Does consult-line-multi use orderless completion-style?

[Tokubara]

This is my completion-style setting:

(setq completion-styles '(orderless baisc))

It works well with consult-line. But when I try to use ! (negation) in consult-line-multi, it doesn't work. ! is not interpreted as negation:

How can I make negation and other meta-chars work in consult-line-multi?

[minad]

No, consult-line-multi doesn't use the completion style. It uses its own regexp compiler, which you could in principle replace with Orderless as described in the wiki. Note that even then negation will not work, since Orderless compiles negation to a predicate function by default (see orderless-not). But you can configure Orderless to use the less efficient orderless-without-literal instead for negation. All of this is a bit of a rabbit hole, I must admit.