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Bug: "echo -e "\0NNN" doesn't require leading '0'

From: L. Walsh
Subject: Bug: "echo -e "\0NNN" doesn't require leading '0'
Date: Sun, 19 Mar 2006 12:19:30 -0800
User-agent: Thunderbird 1.5 (Windows/20051201)

An incompatibility in echo has crept into the gnu version
of echo.  In extended processing, the leading "0" is no
longer required to start an octal sequence.  This is not
compatible with other extended echo implementations and
can cause un-anticipated side effects (like echoing "awk"
replacement args "\1" into an awk input script).


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