Question

How could I use ruby to extract information from a table consisting of these rows? Is it possible to detect the comments using nokogiri?

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Answer 1

You could implement a Nokogiri SAX Parser. This is done faster than it might seem at first sight. You get events for Elements, Attributes and Comments.

Within your parser, your should rememeber the state, like @currently_interested = true to know which parts to rememeber and which not.