Henri Sivonen

> Note that at the moment it will optimize (Latin1, Utf16) but not the other way around Since the prefix is taken from `left`, it's desirable to have have the...

My main concern is that I want to preserve the file format for the preferred form form making modifications to the test, since there are non-WPT consumers of those formats....

> (`replace-with`, `replace-children`, `after`, `before`, `append`, `prepend`). How strongly motivated are the modes other than `replace-children` and `append`? It seems that `replace-children` is removing children and then doing `append`, right?...

The Gecko-side status is: 1. I want Gecko's _parser_ limit to match Blink's _parser_ limit exactly. Blink's magic number is 512, but if you put it in the spec, be...

> That said, I still think that the risk of denial of service attacks alone warrants a limit. I disagree. There are so many ways to crash a browser engine...

Specifically, in places where the code calls `nodeFromStackWithBlinkCompat()`, instead of taking the most-recently-pushed element from the tree builder stack, element at index 511 is taken if there are more elements...

> would you be willing to submit a pull request? Unfortunately, I expect not to have time for this in the near future. However, if someone want to volunteer, I...

> From my perspective the ideal end state is we wouldn't have Japanext or HijriSimulated in ICU4X. I think they shouldn't be there but we have semver, and what's the...

Maybe `hourCycle` is available via `-u-hc-`? Still leaves `hour12` (which happens to be what appears in various preference UIs).

`hourCycle` is in `icu_datetime::options::components::Bag`.