# vim:ft=m4 # A → β # β define([ERROR], [ divert(0)dnl [
  • $0: $1
    • ] divert(1)dnl

    $2

    divert(-1) ]) # A → β define([QUERY], defn([ERROR])) define([WARNING], defn([ERROR])) divert(0)dnl __file__

    The power of M4

    divert(2)dnl divert(-1)