find-command uses ruby18_source_location on 1.8

* also now using stagger_output to page long output
* made more robust by rescuing/ignoring exceptions generated by stupid constant auto-loading

lib/pry/default_commands/find_method.rb

@@ -3,10 +3,19 @@ class Pry
     FindMethod = Pry::CommandSet.new do
 
       create_command "find-method" do
+        extend Helpers::BaseHelpers
+
         group "Context"
 
+        options :requires_gem => "ruby18_source_location" if mri_18?
+
         description "Recursively search for a method within a Class/Module or the current namespace. find-method [-n | -c] METHOD [NAMESPACE]"
 
+
+        def setup
+          require 'ruby18_source_location' if mri_18?
+        end
+
         def options(opti)
           opti.on :n, :name, "Search for a method by name"
           opti.on :c, :content, "Search for a method based on content in Regex form"
@@ -36,7 +45,7 @@ class Pry
           else
             puts text.bold("Methods Matched")
             puts "--"
-            puts to_put
+            stagger_output to_put.join("\n")
           end
 
         end
@@ -67,7 +76,11 @@ class Pry
             end
           end
           klass.constants.each do |klazz|
-            meths += ((res = content_search(pattern, klass.const_get(klazz), current, the_methods)) ? res : [])
+            begin
+              meths += ((res = content_search(pattern, klass.const_get(klazz), current, the_methods)) ? res : [])
+            rescue Pry::RescuableException
+              next
+            end
           end
           return meths.uniq.flatten
         end

lib/pry/helpers/base_helpers.rb

@@ -110,6 +110,14 @@ class Pry
         RbConfig::CONFIG['ruby_install_name'] == 'rbx'
       end
 
+      def mri_18?
+        RUBY_VERSION =~ /1.8/ && RbConfig::CONFIG['ruby_install_name'] == 'ruby'
+      end
+
+      def mri_19?
+        RUBY_VERSION =~ /1.9/ && RbConfig::CONFIG['ruby_install_name'] == 'ruby'
+      end
+
       # a simple pager for systems without `less`. A la windows.
       def simple_pager(text, output=output())
         text_array = text.lines.to_a
@@ -138,7 +146,7 @@ class Pry
           # Sys.
           $stdout
         end
-          
+
         if text.lines.count < page_size || !Pry.pager
           out.puts text
           return