--- lib/rdoc/options.rb~ 2007-02-13 00:01:19.000000000 +0100 +++ lib/rdoc/options.rb 2007-04-21 22:22:02.000000000 +0200 @@ -550,7 +550,7 @@ ver = nil IO.popen("dot -V 2>&1") do |io| ver = io.read - if ver =~ /dot\s+version(?:\s+gviz)?\s+(\d+)\.(\d+)/ + if ver =~ /dot\s.*version(?:\s+gviz)?\s+(\d+)\.(\d+)/ ok = ($1.to_i > 1) || ($1.to_i == 1 && $2.to_i >= 8) end end