emacs in this regard? But not exactly. So.
<greghendershott>
But IDK maybe someone could implement enough of the Emacs primitives, to use the .el files "as is". Seems very unlikely it would be that simple/easy, but idk.
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<bremner>
who was working on a racket re-implementation of (some subset of) emacs? thanks to racket-mode, very hard to search for it :P
<greghendershott>
I think that was tonyg
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<bremner>
ah, rmacs
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<aeth>
Lexical scope is usually better, but you have to be compatible with elisp packages that exist, even if they don't follow best practices.
<aeth>
(And they usually don't... So much elisp to me looks like they're written by people who haven't used another Lisp. There's lots of stuff like ")"s on their own line.)
<bremner>
so many setq's ;)
<bremner>
maybe that's normal in common lisp, dunno
<aeth>
Afaik, it's an archaic style in CL, but not incorrect. SETF has slowly been taking over because it's general, but some people still use SETQ.
<aeth>
But, disregarding [] which only some Schemes use, CL/Racket/Scheme files tend to have a uniform style. That and elisp packages written by Schemers and Common Lispers. The main disagreement in style I tend to find is how many ;s to use.
<aeth>
CL is very consistent with ; as an end of line comment, ;; as an internal-to-a-form line comment, and ;;; as a top-level line comment (i.e. if there's no indentation in front at all, it's ;;; not ;;), perhaps using ;;;; for file header comments. Most Schemers just use ; and ;;.
<bremner>
I guess I was snarking about the amount of mutation in elisp, not so much the choice of setq or setf
<aeth>
But, yes, I guess you could describe elisp as "archaic CL". Not just the SETQ but a lot of other idioms are things you might see in 1980s .lisp files, but not modern ones.
<aeth>
And, yeah, way more mutation than even CL (at least if you disregard the internal mutation of LOOP that you can mostly ignore unless you want to take closures of the LOOP's iteration variables)
<aeth>
Ironically, one of the reasons you don't have )s on their own line is because of tools like Emacs balancing them for the programmer, even though a lot of elisp uses that archaic style.
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