Improve superenv add/remove message.

* Now it includes all flags that are added or removed by superenv when
  passing "--verbose" or envvar VERBOSE or HOMEBREW_VERBOSE is set.

Library/ENV/4.3/cc

@@ -86,7 +86,7 @@ class Cmd
     else
       args << "-syslibroot" << $sdkroot
     end if nclt?
-    case mode
+    allflags = case mode
     when :ccld
       cflags + args + cppflags + ldflags
     when :cc
@@ -98,6 +98,8 @@ class Cmd
     when :ld
       ldflags + args
     end.compact
+    make_fuss(allflags) if verbose?
+    allflags
   end
   def refurbished_args
     lset = Set.new(libpath + syslibpath)
@@ -148,7 +150,6 @@ class Cmd
         args << arg
       end
     end
-    make_fuss(args)
     args
   end
   def cflags
@@ -220,6 +221,9 @@ class Cmd
     STDERR.puts "brew: superenv deduped: #{dups}" unless dups.empty?
     STDERR.puts "brew: superenv added: #{adds*' '}" unless adds.empty?
   end
+  def verbose?
+    !ENV['VERBOSE'].nil? || !ENV['HOMEBREW_VERBOSE'].nil?
+  end
 end
 
 if __FILE__ == $PROGRAM_NAME

Library/brew.rb

@@ -58,6 +58,8 @@ end
 begin
   trap("INT", std_trap) # restore default CTRL-C handler
 
+  ENV['HOMEBREW_VERBOSE'] = "1" if ARGV.verbose?
+
   aliases = {'ls' => 'list',
              'homepage' => 'home',
              '-S' => 'search',