--00151750db1c95b8070468317b2d Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Here's my solution - a bit quick-and-dirty, but I had fun writing it :) martin --00151750db1c95b8070468317b2d Content-Type: application/octet-stream; name="ffill.rb" Content-Disposition: attachment; filename="ffill.rb" Content-Transfer-Encoding: base64 X-Attachment-Id: f_ftuyttgu0 ZGVmIGdldF9iaXRtYXAKICBhID0gPDxIRVJFCi4uLi4uLi4uLi4uLi4uLi4uLi4uCi5vb29vb28u Li4uLi4uLi4uLi4uCi5vLi4uLi5vb29vLi4uLi4uLi4uCi4uby4uLi4uLi4ub29vLi4uLi4uCi4u by4uLi4uLi4uLi4uby4uLi4uCi4uby4uLi4uLi4uLi4uby4uLi4uCi4uLm8uLi5vby4uLi4uby4u Li4uCi4uby4uLm8uby4uLi4uby4uLi4uCi4uby4uLm9vby4uLi4ub28uLi4uCi4uby4uLi4uLi4u Li4uLi5vLi4uCi4uby4uLi4uLi5vLi4uLi5vLi4uCi4ub28uLi4uLm8uby4uLi5vLi4uCi4uLi5v Li4uLm8ub29vb28uLi4uCi4uLi5vLi4uLm8uLi4uLi4uLi4uCi4uLi5vLi4uLi5vb29vb28uLi4u Ci4uLi5vb28uLi4uLi4uLi5vLi4uCi4uLi4uLm9vby4uLi5vb28uLi4uCi4uLi4uLi4uLm8uLi5v Li4uLi4uCi4uLi4uLi5vb29vb28uLi4uLi4uCi4uLi4uLi4uLi4uLi4uLi4uLi4uCkhFUkUKICBh LnNwbGl0KCJcbiIpLm1hcCB7fGl8IGkuc3BsaXQoIiIpfQplbmQKCmRlZiBsZWdhbCh4LHkpCiAg eCA8IDIwIGFuZCB5IDwgMjAgYW5kIHggPj0gMCBhbmQgeSA+PSAwIGFuZCAkYm1wW3ldW3hdICE9 ICJvIiBhbmQgJGJtcFt5XVt4XSAhPSAiKiIKZW5kCgpkZWYgZmlsbF9zdGVwKG1ldGgpCiAgeCx5 ID0gbWV0aCA9PSA6c3RhY2sgPyAkcXVldWUucG9wIDogJHF1ZXVlLnNoaWZ0CiAgaWYgbGVnYWwo eCx5KQogICAgZmlsbF9jZWxsKHgsIHkpCiAgICBbW3gtMSx5XSwgW3gseS0xXSwgW3gseSsxXSwg W3grMSwgeV1dLmVhY2ggZG8gfGksanwgCiAgICAgICRxdWV1ZS5wdXNoIFtpLGpdIGlmIGxlZ2Fs KGksaikKICAgIGVuZAogIGVuZAplbmQKCmRlZiBmaWxsX2NlbGwoeCwgeSkKICBjZmlsbCh5LCB4 LCAiIzc3NzdkZCIpCiAgJGJtcFt5XVt4XSA9ICIqIgplbmQKCmRlZiBjZmlsbChjb2wsIHJvdywg YykKICAkY2FudmFzLmZpbGwgYwogICRjYW52YXMucmVjdCA6bGVmdCA9PiByb3cqMzAsIDpyaWdo dCA9PiAocm93KzEpKjMwLCA6dG9wID0+IGNvbCozMCwgOmJvdHRvbSA9PiAoY29sKzEpKjMwCiAg JGNhbnZhcy5zaG93CmVuZAoKZGVmIHJlc2V0X2dyaWQKICAkYm1wID0gZ2V0X2JpdG1hcAogICRi bXAuZWFjaF93aXRoX2luZGV4IHt8cm93LCBqfAogICAgcm93LmVhY2hfd2l0aF9pbmRleCB7fGNl bGwsIGl8CiAgICAgIGMgPSBjZWxsID09ICJvIiA/ICIjMTExMTY2IiA6ICIjZWVlZWNjIiAKICAg ICAgY2ZpbGwoaiwgaSwgYykKICAgIH0KICB9CiAgJHF1ZXVlID0gW10KZW5kCgpkZWYgcnVuX2Fu aW1hdGlvbihtZXRoKQogICRydW5uaW5nID8gcmV0dXJuIDogJHJ1bm5pbmcgPSB0cnVlCiAgcmVz ZXRfZ3JpZAogIHgsIHkgPSByYW5kKDIwKSwgcmFuZCgyMCkKICB3aGlsZSAkYm1wW3ldW3hdICE9 ICIuIgogICAgeCwgeSA9IHJhbmQoMjApLCByYW5kKDIwKQogIGVuZAogICRxdWV1ZS5wdXNoIFt4 LCB5XQogIEBhbmltID0gYW5pbWF0ZSgyMCkgZG8KICAgIGlmICRxdWV1ZS5lbXB0eT8gCiAgICAg IEBhbmltLnN0b3AKICAgICAgJHJ1bm5pbmcgPSBmYWxzZQogICAgZWxzZSAKICAgICAgZmlsbF9z dGVwKG1ldGgpCiAgICBlbmQKICBlbmQKZW5kCgpTaG9lcy5hcHAgOndpZHRoID0+IDYwMCwgOmhl aWdodCA9PiA3MDAsIDpyZXNpemFibGUgPT4gZmFsc2UsIDp0aXRsZSA9PiAiRmxvb2RmaWxsIiBk byAKICAkY2FudmFzID0gaW1hZ2UgNjAwLCA2MDEsIDp0b3AgPT4gMCwgOmxlZnQgPT4gMCAKICBy ZXNldF9ncmlkCgogIHN0YWNrIDpoZWlnaHQgPT4gNzksIDp0b3AgPT4gNjIwIGRvCiAgICBmbG93 IGRvCiAgICAgIGJ1dHRvbigiU3RhY2siKSB7IHJ1bl9hbmltYXRpb24oOnN0YWNrKSB9CiAgICAg IGJ1dHRvbigiUXVldWUiKSB7IHJ1bl9hbmltYXRpb24oOnF1ZXVlKSB9CiAgICAgIGJ1dHRvbigi Q2xlYXIiKSB7IHJlc2V0X2dyaWQgfQogICAgICBidXR0b24oIlF1aXQiKSAgeyBxdWl0IH0KICAg IGVuZAogIGVuZAplbmQK --00151750db1c95b8070468317b2d--