defmacro | Load Time R Package Macros | Reflection library

First of all, let's recall if necessary that the apostrophe ' character is a reader macro that reads the next form F and produces a regular Lisp form (quote F). That's why there is a quote symbol below.

So, in the following form:

There's no built-in way to give a global variable a dynamically scoped temporary value in Python (and Hy doesn't add a macro for it or anything), so you have to do it yourself:

Every CL implementation has an init file it calls on start. For SBCL that is ~/.sbclrc. Usually also quicklisp has some setup code in there if you installed quicklisp.

So you could add a line:

parenscript:ps is a macro, not a function: its body is literal parenscript and is not evaluated but compiled, from Parenscript to JavaSctipt. This is easy to check:

that is happening, because the 'b that you introduce in macro is namespaced:

example:

I think your macro implementation is great, but implementing it as a function has the advantage of increased composability. For instance, you can pass your variadic-for to a function. Here is an implementation of variadic-for as a function:

You should not be using a macro for this.

A macro is best viewed as a compiler extension that is embedded in the source code.

All you need is a regular function, like:

You need to change the other one as well:

In your code there are multiple places where the macro generates bindings in a way that is subject to variable capture (pdf).