English

frozen_string_literal: true

Include the English library file in a Ruby script, and you can
reference the global variables such as <tt>$_</tt> using less
cryptic names, listed below.

Without 'English':

    $\ = ' -- '
    "waterbuffalo" =~ /buff/
    print $', $$, "\n"

With English:

    require "English"

    $OUTPUT_FIELD_SEPARATOR = ' -- '
    "waterbuffalo" =~ /buff/
    print $POSTMATCH, $PID, "\n"

Below is a full list of descriptive aliases and their associated global
variable:

$ERROR_INFO::              $!
$ERROR_POSITION::          $@
$FS::                      $;
$FIELD_SEPARATOR::         $;
$OFS::                     $,
$OUTPUT_FIELD_SEPARATOR::  $,
$RS::                      $/
$INPUT_RECORD_SEPARATOR::  $/
$ORS::                     $\
$OUTPUT_RECORD_SEPARATOR:: $\
$INPUT_LINE_NUMBER::       $.
$NR::                      $.
$LAST_READ_LINE::          $_
$DEFAULT_OUTPUT::          $>
$DEFAULT_INPUT::           $<
$PID::                     $$
$PROCESS_ID::              $$
$CHILD_STATUS::            $?
$LAST_MATCH_INFO::         $~
$IGNORECASE::              $=
$ARGV::                    $*
$MATCH::                   $&
$PREMATCH::                $`
$POSTMATCH::               $'
$LAST_PAREN_MATCH::        $+