[cozuya]

Is it though? I know standards are important, but what does it really cost a browser maker to be able to resolve paths with backslashes? Similarly, is it really that big of a deal to support background-position-x and y? The prime example of something should have been a spec from the beginning.

[cpeterso]

That road of good intentions leads to maintenance problems like HTML quirks mode and security issues (especially when allowing invalid URLs).