Windows: Make OpenSSH properly detect tty detachment.

Apparently, CREATE_NO_WINDOW makes the OS tell the process
that it has a console, but without actually creating the
window. As a result, when git is started from GUI, ssh
tries to ask its questions on the invisible console.

This patch uses DETACHED_PROCESS instead, which clearly
means that the process should be left without a console.
The downside is that if the process manually calls
AllocConsole, the window will appear. A similar thing
might occur if it calls another console executable.

Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com>
Acked-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/compat/mingw.c b/compat/mingw.c
index 09858f6c593d9a8301c857c81e09bfa24b955eac..b534a8a4725617a3711c1ac4e2cc1883814b4684 100644 (file)
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -536,12 +536,16 @@ static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env,
                 * would normally create a console window. But
                 * since we'll be redirecting std streams, we do
                 * not need the console.
+                * It is necessary to use DETACHED_PROCESS
+                * instead of CREATE_NO_WINDOW to make ssh
+                * recognize that it has no console.
                 */
-               flags = CREATE_NO_WINDOW;
+               flags = DETACHED_PROCESS;
        } else {
                /* There is already a console. If we specified
-                * CREATE_NO_WINDOW here, too, Windows would
+                * DETACHED_PROCESS here, too, Windows would
                 * disassociate the child from the console.
+                * The same is true for CREATE_NO_WINDOW.
                 * Go figure!
                 */
                flags = 0;