From: Leo Famulari <leo@famulari.name>
To: Hartmut Goebel <h.goebel@crazy-compilers.com>
Cc: guix-devel <guix-devel@gnu.org>
Subject: Re: pre-push signature hook error reporting [was Re: [PATCH v6] gnu: python-sphinx: Update to 1.4.8.]
Date: Tue, 17 Jan 2017 14:44:25 -0500 [thread overview]
Message-ID: <20170117194425.GA7178@jasmine> (raw)
In-Reply-To: <587E147D.2000203@crazy-compilers.com>
On Tue, Jan 17, 2017 at 01:56:29PM +0100, Hartmut Goebel wrote:
> Am 17.01.2017 um 12:34 schrieb Danny Milosavljevic:
> > For minimal improvement (I don't even think it's measureable), try
> > `git rev-list HEAD` (backquotes) - it prevents having to spawn a
> > subshell.
>
> Huh? I doubt this. The bash manual, section "Command Substitution" does
> not distinguish between these both, as far as I understand it.
The POSIX shell command language specification says that:
"The shell shall expand the command substitution by executing command in
a subshell environment (see Shell Execution Environment) and replacing
the command substitution (the text of command plus the enclosing "$()"
or backquotes) with the standard output of the command, removing
sequences of one or more <newline>s at the end of the substitution."
http://pubs.opengroup.org/onlinepubs/007904875/utilities/xcu_chap02.html#tag_02_06_03
Maybe it's faster, maybe not, but I think my benchmark was
misinterpreted...
next prev parent reply other threads:[~2017-01-17 19:44 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-05 16:14 [PATCH v6] gnu: python-sphinx: Update to 1.4.8 Danny Milosavljevic
2017-01-05 16:40 ` Marius Bakke
[not found] ` <8760lj5eb6.fsf@kirby.i-did-not-set--mail-host-address--so-tickle-me>
[not found] ` <20170113152400.GA24322@jasmine>
2017-01-17 3:14 ` pre-push signature hook error reporting [was Re: [PATCH v6] gnu: python-sphinx: Update to 1.4.8.] Leo Famulari
2017-01-17 11:34 ` Danny Milosavljevic
2017-01-17 12:56 ` Hartmut Goebel
2017-01-17 19:44 ` Leo Famulari [this message]
2017-01-17 19:38 ` Leo Famulari
2017-01-17 14:55 ` Hartmut Goebel
2017-01-17 19:39 ` Leo Famulari
2017-01-20 14:05 ` Ludovic Courtès
2017-01-21 1:39 ` Leo Famulari
2017-02-06 15:39 ` pre-push signature hook error reporting Leo Famulari
2017-02-06 16:37 ` Marius Bakke
2017-02-07 13:15 ` Ludovic Courtès
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://guix.gnu.org/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170117194425.GA7178@jasmine \
--to=leo@famulari.name \
--cc=guix-devel@gnu.org \
--cc=h.goebel@crazy-compilers.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/guix.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).