#mozregression mozregression is an interactive regression range finder for Mozilla nightly builds.

#install you can install mozregression with setuptools or pip. OS-specific instructions

easy_install mozregression

#usage To find the regression range for a bug, supply mozregression with the date of the last known good nightly and the date of a bad nightly (optional): mozregression --good=2010-03-16 --bad=2010-09-08

This will download and run several nightly builds on new profiles and narrow down the range. After checking a few nightlies, you'll get the regression range which looks something like this: Last good nightly: 2010-09-08 First bad nightly: 2010-09-09

Pushlog: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=36f5cf6b2d42&tochange=8e0fce7d5b49

#other options Just run the nightly for a particular date: moznightly --date=2010-10-23

Find regression range on Thunderbird nightlies: mozregression --app=thunderbird

Find regression range on Firefox mobile nightlies: mozregression --app=mobile

Other branches/repos: mozregression --repo=mozilla-1.9.2

Other options exist for running the nightlies with a particular profile, addons, and browser arguments.