From: Jeff King <peff@peff.net>
To: Yoichi Nakayama <yoichi.nakayama@gmail.com>
Cc: Yoichi Nakayama via GitGitGadget <gitgitgadget@gmail.com>,
git@vger.kernel.org
Subject: Re: [PATCH v4 2/2] git-jump: invoke emacs/emacsclient
Date: Thu, 24 Nov 2022 11:31:54 -0500 [thread overview]
Message-ID: <Y3+cepfUpi0vm7yM@coredump.intra.peff.net> (raw)
In-Reply-To: <CAF5D8-vXK81U_n06u=p=B9urTWyQ5+fN8_w9FeCWQOv1xen07Q@mail.gmail.com>
On Thu, Nov 24, 2022 at 09:58:04PM +0900, Yoichi Nakayama wrote:
> > The original vim version used the notation \$1 instead of $1.
> > I'm worried that the emacs version might need the backslash.
> > What does the backslash mean? Is it necessary?
>
> I found the answer myself. The backslash is to leave the
> evaluation of the argument to the 'eval' execution.
> And another question arose. Why do we use eval?
> What is the difference from running it directly like below?
> $editor -q $1
The value of $editor is not a single program name, but is itself a shell
command. So you could imagine:
git config core.editor "some_command --with --args"
or even more complicated shell hackery. From within Git, we'd run it as:
sh -c "some_command --with --args"
but when you are in a shell already, "eval" is a more efficient way of
doing the same.
-Peff
next prev parent reply other threads:[~2022-11-24 16:32 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-19 14:02 [PATCH 0/2] git-jump: support Emacs Yoichi NAKAYAMA via GitGitGadget
2022-11-19 14:02 ` [PATCH 1/2] git-jump: add an optional argument 'stdout' Yoichi Nakayama via GitGitGadget
2022-11-19 14:02 ` [PATCH 2/2] git-jump: invoke emacsclient Yoichi Nakayama via GitGitGadget
2022-11-19 15:53 ` Eric Sunshine
2022-11-19 23:44 ` Yoichi Nakayama
2022-11-19 23:59 ` Eric Sunshine
2022-11-21 4:05 ` Yoichi Nakayama
2022-11-20 1:27 ` [PATCH v2 0/2] git-jump: support Emacs Yoichi NAKAYAMA via GitGitGadget
2022-11-20 1:27 ` [PATCH v2 1/2] git-jump: add an optional argument 'stdout' Yoichi Nakayama via GitGitGadget
2022-11-21 5:43 ` Junio C Hamano
2022-11-21 11:25 ` Yoichi Nakayama
2022-11-21 18:18 ` Jeff King
2022-11-20 1:27 ` [PATCH v2 2/2] git-jump: invoke emacsclient Yoichi Nakayama via GitGitGadget
2022-11-21 12:26 ` [PATCH v3 0/2] git-jump: support Emacs Yoichi NAKAYAMA via GitGitGadget
2022-11-21 12:26 ` [PATCH v3 1/2] git-jump: add an optional argument '--stdout' Yoichi Nakayama via GitGitGadget
2022-11-21 18:38 ` Jeff King
2022-11-21 23:38 ` Junio C Hamano
2022-11-22 13:00 ` Yoichi Nakayama
2022-11-22 18:23 ` Jeff King
2022-11-22 13:29 ` Yoichi Nakayama
2022-11-21 12:27 ` [PATCH v3 2/2] git-jump: invoke emacs/emacsclient Yoichi Nakayama via GitGitGadget
2022-11-21 18:50 ` Jeff King
2022-11-22 12:06 ` Yoichi Nakayama
2022-11-22 14:18 ` [PATCH v4 0/2] git-jump: support Emacs Yoichi NAKAYAMA via GitGitGadget
