A session on a fresh directory sat on Claude's "Quick safety check: Is
this a project you created or one you trust?" dialog until a human
pressed Enter. Reproduced on a new case, then read off the wire:
1.\x1b[C Yes,\x1b[C I\x1b[C trust\x1b[C this\x1b[C folder
tmux repaints a row by writing each word followed by a cursor-forward
escape instead of a space, and Ink colours each word separately, so
`data.includes('trust this folder')` could never match a chunk. The
spaces are not there to strip: they were never sent. The auto-accept has
been dead for every session that hit the dialog.
Match on whitespace-free, ANSI-free, lowercased text instead
(`compactScreenText`), which survives both that repaint style and the
spaced full-screen redraw.
Answering means pressing Enter into a session, so three guards bound it:
- Read the RENDERED SCREEN (capturePaneText), not the chunk. The terminal
buffer is append-only and keeps the dialog in its tail long after it
has been answered, so a retry driven off the buffer would type into a
live session. Direct-PTY sessions, which have no pane, fall back to a
short buffer tail.
- Require a trust phrase AND the dialog's own confirm affordance. One
phrase is not enough, since an agent's transcript can quote it.
- Only look during the first 90s of the pane's life, and cap it at three
attempts. Ink can drop a keystroke while it is still mounting the
widget, which is the other half of why sessions got stuck, but a
dialog that will not clear must not become an Enter loop.
Verified end to end on a fresh case: dialog answered on attempt 1, one
Enter sent in total, session went straight to the composer and answered a
prompt. Before the fix the same flow parked on the dialog indefinitely.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>