lucy24 - 3:46 am on Mar 7, 2012 (gmt 0)

I suggest shopping for a new text editor, one that does search and replace on files without opening them.

After some experimenting I found that the magic words are "batch processor", and quickly downloaded two different programs to play with.

I suspect this is one of those things like unsupervised global replaces using Regular Expressions that take a long, long time to work up the courage to do ;) But when the alternative is to venture into Server Side Includes...