This configuration improves git diff, git log -p -W, git grep -p, ...,
and allows to inspect the history of a method with a command like
git log -L:new_constants_in:activesupport/lib/active_support/dependencies.rb
Let me also appeal to authority by saying it is present in the Ruby
repository as well
https://github.com/ruby/ruby/blob/trunk/.gitattributes
:)
Xavier Noria