Do not require `compat/hbc/cli/update` when `—no-compat` is specified.

Library/Homebrew/cask/lib/hbc/cli.rb

@@ -19,7 +19,6 @@ require "hbc/cli/reinstall"
 require "hbc/cli/search"
 require "hbc/cli/style"
 require "hbc/cli/uninstall"
-require "compat/hbc/cli/update"
 require "hbc/cli/zap"
 
 require "hbc/cli/internal_use_base"
@@ -77,6 +76,7 @@ module Hbc
     def self.command_classes
       @command_classes ||= constants.map(&method(:const_get))
                                     .select { |sym| sym.respond_to?(:run) }
+                                    .sort_by(&:command_name)
     end
 
     def self.commands

Library/Homebrew/cask/lib/hbc/locations.rb

+require "tap"
+
 module Hbc
   module Locations
     def self.included(base)

Library/Homebrew/compat/hbc.rb

 require "compat/hbc/cask_loader"
+require "compat/hbc/cli/update"

Library/Homebrew/compat/hbc/cli/update.rb

+require "cask/lib/hbc/cli/base"
+
 module Hbc
   class CLI
     class Update < Base