we don't want zombies running around

lib/rocco.rb

@@ -142,6 +142,7 @@ class Rocco
     # then fork off a child process to write the input.
     code_html = nil
     open("|pygmentize -l ruby -f html", 'r+') do |fd|
+      pid =
         fork {
           fd.close_read
           fd.write code_blocks.join("\n\n# DIVIDER\n\n")
@@ -151,6 +152,7 @@ class Rocco
       fd.close_write
       code_html = fd.read
       fd.close_read
+      Process.wait(pid)
     end
 
     # Do some post-processing on the pygments output to split things back