jackmoore/autosize — pull request #40 by joe1chen (2012-11-28 22:40:33+00:00)
Title: Add check so mirror is only appended to body once. 

Thanks for the plugin! I'm using it on pages where textareas are created via ajax. I saw that multiple mirror elements were appended to the body. So I modified the code to add an id for the mirror element, and check for that element before appending to body.