015. A dead pane reports no directory

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Date: 2026-09-03
Agents: none named
Measured on: not recorded

Measured

2026-09-03, tmux 3.5a, with an isolated socket.

What was measured

A pane that remain-on-exit holds gives 1 for #{pane_dead} and an empty string for #{pane_current_path}. respawn-pane -c . starts the new process in the working directory of the tmux CLIENT. The probe started the server in directory A and ran the client from directory B. The pane started in directory B.

Mechanism

In many languages an empty path becomes .. A tool that restarts a dead pane must keep the directory that the live pane reported, or use a known project path. It must refuse the restart when it has neither.

Incident

A restart sent -c .. The agent started in /, the default directory of the service. --continue found no conversation there, the pane died again, and the report named the conversation as the cause.

Screens

None.

Not measured

Other tmux versions.

Source

Measured by the tg-bridge project. The text is a summary of its notes, and it holds no host details and no session details.