Merge pull request elfmz#3394 from michaellukashov/fix-vt-child-bracketed-paste-doubling

fix(vt): suppress key-up events for plain-text chars to prevent doubling chars

Author: elfmz

far2l/src/hmenu.cpp

@@ -172,12 +172,18 @@ int HMenu::ProcessKey(FarKey Key)
 			FrameManager->ProcessKey(KEY_ALTF9);
 			break;
 		case KEY_OP_PLAINTEXT: {
-			const wchar_t *str = eStackAsString();
+			FARString strText;
+			if (!GPastedText.IsEmpty()) {
+				strText = GPastedText;
+				GPastedText.Clear();
+			} else {
+				strText = eStackAsString();
+			}
 
-			if (!*str)
+			if (strText.IsEmpty())
 				return FALSE;
 
-			Key = *str;
+			Key = strText[0];
 			break;
 		}
 		case KEY_NONE:

far2l/src/vt/vtshell.cpp

@@ -900,6 +900,11 @@ class VTShell : VTOutputReader::IProcessor, VTInputReader::IProcessor, IVTShell
 			if (spec)
 				return spec;
 		}
+		// For plain text characters (VK==0) there is no terminal-level key-release
+		// representation. Writing the same raw char on UP would double every character
+		// in bracketed paste and in any mode that forwards key-up events (win32/kitty).
+		if (!KeyEvent.bKeyDown)
+			return std::string();
 
 		wchar_t wz[3] = {KeyEvent.uChar.UnicodeChar, 0};
 		if (_slavename.empty() && wz[0] == '\r') //pipes fallback