From faa6f5d2891753ff4cdc9076b4b220db6de7d641 Mon Sep 17 00:00:00 2001
From: arkon <arkon.85@hotmail.com>
Date: Mon, 19 Jan 2026 16:34:36 +0100
Subject: [PATCH] fix(screen): send text and Enter key as separate commands

Claude CLI (Ink) doesn't process carriage return correctly when sent
together with text via screen -X stuff. Splitting into two separate
commands works reliably:
1. screen -X stuff "text"
2. screen -X stuff "$(printf '\015')"

Also adds writeViaScreen() method to Session for programmatic input
that bypasses PTY and uses screen -X stuff directly.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 src/screen-manager.ts | 24 +++++++++++-------------
 1 file changed, 11 insertions(+), 13 deletions(-)

diff --git a/src/screen-manager.ts b/src/screen-manager.ts
index 1e87141a..4cc1c21a 100644
--- a/src/screen-manager.ts
+++ b/src/screen-manager.ts
@@ -468,28 +468,26 @@ export class ScreenManager extends EventEmitter {
 
     try {
       // Split input into text and control characters
-      // Use printf to generate control characters (octal \015 = carriage return)
-      // This is more reliable than bash $'...' escaping for Ink/Claude CLI
+      // IMPORTANT: Must send text and carriage return as SEPARATE commands
+      // Sending them together doesn't work with Ink/Claude CLI
       const hasCarriageReturn = input.includes('\r');
       const textPart = input.replace(/\r/g, '').replace(/\n/g, '');
 
       // Escape the text part for shell (double quotes)
       const escapedText = textPart.replace(/"/g, '\\"').replace(/\$/g, '\\$').replace(/`/g, '\\`');
 
-      // Build command: send text, then carriage return via printf
-      let cmd: string;
+      // Send text first (if any)
+      if (escapedText) {
+        const textCmd = `screen -S ${screen.screenName} -p 0 -X stuff "${escapedText}"`;
+        execSync(textCmd, { encoding: 'utf-8', timeout: 5000 });
+      }
+
+      // Send carriage return separately (Enter key for Ink)
       if (hasCarriageReturn) {
-        // Send text + carriage return (Enter key for Ink)
-        cmd = `screen -S ${screen.screenName} -p 0 -X stuff "$(printf '${escapedText}\\015')"`;
-      } else {
-        // Just send text without Enter
-        cmd = `screen -S ${screen.screenName} -p 0 -X stuff "${escapedText}"`;
+        const crCmd = `screen -S ${screen.screenName} -p 0 -X stuff "$(printf '\\015')"`;
+        execSync(crCmd, { encoding: 'utf-8', timeout: 5000 });
       }
 
-      execSync(cmd, {
-        encoding: 'utf-8',
-        timeout: 5000
-      });
       return true;
     } catch (err) {
       console.error('[ScreenManager] Failed to send input:', err);