You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Terminal UIArea: what it touches
Internal ChangesKind: in v2.1.239,
Internal ChangesSection of the release
What
Every write to the terminal is timed and the slowest one is kept for later inspection, and where configured, an EIO or EPIPE error marks stdout dead instead of raising. Byte counts are reported back to the code that commits output.
Evidence
tolerateDeadStdout
Strings lifted out of the shipped bundle, so the claim above can be checked against them.