maintain console click through

[devinrhode2]

If I display a string "file://localhost/Users/drhode/Desktop/fiddle.html:7" in the console, you'll be able to click through and see line 7 of fiddle.html highlighted.

So we want to hijack onerror to get the file url and line number in chrome, and store the arguments in a window.lastArgs
onerror = function(){console.log(arguments)};