shell(cat): serve a second cat on the same stdin instead of hanging or panicking - #39638

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robobun wants to merge 6 commits into

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farm/7912ac1f/shell-cat-shared-stdin-reader

Commits on Aug 19, 2026

shell(cat): restart a shared stdin reader for a later cat and notify each listener once
robobun
committed
56c2e75
shell(IOReader): describe when a &mut ReaderImpl is live during the reader callbacks
robobun
committed
ab166bf
shell(IOReader): shorten the comments on reader(), start(), the chunk callback and take_readers
robobun
committed
9692538
test(shell/cat): pin the restart semantics, the re-registered poll, and the read-error path on Windows
robobun
committed
0b43846
test(shell/cat): fail the tty case on an early child exit instead of timing out
robobun
committed
7a9ef6f
shell(cat): on Windows, finish a cat that starts after the shared stdin reader reached EOF
robobun
committed
95c65c2