================
@@ -993,6 +996,20 @@ class IOHandlerProcessSTDIOWindows : public IOHandler {
       case WAIT_FAILED:
         goto exit_loop;
       case WAIT_OBJECT_0: {
+        if (isConsole) {
+          INPUT_RECORD inputRecord;
+          DWORD numRead = 0;
+          if (!PeekConsoleInput(hStdin, &inputRecord, 1, &numRead) ||
+              numRead == 0)
+            goto exit_loop;
+          // We only care about text input. Ignore all non text input events 
and
+          // let other IOHandlers handle them.
+          if (inputRecord.EventType != KEY_EVENT ||
+              !inputRecord.Event.KeyEvent.bKeyDown ||
+              inputRecord.Event.KeyEvent.uChar.AsciiChar == 0)
+            break;
----------------
Nerixyz wrote:

When we discard these events, we never take them out of the queue, so 
`WaitForMultipleObjects` will still return immediately. We probably need to 
[`ReadConsoleInput`](https://learn.microsoft.com/en-us/windows/console/readconsoleinput)
 here.

https://github.com/llvm/llvm-project/pull/175812
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