Version 0.6.1 of package Llama has just been released in NonGNU ELPA. You can now find it in M-x list-packages RET.
Llama describes itself as: =============================== Compact syntax for short lambda =============================== More at https://elpa.nongnu.org/nongnu/llama.html ## Summary: 1 Llama — Compact syntax for short lambda ═════════════════════════════════════════ This package implements a macro named `##', which provides a compact way to write short `lambda' expressions. The signature of the macro is `(## FN &rest BODY)' and it expands to a `lambda' expression, which calls the function `FN' with the arguments `BODY' and returns the value of that. The arguments of the `lambda' expression are derived from symbols found in `BODY'. Each symbol from `%1' through `%9', which appears in an unquoted part of `BODY', specifies a mandatory argument. Each symbol from `&1' through `&9', which appears in an unquoted part of `BODY', specifies an optional argument. The symbol `&*' specifies extra (`&rest') arguments. ## Recent NEWS: [Not provided 🙁]