Auto-compact writes `/compact <prompt>\r` through writeViaMux when the token
count crosses the threshold, unattended. AutoCompactSchema.prompt accepts line
breaks, so a prompt set through the API can hold several lines. The mux used to
strip them and run the lines together; it now pastes multi-line text as one
block, and the check that re-presses a stranded Enter cannot recognise that
paste in the composer. That is the case respawn's update and kickstart prompts
were already joined for.
The join moves out of respawn-controller into a shared toSingleLine()
(src/utils/single-line.ts), used by both respawn steps and by auto-compact.
Behaviour for respawn is unchanged. The respawn test file becomes
test/unattended-single-line-prompt.test.ts and gains an auto-compact block that
feeds a real Session a token count over its threshold and reads what reaches
writeViaMux.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The update and kickstart prompts are textareas in the respawn settings and
the schema accepts line breaks, so a saved config can hold several lines.
Both steps went out through writeViaMux, which used to strip every `\n` and
run the lines together. Since the mux now pastes multi-line text as one
block, a multi-line respawn prompt would have gone out as a multi-line paste,
and the check that re-presses a stranded Enter cannot recognise that paste in
the composer. Respawn runs unattended, the same situation for which cron
keeps rejecting multi-line prompts.
singleLineRespawnPrompt() joins the lines with a space before the write; a
single-line prompt is passed through unchanged. Respawn joins rather than
rejects, so a multi-line config that was accepted before is still sent.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
TmuxManager.sendInput() removed every `\n` before the text reached tmux, so a
multi-line prompt sent with `useMux` (or a multi-line respawn prompt) arrived as
one line with its lines run together: `"echo A\necho B\r"` ran `echo Aecho B`.
The text half of a submit has gone in as one bracketed paste
(buildPasteTextCommands) since the Codex paste-burst fix, and inside the paste
markers Claude Code and Codex insert a pasted line break into the composer
instead of submitting. So the `\n` is now kept (`\r\n` loses only its `\r`) and
the existing paste carries the lines; the Enter stays a separate tmux call.
Multi-line text without an Enter is pasted too rather than typed with
`send-keys -l`, where every line break would reach the pane as a key.
Single-line input is unchanged.
The test-mode gate moves from the top of sendInput() into inputRunner(), as
readPaneRows() does, so a test subclass can record the commands sendInput()
would run instead of pinning the branch shapes on the source.
SubmitVerifier still compares the composer's last glyph line with the prompt
minus its newlines, so it does not reliably recognise a multi-line paste and
may not re-press an Enter that Claude Code ignored. `agent send` and the TUI
therefore keep refusing or joining multi-line input; the docs that described
the stripping now describe the paste and that limit.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
