From: Joost Kremers <joost.m.kremers@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: Program working with shell-command but not call-process
Date: 4 Jul 2014 10:16:42 GMT [thread overview]
Message-ID: <slrnlrcvoa.tf0.joost.m.kremers@j.kremers4.news.arnhem.chello.nl> (raw)
In-Reply-To: mailman.4812.1404406058.1147.help-gnu-emacs@gnu.org
John Mastro wrote:
> Does anyone know what situation would result in this working:
>
> (shell-command-to-string "git --version")
> ;=> it returns "git version 2.0.1"
>
> But not this:
>
> (with-output-to-string
> (call-process "git" nil standard-output nil "--version"))
> ;=> it returns ""
> ;=> `call-process' alone returns 53
`with-output-to-string' takes whatever is sent to `standard-output',
converts it to a string and returns it. `call-process' sends its output
to a buffer, or optionally to a file, but not to stdout. So you won't
get any output from this construct unless `standard-output' is set to a
buffer.
However, that is probably not the source of the problem you hint at (the
fact that magit doesn't work). That is most likely due to the fact that
`call-process' alone returns 53. If git were successful, it should
return 0.
--
Joost Kremers joostkremers@fastmail.fm
Selbst in die Unterwelt dringt durch Spalten Licht
EN:SiS(9)
next parent reply other threads:[~2014-07-04 10:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.4812.1404406058.1147.help-gnu-emacs@gnu.org>
2014-07-04 10:16 ` Joost Kremers [this message]
2014-07-04 15:21 ` Program working with shell-command but not call-process Michael Heerdegen
2014-07-03 16:46 John Mastro
2014-07-03 22:51 ` Michael Heerdegen
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