Rails Upgrade plugin loses found results after a comment

In our app we used the rails_upgrade plugin to find what we needed to fix. We found that the rails:upgrade:check rake task was missing many of our named_scopes. It turns out that the grep command is being scrubbed by gsub and that if the first line in the results was a comment, then all subsequent lines were lost. For example,

Grep results:

/path/to/app/models/article.rb: # named_scope :active /path/to/app/models/article.rb: named_scope :inactive /path/to/app/models/post.rb: named_scope :by_author

You would expect the upgrade to skip the first line and report the second and third line, but at present it returns no results. The attached patch fixes this.