From dbeb8d9fb2f8389eb860eb3b287eabfdfeacdfc2 Mon Sep 17 00:00:00 2001
From: prateek <karnalprateek@gmail.com>
Date: Mon, 16 Feb 2026 20:31:07 +0530
Subject: [PATCH] fix: increase delays in spawn prompt submission to ensure
 Enter is processed (#62)

Fixes issue where spawned sessions would send the prompt text but the Enter
keystroke would not be submitted, requiring manual Enter press.

Changes:
- Increase delay after paste-buffer from 300ms to 1000ms in tmux.ts sendKeys()
  to ensure tmux processes the paste before receiving Enter keystroke
- Add 100ms delay after Escape key to ensure it's processed before pasting
- Increase spawn wait time from 1s to 2s before sending initial prompt to
  allow Claude to fully initialize (permission prompts, startup, etc.)

These longer delays account for:
1. tmux paste buffer processing time
2. Claude permission prompt interactions
3. Agent initialization and readiness

Closes: FIX-SPAWN-PROMPT-SUBMIT
---
 packages/cli/src/commands/spawn.ts | 4 +++-
 packages/core/src/tmux.ts          | 8 ++++++--
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/packages/cli/src/commands/spawn.ts b/packages/cli/src/commands/spawn.ts
index 93890fad6..db754d8d5 100644
--- a/packages/cli/src/commands/spawn.ts
+++ b/packages/cli/src/commands/spawn.ts
@@ -221,7 +221,9 @@ async function spawnSession(
     });
 
     if (composedPrompt) {
-      await new Promise((resolve) => setTimeout(resolve, 1000));
+      // Wait for agent to be fully ready (permission prompts, initialization, etc.)
+      // Longer delay ensures Claude is ready to receive input before sending prompt
+      await new Promise((resolve) => setTimeout(resolve, 2000));
       await tmuxSendKeys(sessionName, composedPrompt);
     }
 
diff --git a/packages/core/src/tmux.ts b/packages/core/src/tmux.ts
index 565d1af27..be5da26f5 100644
--- a/packages/core/src/tmux.ts
+++ b/packages/core/src/tmux.ts
@@ -129,6 +129,8 @@ export async function sendKeys(
 ): Promise<void> {
   // Clear any partial input first (matches bash reference scripts)
   await tmux("send-keys", "-t", sessionName, "Escape");
+  // Small delay to ensure Escape is processed before pasting
+  await new Promise((resolve) => setTimeout(resolve, 100));
 
   if (text.includes("\n") || text.length > 200) {
     // Use a named buffer to avoid global paste buffer race conditions
@@ -158,9 +160,11 @@ export async function sendKeys(
   }
 
   if (pressEnter) {
-    // Small delay for paste to complete before sending Enter
+    // Delay for paste to complete before sending Enter
+    // Higher delay needed when using paste-buffer to ensure tmux processes the paste
+    // before receiving the Enter keystroke (especially with Claude permission prompts)
     if (text.includes("\n") || text.length > 200) {
-      await new Promise((resolve) => setTimeout(resolve, 300));
+      await new Promise((resolve) => setTimeout(resolve, 1000));
     }
     await tmux("send-keys", "-t", sessionName, "Enter");
   }