Version 1.0 of package Orderless has just been released in GNU ELPA. You can now find it in M-x list-packages RET.
Orderless describes itself as: ================================================== Completion style for matching regexps in any order ================================================== More at https://elpa.gnu.org/packages/orderless.html ## Summary: ━━━━━━━━━━━ ORDERLESS ━━━━━━━━━━━ 1 Overview ══════════ This package provides an `orderless' /completion style/ that divides the pattern into space-separated components, and matches candidates that match all of the components in any order. Each component can match in any one of several ways: literally, as a regexp, as an initialism, in the flex style, or as multiple word prefixes. By default, regexp and literal matches are enabled. ## Recent NEWS: [Not available 🙁]