You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
ImprovementsKind: in v2.1.219,
ImprovementsSection of the release
What
When the only change to a frame is text appended to the current row and the frame is anchored, the renderer writes just the new characters plus cursor moves rather than redrawing the tail of the output.
Details
an anchor state of "clean", "lastRowAnchored" or "broken" decides when the fast path is safe
a broken anchor falls back to the existing redraw of the tail
lives in the screen-reader rendering path
Evidence
lastRowAnchored
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
