zlacker

The why: because Lua, Python, JavaScript, Janet, etc lack many or all these features. And each of these features is known to make life easier for a human programmer.

>>nine_k+(OP)
Looking through that list of features, Ruby (the dynamic language I know best) has all but 1 built-in (and the other can be added with Gems). I'm guessing Python probably has them all too (but I don't know Python that well). They're pretty common. So the why still isn't clear.

>>dismal+17
Is Ruby easy to embed in a C program?

>>nine_k+ya
Yes -> https://mruby.org

It's also incredibly easy to extend the main Ruby implementation with C, C++, Odin, Zig, Rust, Fortran, etc... Literally a few lines.

>>nine_k+ya
That was originally the point of Ruby