linkage: Use Parser to parse args

Library/Homebrew/dev-cmd/linkage.rb

@@ -15,22 +15,31 @@
 
 require "cache_store"
 require "linkage_checker"
+require "cli_parser"
 
 module Homebrew
   module_function
 
   def linkage
+    Homebrew::CLI::Parser.parse do
+      switch "--test"
+      switch "--reverse"
+      switch "--cached"
+      switch :verbose
+      switch :debug
+    end
+
     CacheStoreDatabase.use(:linkage) do |db|
       ARGV.kegs.each do |keg|
         ohai "Checking #{keg.name} linkage" if ARGV.kegs.size > 1
 
-        use_cache = ARGV.include?("--cached") || ENV["HOMEBREW_LINKAGE_CACHE"]
+        use_cache = args.cached? || ENV["HOMEBREW_LINKAGE_CACHE"]
         result = LinkageChecker.new(keg, use_cache: use_cache, cache_db: db)
 
-        if ARGV.include?("--test")
+        if args.test?
           result.display_test_output
           Homebrew.failed = true if result.broken_library_linkage?
-        elsif ARGV.include?("--reverse")
+        elsif args.reverse?
           result.display_reverse_output
         else
           result.display_normal_output