We just shipped a new beta of Komodo 4.1. The Rails debugging is much faster -- about 60x, thanks to a total rewrite pulling out my home-grown version 1.8.2-type backend, and substituting in Kent Sibilev's ruby-debug-base component. 60x is a good factor: what used to literally take a minute now takes a second.
A bonus feature is if you set a breakpoint in an RHTML file, and start the debugger, the debugger will stop at that point. Examine variables, use the interactive shell to explore a bit, and then continue, just like you're debugging any other program. The only difference is that it looks like you're debugging Ruby code in RHTML files, when in fact you're walking through the underlying ERb code, but the debugger automatically maps to the RHTML view.
The best thing about this feature is that I didn't have to write a line of code to make it happen.
- Eric
