+> I guess this makes sense. I just wonder how well this is actually supported in all
+> browsers.. I looked around and suspect this will work in more recent browsers, but,
+> as an example, https://caniuse.com/ doesn't have that feature listed in their
+> tables. :) -- [[anarcat]]
+
+>> That might well indicate that all major browsers have always supported it so
+>> there is no need to check. I don't see any particular reason why a browser vendor
+>> would not want to accept arbitrary non-whitespace as a valid anchor.
+>>
+>> In practice, minor or old browsers are probably insecure anyway, so I don't care
+>> too much about supporting them perfectly... --s