options: Use CLI::Parser to parse args

Library/Homebrew/cmd/options.rb

@@ -10,17 +10,37 @@
 
 require "formula"
 require "options"
+require "cli_parser"
 
 module Homebrew
   module_function
 
+  def options_args
+    Homebrew::CLI::Parser.new do
+      usage_banner <<~EOS
+        `options` [<options>] <formulae>
+
+        Display install options specific to <formulae>
+      EOS
+      switch "--compact",
+        description: "Show all options on a single line separated by spaces."
+      switch "--all",
+        description: "Show options for all formulae."
+      switch "--installed",
+        description: "Show options for all installed formulae."
+      switch :debug
+    end
+  end
+
   def options
-    if ARGV.include? "--all"
+    options_args.parse
+
+    if args.all?
       puts_options Formula.to_a.sort
-    elsif ARGV.include? "--installed"
+    elsif args.installed?
       puts_options Formula.installed.sort
     else
-      raise FormulaUnspecifiedError if ARGV.named.empty?
+      raise FormulaUnspecifiedError if args.remaining.empty?
 
       puts_options ARGV.formulae
     end
@@ -30,7 +50,7 @@ module Homebrew
     formulae.each do |f|
       next if f.options.empty?
 
-      if ARGV.include? "--compact"
+      if args.compact?
         puts f.options.as_flags.sort * " "
       else
         puts f.full_name if formulae.length > 1