usually considered to be included in text data.
* lib/rdoc/parser.rb (RDoc::Parser.binary?): blksize may be nil
and is irrelevant to whether a file is binary. copied from
above since TAB and newlines would be usually considered to be
included in text data.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@23071 b2dd03c8-39d4-4d8f-98ff-823fe69b080e