Okay, thanks Alexander and Bernstein. I'll lookinto Emacs 23, but I'm worried about compatibility with modes. Does all the stuff that works in Emacs 21 work in 23? Like even that ipython.el file, does it work in Emacs 23? And, I probably will report a bug to either Ubuntu's Launchpad or to Debian's package maintainer for pdb mode (which apparently has been integrated into just the gud mode stuff, at least that's how it looks from looking around on my system). Does Debian have a web site for reporting bugs like Ubuntu does? Or, do I just email the package maintainer?
I'm messing around with ipython.el and ipython now. It looks like if you just want to step through some code that isn't throwing any execption, you have to modify the source code of your script to tell ipython to stop on this line and start debugging here? With all the raving about ipython, I'm sure it's a great product. But, this thing about having to modify your source code really sounds like it sucks. I'd be surprised if it were difficult to implement a command line option for ipython that tells it to open this file and then start debugging it from the top. And, have the emacs mode operate much like it does with pdb, where emacs remembers your command line when you invoked pdb, so you just hit "M-x pdb RET RET RET ..." to open up your file. But, maybe I just haven't foud it yet? -- http://mail.python.org/mailman/listinfo/python-list
