bug#35729: [PATCH] OpenVPN password prompts are not recognized by comint.el OpenVPN has a password prompt that is a little different than is handled by comint.el. It looks like this:

[mjbauer95]

  Enter Auth Password:

 As a result, the plain text password is chown when entering in through 
shell-mode. The attached patch adds to ‘comint-password-prompt-regexp’ handling 
for this case.

>From 09adfe3c413ee75aa1f31548907d9d1a7c6b6e6b Mon Sep 17 00:00:00 2001
From: Matthew Bauer <mjbauer95@gmail.com>
Date: Mon, 13 May 2019 18:39:32 -0400
Subject: [PATCH] =?UTF-8?q?Add=20=E2=80=9CEnter=20Auth=E2=80=9D=20prompt?=
 =?UTF-8?q?=20handling=20for=20OpenVPN=20prompts?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

OpenVPN prompts look like:

  Enter Auth Password:

This adds handling for that in comint-password-prompt-regexp.
---
 lisp/comint.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/comint.el b/lisp/comint.el
index d21cc1378f..3dce1c9c8d 100644
--- a/lisp/comint.el
+++ b/lisp/comint.el
@@ -356,7 +356,7 @@ This variable is buffer-local."
    "\\(^ *\\|"
    (regexp-opt
     '("Enter" "enter" "Enter same" "enter same" "Enter the" "enter the"
-      "Old" "old" "New" "new" "'s" "login"
+      "Enter Auth" "Old" "old" "New" "new" "'s" "login"
       "Kerberos" "CVS" "UNIX" " SMB" "LDAP" "PEM" "SUDO"
       "[sudo]" "Repeat" "Bad" "Retype")
     t)
-- 
2.21.0