Iwas just giving you a hard time. Sorry if you took that seriously.
Here’s what I’ve learned in the past when hacking BB code; Save what I’ve done.
I always export everything i did to some junk text file with all the commands I used and I document every change in the code with // PG (my initials). This allows me to do a quick find . -name “*.php” | xargs grep “// PG” to locate all changes I’ve done.
It makes it much easier to re-add my “mods” after an upgrade of some type.
Also, I know phpBB counts on people moding their forums. Cause of this, they supply patches which can be applied using patch command (they give instructions). This allows you upgrade your forum by applying a patch and providing none of your changes conflict, the patch will work around your code.