2022-11-22 14:18 ` [PATCH v4 1/2] git-jump: add an optional argument '--stdout' Yoichi Nakayama via GitGitGadget
2022-11-22 18:30 ` Jeff King
2022-11-22 14:18 ` [PATCH v4 2/2] git-jump: invoke emacs/emacsclient Yoichi Nakayama via GitGitGadget
2022-11-22 16:40 ` Phillip Wood
2022-11-23 5:01 ` Yoichi Nakayama
2022-11-22 18:54 ` Jeff King
2022-11-23 5:33 ` Yoichi Nakayama
2022-11-24 1:09 ` Jeff King
2022-11-24 12:32 ` Yoichi Nakayama
2022-11-24 12:58 ` Yoichi Nakayama
2022-11-24 16:31 ` Jeff King [this message]
2022-11-24 16:29 ` Jeff King
2022-11-25 3:46 ` Yoichi Nakayama
2022-11-23 7:04 ` [PATCH v5 0/3] git-jump: support Emacs Yoichi NAKAYAMA via GitGitGadget
2022-11-23 7:04 ` [PATCH v5 1/3] git-jump: add an optional argument '--stdout' Yoichi Nakayama via GitGitGadget
2022-11-23 7:04 ` [PATCH v5 2/3] git-jump: move valid-mode check earlier Jeff King via GitGitGadget
2022-11-23 7:04 ` [PATCH v5 3/3] git-jump: invoke emacs/emacsclient Yoichi Nakayama via GitGitGadget
2022-11-23 14:58 ` Phillip Wood
2022-11-23 21:54 ` Yoichi Nakayama
2022-11-24 1:11 ` [PATCH v5 0/3] git-jump: support Emacs Jeff King
2022-11-24 3:47 ` [PATCH v6 " Yoichi NAKAYAMA via GitGitGadget
2022-11-24 3:47 ` [PATCH v6 1/3] git-jump: add an optional argument '--stdout' Yoichi Nakayama via GitGitGadget
2022-11-24 3:47 ` [PATCH v6 2/3] git-jump: move valid-mode check earlier Jeff King via GitGitGadget
2022-11-24 3:47 ` [PATCH v6 3/3] git-jump: invoke emacs/emacsclient Yoichi Nakayama via GitGitGadget
2022-11-25 3:36 ` [PATCH v7 0/3] git-jump: support Emacs Yoichi NAKAYAMA via GitGitGadget
2022-11-25 3:36 ` [PATCH v7 1/3] git-jump: add an optional argument '--stdout' Yoichi Nakayama via GitGitGadget
2022-11-25 9:06 ` Ævar Arnfjörð Bjarmason
2022-11-27 0:31 ` Yoichi Nakayama
2022-11-25 3:37 ` [PATCH v7 2/3] git-jump: move valid-mode check earlier Jeff King via GitGitGadget
2022-11-25 3:37 ` [PATCH v7 3/3] git-jump: invoke emacs/emacsclient Yoichi Nakayama via GitGitGadget
2022-11-25 8:55 ` Ævar Arnfjörð Bjarmason
2022-11-25 16:01 ` Yoichi Nakayama
2022-11-25 23:52 ` Ævar Arnfjörð Bjarmason
2022-11-28 5:10 ` Jeff King
2022-11-28 10:54 ` Ævar Arnfjörð Bjarmason
2022-11-28 15:38 ` Yoichi Nakayama
2022-11-27 0:37 ` Yoichi Nakayama
2022-11-27 1:18 ` [PATCH v8 0/3] git-jump: support Emacs Yoichi NAKAYAMA via GitGitGadget
2022-11-27 1:18 ` [PATCH v8 1/3] git-jump: add an optional argument '--stdout' Yoichi Nakayama via GitGitGadget
2022-11-27 1:18 ` [PATCH v8 2/3] git-jump: move valid-mode check earlier Jeff King via GitGitGadget
2022-11-27 1:18 ` [PATCH v8 3/3] git-jump: invoke emacs/emacsclient Yoichi Nakayama via GitGitGadget
2022-11-28 10:13 ` [PATCH v8 0/3] git-jump: support Emacs Phillip Wood
2022-11-28 23:35 ` Junio C Hamano
2022-11-29 21:05 ` Yoichi Nakayama
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