missing: Use CLI::Parser to parse args

Library/Homebrew/cmd/missing.rb

@@ -10,11 +10,31 @@
 require "formula"
 require "tab"
 require "diagnostic"
+require "cli_parser"
 
 module Homebrew
   module_function
 
+  def missing_args
+    Homebrew::CLI::Parser.new do
+      usage_banner <<~EOS
+        `missing` [<options>] [<formulae>]
+
+        Check the given <formulae> for missing dependencies. If no <formulae> are
+        given, check all installed brews.
+
+        `missing` exits with a non-zero status if any formulae are missing dependencies.
+      EOS
+      comma_array "--hide",
+        description: "Act as if none of the provided <hidden> are installed. <hidden> should be "\
+                     "comma-separated list of formulae."
+      switch :verbose
+      switch :debug
+    end
+  end
+
   def missing
+    missing_args.parse
     return unless HOMEBREW_CELLAR.exist?
 
     ff = if ARGV.named.empty?
@@ -24,7 +44,7 @@ module Homebrew
     end
 
     ff.each do |f|
-      missing = f.missing_dependencies(hide: ARGV.values("hide"))
+      missing = f.missing_dependencies(hide: args.hide)
       next if missing.empty?
 
       Homebrew.failed = true