* lib/net/imap.rb (example): use IO#noecho to read password if

possible, and defer until needed.  [ruby-dev:41889]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28798 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/net/imap.rb

@@ -3488,12 +3488,10 @@ EOF
 
   def get_password
     print "password: "
-    system("stty", "-echo")
     begin
-      return gets.chop
+      return _noecho(&:gets).chomp
     ensure
-      system("stty", "echo")
-      print "\n"
+      puts
     end
   end
 
@@ -3546,7 +3544,9 @@ EOF
   imap = Net::IMAP.new($host, :port => $port, :ssl => $ssl)
   begin
     imap.starttls if $starttls
-    password = get_password
+    class << password = method(:get_password)
+      alias to_str call
+    end
     imap.authenticate($auth, $user, password)
     while true
       cmd, *args = get_command