Disclaimer: this is completely un-recommended and don't do this, unless you work on the ColdFusion development team!

...now that's out of the way...

In my previous post I told you about the file that stores all the Tag definitions for CF tags. I was wrong, it stores MOST of them, as Todd Sharp pointed out here on Andy Jarrett's Blog (see comments)

If you check the "WEB-INF\cftags" folder, you will see the ".cfm" files cache,dump,savecontent and trace. I suspect these are the tags missing from that XML file...

If you see Jared's comment on Andy's blog: [quote]... they're technically custom tags that are globally available...[/quote]

Also there is the base "component.cfc" that all CFC's extend by default.

"So, what happens if you add your own '.cfm' file to this dir?" I asked myself...

So I created a "david.cfm" file and add the text "david".

Now I have a <cfdavid> tag! it takes no attributes and outputs "david" to the page.

CFML already has custom tags, and I would STRONGLY SUGGEST using these rather than what I have done just above!

I find it a bit interesting learning a little about how CF works, but I wouldn't suggest playing with the inner workings of CF to much! :-)