1 files changed, 10 insertions, 1 deletions
diff --git a/lib/rubygems/rdoc.rb b/lib/rubygems/rdoc.rb
index 15ccc3e455..f16c8696f0 100644
--- a/lib/rubygems/rdoc.rb
+++ b/lib/rubygems/rdoc.rb
@@ -37,6 +37,7 @@ end
 class Gem::RDoc # :nodoc: all
 
   include Gem::UserInteraction
+  extend  Gem::UserInteraction
 
   @rdoc_version = nil
   @specs = []
@@ -70,7 +71,8 @@ class Gem::RDoc # :nodoc: all
   # +specs+
 
   def self.generation_hook installer, specs
-    types     = installer.document
+    start = Time.now
+    types = installer.document
 
     generate_rdoc = types.include? 'rdoc'
     generate_ri   = types.include? 'ri'
@@ -78,6 +80,13 @@ class Gem::RDoc # :nodoc: all
     specs.each do |spec|
       new(spec, generate_rdoc, generate_ri).generate
     end
+
+    return unless generate_rdoc or generate_ri
+
+    duration = (Time.now - start).to_i
+    names    = specs.map(&:name).join ', '
+
+    say "Done installing documentation for #{names} after #{duration} seconds"
   end
 
   ##