command: handle multiple named args

Library/Homebrew/cmd/command.rb

@@ -23,7 +23,8 @@ module Homebrew
 
     raise UsageError, "This command requires a command argument" if args.remaining.empty?
 
-    cmd = HOMEBREW_INTERNAL_COMMAND_ALIASES.fetch(args.remaining.first, args.remaining.first)
+    args.remaining.each do |c|
+      cmd = HOMEBREW_INTERNAL_COMMAND_ALIASES.fetch(c, c)
       path = Commands.path(cmd)
       cmd_paths = PATH.new(ENV["PATH"]).append(Tap.cmd_directories) unless path
       path ||= which("brew-#{cmd}", cmd_paths)
@@ -33,3 +34,4 @@ module Homebrew
       puts path
     end
   end
+end