Doing a "cap -e" in an emacs buffer generates an error:
$ cap -e deploy
------------------------------------------------------------
cap deploy
------------------------------------------------------------
/var/lib/gems/1.8/gems/capistrano-2.1.0/lib/capistrano/cli/help.rb:87:in `format_text': can't do {n,m} with n > m: /(.{1,0})(?:\s+|\Z)/ (RegexpError)
from /var/lib/gems/1.8/gems/capistrano-2.1.0/lib/capistrano/cli/help.rb:84:in `each_line'
from /var/lib/gems/1.8/gems/capistrano-2.1.0/lib/capistrano/cli/help.rb:84:in `format_text'
from /var/lib/gems/1.8/gems/capistrano-2.1.0/lib/capistrano/cli/help.rb:69:in `explain_task'
from /var/lib/gems/1.8/gems/capistrano-2.1.0/lib/capistrano/cli/help.rb:17:in `execute_requested_actions'
from /var/lib/gems/1.8/gems/capistrano-2.1.0/lib/capistrano/cli/execute.rb:31:in `execute!'
from /var/lib/gems/1.8/gems/capistrano-2.1.0/lib/capistrano/cli/execute.rb:14:in `execute'
from /var/lib/gems/1.8/gems/capistrano-2.1.0/bin/cap:5
