[sending (again, sorry) from correct e-mail] I think Nick's replies <https://lists.webkit.org/pipermail/webkit-dev/2019-December/030998.html> mostly still apply, some updated answers to those questions.
(1) We’re concerned about compatibility issues in a world where some > browsers support this but not all. Aware browsers will strip `:~:`, but > unaware browsers won’t. I saw that on the blink-dev ItS thread, it was > mentioned that at least one site (webmd.com) totally breaks if any > fragment ID is exposed to the page. This makes it difficult to create a > link that uses this feature but which is safe in all browsers: > - Since there is no feature detection mechanism, it’s hard for a webpage > to know whether it should issue such a link. It would have to be based on > UA string checks, which is regrettable. > - A link meant for a supporting browser can end up in a non-supporting > browser, at the very least by copy paste from the URL field, and perhaps > through other features to share a link. > We do have a feature detection <https://github.com/WICG/scroll-to-text-fragment/#feature-detection-and-future-apis> mechanism for this. On the latter point, this is true but we think implementing fragment directive stripping (removing the part after and including `:~:`) is trivial even if the UA doesn't wish to implement the text-fragment feature. FWIW, we haven't seen or heard of another such example since. > (2) The portions of this Community Group report that monkey patch other > standards (HTML, URL and CSSOM View I think?) should be turned into PRs > against those specifications. Monkeypatching other specs is not a good way > to build specifications for the long term. > We still need support from another vendor to start merging the monkey patches into the real standards - if Apple's supportive I'd be happy to start on that immediately. > (3) Text fragment trumping a regular fragment ID seems a bit strange. The > more natural semantic would be that the text search starts at the fragment, > so if there are multiple matches it’s possible to scroll to a more specific > one. It’s not clear why the fragment is instead entirely ignored. > This was discussed in more detail in issue#75 <https://github.com/WICG/scroll-to-text-fragment/issues/75>; I agree with Nick's point that the disambiguation syntax is already specific enough that starting from a fragment isn't necessary. This also keeps us mostly-compatible with the TextQuoteSelector <https://www.w3.org/TR/annotation-model/#text-quote-selector> specified in WebAnnotations which I think may have benefits for interaction with annotation applications. On Mon, Aug 31, 2020 at 1:31 PM David Bokan <bo...@google.com> wrote: > I think Nick's replies > <https://lists.webkit.org/pipermail/webkit-dev/2019-December/030998.html> > mostly still apply, some updated answers to those questions. > > (1) We’re concerned about compatibility issues in a world where some >> browsers support this but not all. Aware browsers will strip `:~:`, but >> unaware browsers won’t. I saw that on the blink-dev ItS thread, it was >> mentioned that at least one site (webmd.com) totally breaks if any >> fragment ID is exposed to the page. This makes it difficult to create a >> link that uses this feature but which is safe in all browsers: >> - Since there is no feature detection mechanism, it’s hard for a webpage >> to know whether it should issue such a link. It would have to be based on >> UA string checks, which is regrettable. >> - A link meant for a supporting browser can end up in a non-supporting >> browser, at the very least by copy paste from the URL field, and perhaps >> through other features to share a link. >> > > We do have a feature detection > <https://github.com/WICG/scroll-to-text-fragment/#feature-detection-and-future-apis> > mechanism for this. > > On the latter point, this is true but we think implementing fragment > directive stripping (removing the part after and including `:~:`) is > trivial even if the UA doesn't wish to implement the text-fragment feature. > FWIW, we haven't seen or heard of another such example since. > > >> (2) The portions of this Community Group report that monkey patch other >> standards (HTML, URL and CSSOM View I think?) should be turned into PRs >> against those specifications. Monkeypatching other specs is not a good way >> to build specifications for the long term. >> > > We still need support from another vendor to start merging the monkey > patches into the real standards - if Apple's supportive I'd be happy to > start on that immediately. > > >> (3) Text fragment trumping a regular fragment ID seems a bit strange. The >> more natural semantic would be that the text search starts at the fragment, >> so if there are multiple matches it’s possible to scroll to a more specific >> one. It’s not clear why the fragment is instead entirely ignored. >> > > This was discussed in more detail in issue#75 > <https://github.com/WICG/scroll-to-text-fragment/issues/75>; I agree with > Nick's point that the disambiguation syntax is already specific enough that > starting from a fragment isn't necessary. This also keeps us > mostly-compatible with the TextQuoteSelector > <https://www.w3.org/TR/annotation-model/#text-quote-selector> specified > in WebAnnotations which I think may have benefits for interaction with > annotation applications. > > On Mon, Aug 31, 2020 at 12:42 PM Darin Adler <da...@apple.com> wrote: > >> On Aug 31, 2020, at 9:33 AM, David Bokan <bo...@chromium.org> wrote: >> >> We've made lots of improvements to the spec, notably around issues raised >> in Mozilla's standards-position >> <https://github.com/mozilla/standards-positions/issues/194>. >> >> >> Do you think those improvements address Maciej’s concerns from last >> December? Since you didn’t say that explicitly I was wondering what your >> take on that was. >> >> — Darin >> >
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