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docs: add Screen Input for Ink/Claude CLI pattern

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Document the critical finding that text and Enter key must be sent
as separate screen -X stuff commands for Ink to process correctly.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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arkon
2026-01-19 16:35:20 +01:00
co-authored by Claude Opus 4.5
parent faa6f5d289
commit 448e975dc1
1 changed files with 16 additions and 0 deletions
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CLAUDE.md
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@@ -125,6 +125,22 @@ pty.spawn('claude', ['-p', '--dangerously-skip-permissions', '--output-format',
pty.spawn('claude', ['--dangerously-skip-permissions'], { ... })
```
### Screen Input for Ink/Claude CLI
Claude CLI uses Ink (React for terminals) which has specific input handling. When sending programmatic input via `screen -X stuff`:
**IMPORTANT**: Text and Enter key MUST be sent as separate commands:
```bash
# Correct - two separate commands
screen -S claudeman-xxx -p 0 -X stuff "hello world"
screen -S claudeman-xxx -p 0 -X stuff "$(printf '\015')"
# Wrong - doesn't work with Ink
screen -S claudeman-xxx -p 0 -X stuff "$(printf 'hello world\015')"
```
The `\015` (octal) is carriage return (ASCII 13), which Ink interprets as `key.return` for submission. Use `writeViaScreen()` method for programmatic input that needs Enter key.
### Idle Detection
**RespawnController**: Primary `↵ send` indicator, fallback prompt chars (`❯`, `⏵`) + 10s timeout. Working patterns: `Thinking`, `Writing`, `Running`.