From: Stephane CHAZELAS <stephane_chazelas@yahoo.fr>
To: dash@vger.kernel.org
Subject: Re: [PATCH] echo: fix octal escaping with \1...\7
Date: Wed, 26 Oct 2011 07:59:06 +0000 (UTC) [thread overview]
Message-ID: <slrnjaffea.cpd.stephane.chazelas@spam.is.invalid> (raw)
In-Reply-To: 1319579884-423-1-git-send-email-vapier@gentoo.org
2011-10-25, 17:58(-04), Mike Frysinger:
> POSIX states that octal escape sequences should take the form \0num
> when using echo.
Only with the XSI option (Unix), for POSIX, echo "\whatever" is
unspecified. But as far as I can tell even with XSI, "echo
'\123'" is unspecified as well, so dash is free to do what it
likes here.
> dash however additionally treats \num as an octal
> sequence. This breaks some packages (like libtool) who attempt to
> use strings with these escape sequences via variables to execute sed
> (since sed ends up getting passed a byte instead of a literal \1).
Given that the result of
echo "\123" is unspecified, those scripts would not be POSIX and
they are those to be fixed.
--
Stephane
next prev parent reply other threads:[~2011-10-26 8:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-25 21:58 [PATCH] echo: fix octal escaping with \1...\7 Mike Frysinger
2011-10-26 7:59 ` Stephane CHAZELAS [this message]
2011-10-31 3:41 ` Herbert Xu
2011-10-31 4:23 ` Mike Frysinger
2011-10-31 13:12 ` Eric Blake
2011-10-31 13:35 ` Paul Gilmartin
2011-10-31 14:03 ` Eric Blake
2011-10-31 14:56 ` Stephane CHAZELAS
2011-10-31 18:07 ` Harald van Dijk
2011-10-31 18:39 ` Mike Frysinger
2011-10-31 18:48 ` Harald van Dijk
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