From: Junio C Hamano <gitster@pobox.com>
To: "Carlo Marcelo Arenas Belón" <carenas@gmail.com>
Cc: git@vger.kernel.org, phillip.wood123@gmail.com,
thomas.wolf@paranor.ch, Alexander Veit <alexander.veit@gmx.net>
Subject: Re: [PATCH] editor: only save (and restore) the terminal if using a tty
Date: Mon, 22 Nov 2021 15:03:32 -0800 [thread overview]
Message-ID: <xmqqa6hvbxob.fsf@gitster.g> (raw)
In-Reply-To: <20211122222850.674-1-carenas@gmail.com> ("Carlo Marcelo Arenas Belón"'s message of "Mon, 22 Nov 2021 14:28:50 -0800")
Carlo Marcelo Arenas Belón <carenas@gmail.com> writes:
> If the editor is invoked without a controlling terminal, then
> saving the state and restoring it later is not very useful and
> could generate signals that the invoking process wouldn't know
> how to handle.
>
> if git's standard output is not connected to a terminal, then
> presume there is no need to worry if the invoking terminal could
> garble it.
Shouldn't the logic apply equally to all callers of save_term()?
In other words, why aren't we doing this check inside save_term()
implementation? i.e. before opening /dev/tty, we can do isatty(1)
and return -1 if it is false, or something? That way, when we gain
the second caller to save/restore other than editor (prehaps the
pager code path wants to do this? I dunno), we do not have to
remember that isatty() check must be made before doing save_term(),
no?
In any case, I am quite tempted to just revert the offending topic
for now, but later accept a resurrection patch with this isatty
check rolled in (either at this caller, or inside save_term) when
the dust settles.
Thanks.
> Reported-by: Alexander Veit <alexander.veit@gmx.net>
> Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
> ---
> editor.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/editor.c b/editor.c
> index 674309eed8..214e3834cb 100644
> --- a/editor.c
> +++ b/editor.c
> @@ -86,7 +86,7 @@ static int launch_specified_editor(const char *editor, const char *path,
> p.env = env;
> p.use_shell = 1;
> p.trace2_child_class = "editor";
> - term_fail = save_term(1);
> + term_fail = isatty(1) ? save_term(1) : 1;
> if (start_command(&p) < 0) {
> if (!term_fail)
> restore_term();
next prev parent reply other threads:[~2021-11-22 23:03 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-22 8:42 Update to Git 2.34.0 breaks application Alexander Veit
2021-11-22 21:43 ` Phillip Wood
2021-11-22 22:28 ` [PATCH] editor: only save (and restore) the terminal if using a tty Carlo Marcelo Arenas Belón
2021-11-22 22:47 ` Junio C Hamano
2021-11-22 23:03 ` Junio C Hamano [this message]
2021-11-22 23:08 ` Junio C Hamano
2021-11-23 8:52 ` Alexander Veit
2021-11-23 9:08 ` Carlo Arenas
2021-11-22 23:39 ` Carlo Arenas
2021-11-23 17:35 ` Junio C Hamano
2021-11-24 13:29 ` Johannes Schindelin
2021-11-24 18:25 ` Carlo Arenas
2021-11-24 19:34 ` Junio C Hamano
2021-11-24 20:04 ` Carlo Arenas
2021-11-24 20:51 ` Junio C Hamano
2021-11-29 21:12 ` Johannes Schindelin
2021-11-23 11:05 ` Phillip Wood
2021-11-23 17:27 ` Junio C Hamano
2021-11-23 17:31 ` Carlo Arenas
2021-11-30 11:07 ` Phillip Wood
2021-12-01 5:12 ` Chris Torek
2021-12-01 19:33 ` Junio C Hamano
2021-12-02 0:38 ` Junio C Hamano
2021-12-02 1:51 ` Carlo Arenas
2021-12-02 14:48 ` Johannes Schindelin
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