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From: "SZEDER Gábor" <szeder.dev@gmail.com>
To: Matthieu Moy <git@matthieu-moy.fr>
Cc: Johannes Schindelin <Johannes.Schindelin@gmx.de>,
	Junio C Hamano <gitster@pobox.com>,
	git@vger.kernel.org
Subject: Re: [PATCH v2 3/4] rebase: fix garbled progress display with '-x'
Date: Mon, 17 Jun 2019 21:25:22 +0200	[thread overview]
Message-ID: <20190617192522.GM31952@szeder.dev> (raw)
In-Reply-To: <20190617191328.GL31952@szeder.dev>

[resend to Matthieu's current email address]

On Mon, Jun 17, 2019 at 09:13:28PM +0200, SZEDER Gábor wrote:
> On Fri, Jun 14, 2019 at 08:42:29PM +0200, Johannes Schindelin wrote:
> 
> > The `SHELL` thing here is important, as t/t3404-rebase-interactive.sh sets
> > this to the empty value explicitly:
> > 
> > https://github.com/git/git/blob/v2.22.0/t/t3404-rebase-interactive.sh#L63-L68
> 
> Hmm, hang on for a sec.  Why does it set SHELL to empty?
> 
> So t3404 sets SHELL to the empty value since cd035b1cef
> (rebase -i: add exec command to launch a shell command, 2010-08-10),
> and the in-test comment highlighted on the above link says:
> 
>   # "exec" commands are run with the user shell by default, but this may
>   # be non-POSIX. For example, if SHELL=zsh then ">file" doesn't work
>   # to create a file. Unsetting SHELL avoids such non-portable behavior
>   # in tests. It must be exported for it to take effect where needed.
>   SHELL=
> 
> Furthermore, the corresponding documentation added in cd035b1cef
> says the following:
> 
>   The "exec" command launches the command in a shell (the one specified
>   in `$SHELL`, or the default shell if `$SHELL` is not set)
> 
> IOW if SHELL is not set/empty, then it will run the default '/bin/sh',
> but who knows what it might be, there's no guarantee that it's a sane
> POSIX shell.  That's why we have "Define SHELL_PATH to a POSIX shell
> if your /bin/sh is broken." very near to the top of our Makefile.
> 
> So while setting SHELL to the empty value might indeed avoid
> non-portable behavior when the user in general prefers a non-POSIX
> shell, it wouldn't help if '/bin/sh' is broken.  For that it should be
> set to $SHELL_PATH (or perhaps $TEST_SHELL_PATH nowadays...).
> 
> Though cd035b1cef is now close to 9 years old, plenty of time for
> somebody to run into this issue in the wild and speak up...
> 

  reply	other threads:[~2019-06-17 19:25 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-30 14:25 [PATCH] rebase: fix garbled progress display with '-x' SZEDER Gábor
2019-04-30 22:25 ` Johannes Schindelin
2019-05-01 23:16   ` SZEDER Gábor
2019-05-03  8:41     ` Johannes Schindelin
2019-06-11 12:38     ` SZEDER Gábor
2019-06-11 13:03 ` [PATCH v2 0/4] rebase/progress: add and use term_clear_line() SZEDER Gábor
2019-06-11 13:03   ` [PATCH v2 1/4] t3404-rebase-interactive: use the 'q_to_cr' helper SZEDER Gábor
2019-06-11 13:03   ` [PATCH v2 2/4] pager: add a helper function to clear the last line in the terminal SZEDER Gábor
2019-06-11 13:03   ` [PATCH v2 3/4] rebase: fix garbled progress display with '-x' SZEDER Gábor
2019-06-11 20:36     ` Junio C Hamano
2019-06-11 21:11       ` SZEDER Gábor
2019-06-12 19:14         ` Johannes Schindelin
2019-06-12 19:41           ` SZEDER Gábor
2019-06-13  7:54             ` Johannes Schindelin
2019-06-14 18:42             ` Johannes Schindelin
2019-06-17 18:40               ` SZEDER Gábor
2019-06-17 19:13               ` SZEDER Gábor
2019-06-17 19:25                 ` SZEDER Gábor [this message]
2019-06-24 18:39           ` SZEDER Gábor
2019-06-25 10:08             ` Phillip Wood
2019-06-25 11:31               ` SZEDER Gábor
2019-06-25 13:33                 ` Phillip Wood
2019-06-25 18:00                 ` Phillip Wood
2019-06-25 11:38               ` Johannes Schindelin
2019-06-25 13:35                 ` Phillip Wood
2019-06-11 20:48     ` Junio C Hamano
2019-06-11 23:50       ` SZEDER Gábor
2019-06-12 16:21       ` Junio C Hamano
2019-06-11 13:03   ` [PATCH v2 4/4] progress: use term_clear_line() SZEDER Gábor
2019-06-12 20:00     ` Johannes Schindelin
2019-06-24 18:13   ` [PATCH v3 0/5] rebase/progress: add and " SZEDER Gábor
2019-06-24 18:13     ` [PATCH v3 1/5] t3404: modernize here doc style SZEDER Gábor
2019-06-25  9:06       ` Johannes Schindelin
2019-06-24 18:13     ` [PATCH v3 2/5] t3404: make the 'rebase.missingCommitsCheck=ignore' test more focused SZEDER Gábor
2019-06-25  9:07       ` Johannes Schindelin
2019-06-24 18:13     ` [PATCH v3 3/5] pager: add a helper function to clear the last line in the terminal SZEDER Gábor
2019-06-24 18:13     ` [PATCH v3 4/5] rebase: fix garbled progress display with '-x' SZEDER Gábor
2019-06-27 13:42       ` [PATCH v3.1 " SZEDER Gábor
2019-06-24 18:13     ` [PATCH v3 5/5] progress: use term_clear_line() SZEDER Gábor
2019-06-25  9:10       ` Johannes Schindelin
2019-06-25 19:44         ` Junio C Hamano

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