1 files changed, 33 insertions, 0 deletions
diff --git a/Library/Homebrew/debrew/irb.rb b/Library/Homebrew/debrew/irb.rb
new file mode 100644
index 000000000..c81e3cf4b
--- /dev/null
+++ b/Library/Homebrew/debrew/irb.rb
@@ -0,0 +1,33 @@
+require 'irb'
+
+module IRB
+  @setup_done = false
+
+  def IRB.start_within(binding)
+    unless @setup_done
+      # make IRB ignore our command line arguments
+      saved_args = ARGV.shift(ARGV.size)
+      IRB.setup(nil)
+      ARGV.concat(saved_args)
+      @setup_done = true
+    end
+
+    workspace = WorkSpace.new(binding)
+    irb = Irb.new(workspace)
+
+    @CONF[:IRB_RC].call(irb.context) if @CONF[:IRB_RC]
+    @CONF[:MAIN_CONTEXT] = irb.context
+
+    trap("SIGINT") do
+      irb.signal_handle
+    end
+
+    begin
+      catch(:IRB_EXIT) do
+        irb.eval_input
+      end
+    ensure
+      irb_at_exit
+    end
+  end
+end