Re: [whatwg/url] Restructure URL rendering section and add additional guidance (#434)

estark37 commented on this pull request.



>  
-<p>Due to the confusion that can arise between a <a for=/>URL</a>'s <a for=url>host</a>
-and <a for=url>path</a> with bidirectional text, browsers are encouraged to only render a
-<a for=/>URL</a>'s <a for=url>host</a> in places where it is important for users to
-distinguish between the two. E.g., users are expected to make trust decisions based on a
-<a for=/>URL</a>'s <a for=url>host</a> rendered in the address bar.
+ <li><p>URLs are particularly prone to confusion between host and path when they contain
+ bidirectional text, so in this case it is particularly advisable to only render a URL’s <a
+ for=url>host</a>. Other parts of the <a for=/>URL</a>, if rendered, should have their sequences of
+ <a>percent-encoded bytes</a> replaced with code points resulting from <a>percent decoding</a> those

This bit was in the original section, so I'm not sure what the original motivation was. My motivation for keeping it is that we should avoid having URLs that are so syntax-y that users don't even bother trying to understand them. I prepended "For readability," to this sentence to try to make that clearer. Do you think that helps? (I also added a note that some characters may not be decoded if they present spoofing risks, e.g. Unicode lock.)

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