load_mime_types

# File lib/webrick/httputils.rb, line 110
    def load_mime_types(file)
      # note: +file+ may be a "| command" for now; some people may
      # rely on this, but currently we do not use this method by default.
      open(file){ |io|
        hash = Hash.new
        io.each{ |line|
          next if /^#/ =~ line
          line.chomp!
          mimetype, ext0 = line.split(/\s+/, 2)
          next unless ext0
          next if ext0.empty?
          ext0.split(/\s+/).each{ |ext| hash[ext] = mimetype }
        }
        hash
      }
    end