So I was working on improving a DOS emulator, when I found that something seemingly trivial wasn’t working right when COMMAND.COM was asked to do the following: echo AB> foo.txtecho CD>> foo.txt Instead of ABCD, foo.txt contained ABBC. I verified … <a href=“http://www.os2museum.com/wp/i-thought-i-found-a-bug/”>Continue reading <span class=“meta-nav”>→</span></a>