spacehammer VS LuaJIT

For certain concepts that I don't understand fully, I'm using chatgpt-shell. It is beyond fantastic and almost impossible to describe in a single post. This is, for example, just one of my use cases: When I'm writing a comment or a message to my colleague (and of course, yes, I edit just about any text in Emacs), I can select a paragraph and ask chatgpt-shell to improve it. It does, but it also shows me the diff of the changes, that is how I set it up.

I’ve been using hammerspoon for several years and it has really become integral to my workflow.

You may want to check out the extension package spacehammer[0]. It includes a bunch of workflows and shortcuts that I’ve found extremely useful.

Interestingly (for me at least), it’s authored in Fennel [1], a lisp that compiles to lua. I actually found spacehammer originally when I was working on converting my personal hammerspoon config to Fennel.

[0] https://github.com/agzam/spacehammer

[1] https://fennel-lang.org/

Throw in Spacehammer, and you can add a note from anywhere in the operating system.

I'm a big fan of hammerspoon, but not so much Lua. I also use emacs with Doom, where a lot of bindings are behind a 'leader key'. I found an awesome framework called 'spacehammer'[1] that fits very well into the way I like to work. It similarly hides binding behind a leader, and it's written in Fennel, a lisp that compiles to Lua. I feel like I get to expand the customizability of Emacs out to my whole system and I love it. Hammerspoon is pretty bare on its own so I suggest you check out spacehammer even if it's just a show case of the potential of hammerspoon.

[1] https://github.com/agzam/spacehammer

Unfortunately things aren't so simple, as when doing JIT compilation, LuaJIT _will_ try to shorten the lifetimes of local variables. Using the latest available version of LuaJIT (https://github.com/LuaJIT/LuaJIT/commit/0d313b243194a0b8d239...), the following reliably fails for me:

  local ffi = require"ffi"

I am using https://luajit.org/ in my GCC C++ project.

Can I use this faster Lua JIT in my project as a replacement? And if so, how so?

The existing luajit doesn't do v5.1, so it would be nice to use this newer engine at the newer baseline lua version level.

The commit history looks pretty active...

https://github.com/LuaJIT/LuaJIT/commits/v2.1/

I think https://github.com/LuaJIT/LuaJIT/commit/6a2163a6b45d6d251599... improved things a bit, notably making automatic tarballs work again.

There is nothing on luajit.org, so I assume that 2.0 doesn't have the extensions added (think the site is still on 2.0). However I found some proof in the mirrored git repo, that they do exist and also my luajit interpreter (2.1.0-beta3) shows them as builtins.

If you absolutely want a performant scripting runtime, I'd recommend taking a look at LuaJit, DaScript or AngelScript.

If you don't like that - look towards JIT-compilers. Lua has one