Bash can point Claude to the full output that tail cut off

What

Claude often runs commands that end in | tail, which keeps only the last lines of output. Claude Code can now notice this, keep the full input to tail in a file, and add a note such as 'Full output ({size}): {path} Read it instead of re-running.' (or 'Full input to tail').

• This applies when the run takes long enough and tail threw away some input, and only when the saved file is larger than what was returned.
• It works only on Linux, without CLAUDE_CODE_SHELL_PREFIX set, and under some other conditions.
• How it behaves follows the value of the server-controlled switch tengu_peaceful_origami: checks or any for which lines count, with optional custom wording.
• A failed command (one with a non-zero exit code) gets this note only when a separate switch allows it. That switch is now tengu_parallel_sunrise, with a fallback of off. It used to be tengu_tidy_origami, a switch whose purpose was not known before. The same switch also takes part in a second output-handling decision whose details were not traced.

Nothing has been read about tengu_parallel_sunrise. Readings this site took before this release found tengu_peaceful_origami and tengu_tidy_origami off for its own account and for an anonymous one. No reading has been taken under this release.

Why

It saves Claude from re-running a slow build or test just to see output that tail cut off. Because it is controlled from the server, it may not appear for everyone.