From da71a23bc05a78c15683784566bbc9baa286c695 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gonc=CC=A7alo=20Silva?= <goncalossilva@gmail.com>
Date: Tue, 6 Mar 2012 16:36:42 +0000
Subject: [PATCH] Don't add sh_LANG class to pre elements when there is no
 LANG.

---
 lib/showoff.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/showoff.rb b/lib/showoff.rb
index 5427cdd01..d61e3faa8 100644
--- a/lib/showoff.rb
+++ b/lib/showoff.rb
@@ -300,7 +300,7 @@ def update_commandline_code(slide)
           lines = out.split("\n")
           if lines.first.strip[0, 3] == '@@@'
             lang = lines.shift.gsub('@@@', '').strip
-            pre.set_attribute('class', 'sh_' + lang.downcase)
+            pre.set_attribute('class', 'sh_' + lang.downcase) if !lang.empty?
             code.content = lines.join("\n")
           end
         end