diff -r 250618d1b355 -r ea17aab7cea6 bsc-projects-13.html
--- a/bsc-projects-13.html	Mon Oct 07 15:42:31 2013 +0100
+++ b/bsc-projects-13.html	Mon Oct 07 15:44:32 2013 +0100
@@ -64,7 +64,7 @@
   and can “stab you in the back” according to
   this <A HREF="http://tech.blog.cueup.com/regular-expressions-will-stab-you-in-the-back">blog post</A>.
   For example, if you use in <A HREF="http://www.python.org">Python</A> or 
-  in <A HREF="http://www.ruby-lang.org/en/">Ruby</A> (probably also in other mainstream programming languages) the 
+  in <A HREF="http://www.ruby-lang.org/en/">Ruby</A> (probably also other mainstream programming languages) the 
   innocently looking regular expression <code>a?{28}a{28}</code> and match it, say, against the string 
   <code>aaaaaaaaaaaaaaaaaaaaaaaaaaaa</code> (that is 28 <code>a</code>s), you will soon notice that your CPU usage goes to 100%. In fact,
   Python and Ruby need approximately 30 seconds of hard work for matching this string. You can try it for yourself:
@@ -553,7 +553,7 @@
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