[throwaway20371]

> if { = 0 == 1 } then {

What in the heck is that first '=' for?

[bccdee]

I assume `=` is the equivalent of `test` — it's a function invocation, and `[0, ==, 1]` are its arguments.

[hnlmorg]

Everything is a function. So = is a function name for logical and mathematical operations.

https://murex.rocks/docs/commands/equ.html

[tzot]

A renamed `expr` of the shell.