From 278dcf41f8d1cb2db43910b6dfafad32dec19e69 Mon Sep 17 00:00:00 2001
From: jlu005807 <1289406660@qq.com>
Date: Thu, 28 May 2026 11:57:50 +0800
Subject: [PATCH] fix(tui-v3): detect Shift+Enter on Windows via
 GetAsyncKeyState
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Windows terminals don't send unique escape sequences for Shift+Enter
(both Enter and Shift+Enter arrive as \r), so prompt_toolkit can't
distinguish them from the key name alone.

Detect the physical Shift key via Win32 GetAsyncKeyState(0x10) —
hardware-level, no terminal dependency.
---
 frontends/tui_v3.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/frontends/tui_v3.py b/frontends/tui_v3.py
index d63e2abe..64be2ad8 100644
--- a/frontends/tui_v3.py
+++ b/frontends/tui_v3.py
@@ -807,7 +807,12 @@ def has(*needles: str) -> bool:
         return any(n in a for a in aliases for n in needles)
 
     # Enter submits; Ctrl+J / Shift+Enter insert newline when PTK can distinguish.
+    # Windows terminals send \r for both Enter/Shift+Enter — detect Shift physically.
     if has('controlm', 'c-m') or key_s in ('\r', '\n'):
+        if _IS_WINDOWS:
+            import ctypes
+            if ctypes.windll.user32.GetAsyncKeyState(0x10) & 0x8000:
+                return b'\n'
         return b'\r'
     if has('controlj', 'c-j', 's-enter', 'shift-enter'):
         return b'\n'