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From: Matthias Klose <[EMAIL PROTECTED]>
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Date: Sun, 18 Sep 2005 00:00:46 +0200
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X-Debbugs-CC: Herbert Xu <[EMAIL PROTECTED]>
Subject: dash/ash question
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Package: dash
Version: 0.5.2-7
Severity: important
echo '\1\2\3' > foo
when executed from dash (current unstable), echo's three characters,
while bash/zsh/posh echo the six characters. Found in a makefile,
generating wrong sed commands with dash.
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Date: Mon, 10 Oct 2005 15:09:30 +0000
From: Gerrit Pape <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: Re: Bug#328887: dash/ash question
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On Sun, Sep 18, 2005 at 05:52:43PM +1000, Herbert Xu wrote:
> On Sun, Sep 18, 2005 at 12:00:46AM +0200, Matthias Klose wrote:
> > echo '\1\2\3' > foo
> >
> > when executed from dash (current unstable), echo's three characters,
> > while bash/zsh/posh echo the six characters. Found in a makefile,
> > generating wrong sed commands with dash.
What I read from the spec is that the output of the command is
unspecified, see
http://www.opengroup.org/onlinepubs/009695399/utilities/echo.html
> This is correct as POSIX requires echo to interpret escape sequences.
>
> A more portable way to write the above is
>
> printf '%s\n' '\1\2\3' > foo
echo '\\1\\2\\3' also should output \1\2\3 in a posix shell, but bash
doesn't do so.
Regards, Gerrit.
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