[Webkit-unassigned] [Bug 25757] Cursor gets stuck when highlighting a textarea using Shift+Up

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=25757





--- Comment #10 from Levi Weintraub <leviw at chromium.org>  2011-01-31 11:59:03 PST ---
Ahh, more bugs from my early days. Apologies...

The source of this bug is VisibleSelection. VisibleSelection, in an effort to avoid the overhead and relayout issues of VisiblePositions, uses a set of Positions and one affinity. The single affinity is only used for Caret selections, which does not cover all cases, this one included.

VisibleSelection needs *at least* two affinities, one each for start and end, so it can keep track of a selection that covers both a downstream and upstream Position like the one we're trying to make here.

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