upstream: Allow ssh_config IdentityAgent directive to accept

environment variable names as well as explicit paths. ok dtucker@

OpenBSD-Commit-ID: 2f0996e103876c53d8c9dd51dcce9889d700767b

1 files changed, 6 insertions, 2 deletions

diff --git a/ssh_config.5 b/ssh_config.5
index 27136dbd6..4d5b01d3e 100644
--- a/ssh_config.5
+++ b/ssh_config.5
@@ -33,8 +33,8 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.\" $OpenBSD: ssh_config.5,v 1.285 2018/09/21 12:46:22 djm Exp $
-.Dd $Mdocdate: September 21 2018 $
+.\" $OpenBSD: ssh_config.5,v 1.286 2018/10/03 06:38:35 djm Exp $
+.Dd $Mdocdate: October 3 2018 $
 .Dt SSH_CONFIG 5
 .Os
 .Sh NAME
@@ -877,6 +877,10 @@ If the string
 is specified, the location of the socket will be read from the
 .Ev SSH_AUTH_SOCK
 environment variable.
+Otherwise if the specified value begins with a
+.Sq $
+character, then it will be treated as an environment variable containing
+the location of the socket.
 .Pp
 Arguments to
 .Cm IdentityAgent