# File lib/mspec/runner/mspec.rb, line 267
267:   def self.tags_file
268:     patterns = retrieve(:tags_patterns) ||
269:                [[%r(spec/), 'spec/tags/'], [/_spec.rb$/, '_tags.txt']]
270:     patterns.inject(retrieve(:file).dup) do |file, pattern|
271:       file.gsub(*pattern)
272:     end
273:   end