validate: got test backwards

gemspec: need to list dependencies even if they are in patched tarball

processor/validate.rb

@@ -39,7 +39,7 @@ def text_file?(file)
             bytes = 4096 if bytes > 4096
             s = (File.read(file, bytes) || "")
             s = s.encode('US-ASCII', :undef => :replace).split(//)
-            return ((s.size - s.grep(" ".."~").size) / s.size.to_f) > 0.90
+            return (s.grep(" ".."~").size.to_f / s.size.to_f) > 0.85
         end
 
         # Check that arg is an Integer between opts[:min_value] and

trepanning.gemspec

@@ -17,6 +17,9 @@ Some of the core debugger concepts have been rethought.
 This version works only with a patched version of Ruby 2.1.
 EOF
   spec.add_dependency('redcarpet', '~> 3.2')
+  spec.add_dependency('columnize', '~> 0.9')
+  spec.add_dependency('rb-threadframe', '~> 0.50')
+  spec.add_dependency('linecache-tf', '~> 1.2')
   spec.add_development_dependency('diff-lcs', '~> 0') # For testing only
   spec.author       = 'R. Bernstein'
   spec.bindir       = 'bin'