PEAR_Error and Error_Stack

Hi all, I have been working on a solution to the problems with PEAR_Error for a while, and I think I'm finally getting close to a real, workable solution. I'd like some input - this is not a package proposal, but will become one if things seem all right. http://www.chiaraquartet.net/Error_Stack This is the url for the docs, source (it's a single file), and URL to the download. pear install http://www.chiaraquartet.net/Error_Stack-0.4alpha.tgz to install directly. I did some profiling in PhpEd, and just the empty file with require_once 'Error/Stack.php'; is .6 ms faster. Error_Stack::staticPush() is 0.15 ms faster than PEAR::raiseError() (read: insignificant unless you have LOTS of errors :). These speed improvements would mean nothing if it weren't for the tremendous feature improvements as well. Errors set up with Error_Stack contain the package in which the error originated, and have all the message generation features of Error_Raise, as well as the flexibility to pass in a default error message. In addition, the debug_backtrace() output is parsed to allow display of the actual context (file/line/class/function) where the error occurred - very useful if the same error can be raised in a number of different places in the source code. Also, and most important, BC is possible with PEAR_Error, and forward compatibility with Exceptions in PHP 5 is built-in. In any case, I'd like some feedback on whether all of you would like to see any improvements to the package, or whether there might be a better way to do things. Otherwise, I'll propose it. Greg