From 28ff3b95d0c66d10fcf6bf50a484a902244afdb0 Mon Sep 17 00:00:00 2001
From: Takashi Yano via Cygwin-patches <cygwin-patches@cygwin.com>
Date: Mon, 14 Dec 2020 17:26:47 +0900
Subject: [PATCH] Cygwin: pty: Add a workaround for rlwrap.

- If rlwrap is used with non-cygwin apps, it fails to setup pseudo
  console. This patch adds a workaround for this issue.
---
 winsup/cygwin/fhandler_tty.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
index 1c1811362..6ce05ae2a 100644
--- a/winsup/cygwin/fhandler_tty.cc
+++ b/winsup/cygwin/fhandler_tty.cc
@@ -1218,6 +1218,11 @@ fhandler_pty_slave::tcgetattr (struct termios *t)
 {
   reset_switch_to_pcon ();
   *t = get_ttyp ()->ti;
+  /* Workaround for rlwrap */
+  if (get_ttyp ()->pcon_start)
+    t->c_lflag &= ~ICANON;
+  else if (get_ttyp ()->h_pseudo_console)
+    t->c_iflag &= ~ICRNL;
   return 0;
 }