From 1021cd1238662e060be7a7dad6e2282e434bc89b Mon Sep 17 00:00:00 2001
From: Mateusz Kwapich <mitrandir@fb.com>
Date: Fri, 30 Oct 2020 13:09:24 -0700
Subject: [PATCH] py3: fix hanging read of SSH subprocesses
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Summary:
Previously, reading from SSH subprocesses did’t return on Python 3.  bufsize=0
is default on Python 2, but not Python 3.

This is a backport of: https://foss.heptapod.net/mercurial/hg-git/-/commit/0fc8020ebea6d184601d138fa614eb9706a1540e

Reviewed By: krallin

Differential Revision: D24652418

fbshipit-source-id: 1140c76b6f711bfe1726108bd4fe6948e6ee41a0
---
 eden/scm/edenscm/hgext/hggit/_ssh.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/eden/scm/edenscm/hgext/hggit/_ssh.py b/eden/scm/edenscm/hgext/hggit/_ssh.py
index d25e357087..c20c45c2ee 100644
--- a/eden/scm/edenscm/hgext/hggit/_ssh.py
+++ b/eden/scm/edenscm/hgext/hggit/_ssh.py
@@ -30,6 +30,7 @@ def generate_ssh_vendor(ui):
             ui.debug("calling ssh: %s\n" % cmd)
             proc = subprocess.Popen(
                 util.quotecommand(cmd),
+                bufsize=0,
                 shell=True,
                 stdin=subprocess.PIPE,
                 stdout=subprocess.PIPE,