On Thu, Feb 12, 2015 at 9:52 AM, Benjamin Poulain <benjamin@webkit.org> wrote: > On 2/11/15 2:47 PM, Tab Atkins Jr. wrote: >> The problem with "giving people enough rope to hang themselves" is >> when the mere existence of the feature slows down or complexifies the >> engine as a whole, regardless of whether it's used. > > Can you explain this? Why is that the case? Because being able to handle style invalidations from arbitrarily high up in the tree prevents simplifications that assume that can't happen; at minimum, it probably adds branches in the code which can have measurable perf effects. ~TJReceived on Wednesday, 11 February 2015 22:58:40 UTC
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