From ce83228cb21e6839c105b55d71c50cab671e4ed6 Mon Sep 17 00:00:00 2001
From: albertony <12441419+albertony@users.noreply.github.com>
Date: Tue, 11 May 2021 19:58:26 +0200
Subject: [PATCH] sftp: expand tilde and environment variables in configured
 known_hosts_file (#5322)

Fixes #5220
---
 backend/sftp/sftp.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backend/sftp/sftp.go b/backend/sftp/sftp.go
index e9f5a490a..ea003cda5 100644
--- a/backend/sftp/sftp.go
+++ b/backend/sftp/sftp.go
@@ -566,7 +566,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	}
 
 	if opt.KnownHostsFile != "" {
-		hostcallback, err := knownhosts.New(opt.KnownHostsFile)
+		hostcallback, err := knownhosts.New(env.ShellExpand(opt.KnownHostsFile))
 		if err != nil {
 			return nil, errors.Wrap(err, "couldn't parse known_hosts_file")
 		}