The wp-cli command configuration has some mismatches with Windows Powershell.

e.g. the ALIAS_REGEX constant used to configure remote instances because it uses the @ symbol as a prefix.
@ is used (like the $ character as a variable prefix) to expand the variable (converts a string variable in an array).

Would that be possible to allow overriding the constant with some filter?

Alternative question, why are we using @prod structure to define the aliases in the wp-cli.yml instead of an array of values like disabled_commands or require?