From a604fd69724bd15f463051d5cdfd6c5a0c83f054 Mon Sep 17 00:00:00 2001
From: John Mair <jrmair@gmail.com>
Date: Sat, 12 Jan 2013 22:15:25 +0100
Subject: [PATCH] show-source: prettier error messages

---
 lib/pry/commands/show_source.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/pry/commands/show_source.rb b/lib/pry/commands/show_source.rb
index 73356d2e..0748d067 100644
--- a/lib/pry/commands/show_source.rb
+++ b/lib/pry/commands/show_source.rb
@@ -25,6 +25,7 @@ class Pry
 
     # The source for code_object prepared for display.
     def content_for(code_object)
+      raise CommandError, "Cannot locate source!" if !code_object.source
       Code.new(code_object.source, start_line_for(code_object)).
         with_line_numbers(use_line_numbers?).to_s
     end