Let cops run without --strict flag

Library/Homebrew/cmd/style.rb

@@ -15,6 +15,8 @@
 
 require "utils"
 require "json"
+require "rubocop"
+require_relative "../rubocops"
 
 module Homebrew
   module_function
@@ -54,6 +56,10 @@ module Homebrew
     ]
     args << "--auto-correct" if fix
 
+    if options[:only]
+      args << "--only" << RuboCop::Cop::Cop.registry.with_department(options[:only]).names.join(" ")
+    end
+
     if files.nil?
       args << "--config" << HOMEBREW_LIBRARY_PATH/".rubocop.yml"
       args += [HOMEBREW_LIBRARY_PATH]

Library/Homebrew/dev-cmd/audit.rb

@@ -75,9 +75,14 @@ module Homebrew
       style_results = check_style_json(files, options)
     end
 
+    if !strict
+      options = { fix: ARGV.flag?("--fix"), realpath: true, only: :Homebrew }
+      style_results = check_style_json(files, options)
+    end
+
     ff.each do |f|
       options = { new_formula: new_formula, strict: strict, online: online }
-      options[:style_offenses] = style_results.file_offenses(f.path) if strict
+      options[:style_offenses] = style_results.file_offenses(f.path)
       fa = FormulaAuditor.new(f, options)
       fa.audit