Support Elixir 1.18 · lexical-lsp/lexical@69ca68c

variable "b" is unused (if the variable is not meant to be used, prefix it with an underscore)

variable "a" is unused (if the variable is not meant to be used, prefix it with an underscore)

variable "f" does not exist and is being expanded to "f()", please use parentheses to remove the ambiguity or change the variable name