mailarchive of the ptxdist mailing list
 help / color / mirror / Atom feed
From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Alexander Stein <alexander.stein@systec-electronic.com>
Cc: Michael Olbrich <m.olbrich@pengutronix.de>, ptxdist@pengutronix.de
Subject: Re: [ptxdist] git ptx-patches fails
Date: Tue, 1 Apr 2014 11:37:30 +0200	[thread overview]
Message-ID: <20140401093730.GB29751@pengutronix.de> (raw)
In-Reply-To: <5154092.4WVLzE0vXN@ws-stein>

Hello Alexander,

On Tue, Apr 01, 2014 at 11:24:52AM +0200, Alexander Stein wrote:
> On Tuesday 01 April 2014 10:24:41, Uwe Kleine-König wrote:
> > On Mon, Mar 31, 2014 at 07:08:53PM +0200, Alexander Stein wrote:
> > > On Saturday 29 March 2014, 10:28:54 wrote Michael Olbrich:
> > > > On Thu, Mar 27, 2014 at 08:16:15AM +0100, Alexander Stein wrote:
> > > > > I tried to use git ptx-patches fromwithin a package and noticed it doesn't work.
> > > > > I could track down the problem to this command (from scripts/git-ptx-patches):
> > > > > > man git-format-patch | grep -q -e --notes
> > > > > 
> > > > > Executing this command manually results in this error message:
> > > > > > Error executing formatting or display command.
> > > > > > System command (cd "/usr/share/man" && (echo ".pl 11i"; /bin/bzip2 -c -d '/usr/share/man/man1/git-format-patch.1.bz2') | /usr/bin/gtbl | /usr/bin/nroff -mandoc | less) exited with status 141.
> > > > > > No manual entry for git-format-patch
> > > > > 
> > > > > Interestingly executing
> > > > > > (cd "/usr/share/man" && (echo ".pl 11i"; /bin/bzip2 -c -d '/usr/share/man/man1/git-format-patch.1.bz2') | /usr/bin/gtbl | /usr/bin/nroff -mandoc | less) | grep -q -e --notes
> > > > > works as expected. I have no idea what's wrong here.
> > > > 
> > > > Maybe this is caused by some aliases or interactive/non-ineractive magic.
> > > > Does it help to replace "man git-format-patch" with "git format-patch
> > > > --help" or "man -P cat git-format-patch"?
> > > 
> > > Unfortunately no :(
> > > 
> > > git format-patch --help | grep -q -e --notes
> > > Error executing formatting or display command.
> > > System command (cd "/usr/share/man" && (echo ".pl 11i"; /bin/bzip2 -c -d '/usr/share/man/man1/git-format-patch.1.bz2') | /usr/bin/gtbl | /usr/bin/nroff -mandoc | /usr/bin/less) exited with status 141.
> > > No manual entry for git-format-patch
> > > 
> > > $ man -P cat git-format-patch | grep -q -e --notes
> > > Error executing formatting or display command.
> > > System command (cd "/usr/share/man" && (echo ".pl 11i"; /bin/bzip2 -c -d '/usr/share/man/man1/git-format-patch.1.bz2') | /usr/bin/gtbl | /usr/bin/nroff -mandoc | cat) exited with status 141.
> > > No manual entry for git-format-patch
> > Do you have git-format-patch's manpage, i.e. does
> > 
> > 	man git-format-patch
> > 
> > work?
> 
> Yep, that man page is installed.
> 
> > On bash, what happens on:
> > 
> > 	$ man -P cat git-format-patch | grep -q -e --notes
> > 	$ echo ${PIPESTATUS[@]}
> 
> $ man -P cat git-format-patch | grep -q -e --notes
> Error executing formatting or display command.
> System command (cd "/usr/share/man" && (echo ".pl 11i"; /bin/bzip2 -c -d '/usr/share/man/man1/git-format-patch.1.bz2') | /usr/bin/gtbl | /usr/bin/nroff -mandoc | cat) exited with status 141.
> No manual entry for git-format-patch
> $ echo ${PIPESTATUS[@]}
> 1 0
> 
> > Does
> > 
> > 	strace -f -o /tmp/lala man -P cat git-format-patch | grep -q -e --notes
> > 
> > give any insights (e.g. where does the 141 come from?)
> 
> Somewhat. The 'culprit' is grep so far:
> $ man -P cat git-format-patch | grep -q -e --notes
> Error executing formatting or display command.
> System command (cd "/usr/share/man" && (echo ".pl 11i"; /bin/bzip2 -c -d '/usr/share/man/man1/git-format-patch.1.bz2') | /usr/bin/gtbl | /usr/bin/nroff -mandoc | cat) exited with status 141.
> No manual entry for git-format-patch
> $ man -P cat git-format-patch | grep -e --notes
>                           [--[no-]cover-letter] [--quiet] [--notes[=<ref>]]
>        --notes[=<ref>]
> 
> It seems grep slightly behaves differently when used with -q. It closes STDIN as soon as it detects the pattern.
> But the closed pipe results in an EPIPE returned from write(2) within cat which exits with an error.
My man (from the Debian package man-db 2.6.2-1) doesn't show this
behaviour. Is your version older or newer?

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

-- 
ptxdist mailing list
ptxdist@pengutronix.de

  reply	other threads:[~2014-04-01  9:37 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-27  7:16 Alexander Stein
2014-03-29  9:28 ` Michael Olbrich
2014-03-31 17:08   ` Alexander Stein
2014-04-01  8:24     ` Uwe Kleine-König
2014-04-01  9:24       ` Alexander Stein
2014-04-01  9:37         ` Uwe Kleine-König [this message]
2014-04-01  9:59           ` Alexander Stein
2014-04-01 10:55             ` Michael Olbrich
2014-04-01 12:30             ` Uwe Kleine-König
2014-04-01 13:07               ` Alexander Stein
2014-04-01 13:53                 ` Alexander Stein

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

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20140401093730.GB29751@pengutronix.de \
    --to=u.kleine-koenig@pengutronix.de \
    --cc=alexander.stein@systec-electronic.com \
    --cc=m.olbrich@pengutronix.de \
    --cc=ptxdist@pengutronix.de \
    /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.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox