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Brennan Benson
a6e54fc4a9
seedNativeChatLaunchDraftForAgentTab rejected any text containing a newline,
so every Linear launch ("Linked Linear issue: X\n<url>") and any GitHub launch
with a typed note was invisible in chat. The rejection existed because the send
path pre-cleared the TUI with a single Ctrl+U, which cannot clear a buffer with
embedded newlines.
Orca injects the draft itself, so when the composer still holds exactly what was
injected the buffer already IS the message: the send becomes the submit key
alone — no clear, no paste, nothing that can concatenate, and multi-line submits
as one turn for free. Only the edited case needs real buffer replacement, and
that now clears every line and verifies against the agent's rendered input line
instead of firing blind.
Measured on real PTYs against Claude Code and codex (both agree exactly):
clearing N logical lines costs 2N-1 Ctrl+U. See src/shared/agent-tui-input-clear.ts
for the law, the sequences that do NOT work, and why an upper bound is safe.