From b0ce29dcfd888a70fe1c8dfdb821285a8148591b Mon Sep 17 00:00:00 2001
From: Alex Willmer <alex@moreati.org.uk>
Date: Sun, 8 Nov 2020 20:28:59 +0000
Subject: [PATCH] ssh: Match newer ssh host key prompt that accepts the
 fingerprint

This fixes an ERROR in test_accept_enforce_host_keys() while running the
test suite.

Fixes #756
---
 docs/changelog.rst | 3 ++-
 mitogen/ssh.py     | 5 ++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/docs/changelog.rst b/docs/changelog.rst
index 8707871b..50e58d31 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -21,7 +21,8 @@ v0.2.10 (unreleased)
 To avail of fixes in an unreleased version, please download a ZIP file
 `directly from GitHub <https://github.com/dw/mitogen/>`_.
 
-*(no changes)*
+* :gh:issue:`756` ssh connections with `check_host_keys='accept'` would
+  timeout, when using recent OpenSSH client versions.
 
 
 v0.2.9 (2019-11-02)
diff --git a/mitogen/ssh.py b/mitogen/ssh.py
index 7a494ed3..656dc72c 100644
--- a/mitogen/ssh.py
+++ b/mitogen/ssh.py
@@ -72,7 +72,10 @@ PASSWORD_PROMPT_PATTERN = re.compile(
 )
 
 HOSTKEY_REQ_PATTERN = re.compile(
-    b(r'are you sure you want to continue connecting \(yes/no\)\?'),
+    b(
+            r'are you sure you want to continue connecting '
+            r'\(yes/no(?:/\[fingerprint\])?\)\?'
+    ),
     re.I
 )