I change some jscript file and want compress it. I have tested ESC, But the compressed JScript seems cannot work. eg: when compress ips_text_editor.js, some function of Editor doesnot work properly.

Which JS Minimizer does IPS use?

It's a custom script written by Matt I believe :)

It probably just uses fopen() and fwrite() and strips all \n ;) Not that complicated at all.

If you can't find the one IPS uses. Dean Edwards' Packer is another great.

If you can't find the one IPS uses.

Dean Edwards' Packer

is another great.

I have tested it online with ips_text_editor.js, it seems work fine. But the .NET, perl and PHP applications of it cannot work...

I will test more, thanks.