Support reading from stdin

[ernstki]

Thanks for releasing this out into the world. Works as advertised, no muss, no fuss.

"Give me the first column from an HTML table" seems like a thing that lots of people would want to do. I'm surprised at the apparent dearth of tools for that task. Maybe the world moved to XML, and then JSON, and I missed the moment. Surprised that pup, xidel, htmlq, or one of those didn't already do this—at least not in a straightforward manner.

I know you put some effort into loading the URL using the Ruby facilities for that, but I was already using curl to handle authentication to an internal site, and so reading from standard input seemed like the appropriate, Unixy thing to do.

Nowadays, even Windows has a curl, which is probably just a wrapper around some PowerShell Get-URL or whatever like that.

[ernstki]

Does need a bit of work to support colspans and rowspans, though, in order to fit my particular use case. And that's a tough problem would take a bit of effort to implement.