Okay so this is clever – it's a polyglot, both a valid bash script and a DSL which is interpreted by some binary written in Rust and called at the final "eval $

Okay so this is clever – it's a polyglot, both a valid bash script and a DSL which is interpreted by some binary written in Rust and called at the final "eval $(argc...)" line, where "argc" is the name of the rust binary. Thinking loudly: I was just wondering about debugging (kind of "does this lack source maps?"), but shell never prints out lines at syntax errors, so it does not really matter. One can write "set -e" anyway at the start of the functions in order to catch errors early.