As far as I know there is a –fail-fast flag in Rspec2 to stop running test execution whenever it fails:
rspec spec/ --fail-fast
Apparently this flag does not exist in Rspec1:
spec spec/ --fail-fast
invalid option: --fail-fast (OptionParser::InvalidOption)
Any hint?
As i mention in my comment
fail-fastoption was added on rspec 2.1 version.The closest behavior to what you want to achieve are gems like rspec-instafail or fuubar.