Ink's screen-reader branch (ink.tsx:617-621) writes the wrapped output
verbatim — `stdout.write(erase + wrappedOutput)` with
`lastOutputToRender = wrappedOutput` (NO appended "\n" in ANY case) and
`lastOutputHeight = wrappedOutput === "" ? 0 : wrappedOutput.split("\n").length`.
The earlier G17 fix only suppressed the trailing newline for the EMPTY SR
frame (`output === ""`); a non-empty multi-line SR frame still fell through
to `output + "\n"`, which (1) parked the cursor on a spurious blank line
below the content and (2) made log-update count the previous frame as N+1
lines, emitting `eraseLines(N+1)` instead of `eraseLines(N)` on every
subsequent multi-line SR frame (off-by-one erase).
Broaden the suppression to ALL screen-reader frames so the written output
and its height match Ink's SR branch exactly. Non-SR interactive frames are
untouched — they still append "\n" as before.
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
Yunfei He
371a5ed556