No need to escape characters in this context

Escaping was just adding \ to the list multiple times

completion/available/aliases.completion.bash

@@ -50,7 +50,7 @@ function _bash-it-component-completion-callback-on-init-aliases() {
 		fi
 
 		# skip aliases to pipes, boolean control structures and other command lists
-		chars=$'\|\&\;\)\(\n\<\>'
+		chars=$'|&;)(n<>'
 		if [[ "${alias_defn}" =~ [$chars] ]]; then
 			continue
 		fi