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fix(tui): exit on empty non-interactive stdin - #42235

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anomalyco:devfrom
xichen1997:tui-eof-exit
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fix(tui): exit on empty non-interactive stdin#42235
xichen1997 wants to merge 1 commit into
anomalyco:devfrom
xichen1997:tui-eof-exit

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@xichen1997

@xichen1997 xichen1997 commented Aug 13, 2026 •
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Issue for this PR

Closes #42234

Type of change

  • Bug fix
  • New feature
  • Refactor / code improvement
  • Documentation

What does this PR do?

Exits before starting the TUI when stdin is non-interactive, reaches EOF, and no prompt was provided. This prevents OpenCode from holding an active exec session indefinitely and blocking auto-sleep.

Docker reproduction:

docker run -d --name opencode-eof node:22-bookworm-slim sleep infinity
docker exec opencode-eof npm install -g opencode-ai@1.18.18
timeout -s KILL 8s docker exec opencode-eof opencode </dev/null
docker top opencode-eof -eo pid,ppid,tty,stat,etime,args

How did you verify your code works?

  • Added a real CLI subprocess regression test with ignored stdin.
  • Ran the targeted TUI tests and repository typecheck.

Screenshots / recordings

Not applicable.

Checklist

  • I have tested my changes locally
  • I have not included unrelated changes in this PR

@github-actions github-actions Bot added the needs:compliance This means the issue will auto-close after 2 hours. label Aug 13, 2026
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github-actions Bot commented Aug 13, 2026

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The following comment was made by an LLM, it may be inaccurate:

Related PRs found:

  1. fix(tui): isolate tool stdin #41613 - fix(tui): isolate tool stdin

    • Related to stdin handling in the TUI; may address similar concerns about stdin interaction with tools

  2. fix(tui): prevent piped stdin from breaking UI and keyboard input #34242 - fix(tui): prevent piped stdin from breaking UI and keyboard input

    • Directly related to preventing piped/non-interactive stdin from disrupting the TUI

These PRs appear to address related stdin management issues, though #42235 specifically targets the EOF+non-interactive stdin case to prevent indefinite session hangs and enable auto-sleep. The other PRs focus on broader stdin isolation and UI protection.

@github-actions github-actions Bot removed the needs:compliance This means the issue will auto-close after 2 hours. label Aug 13, 2026
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github-actions Bot commented Aug 13, 2026

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Thanks for updating your PR! It now meets our contributing guidelines. 👍

@xichen1997
xichen1997 marked this pull request as ready for review August 13, 2026 04:34
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TUI stays alive with EOF stdin and no TTY

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@xichen1997