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>&2 vs. 1>&2

From: Karl Berry
Subject: >&2 vs. 1>&2
Date: Tue, 19 Mar 2013 21:20:00 GMT

Is there a portability reason to use 1>&2 vs. just >&2 to redirect to stderr?
I don't know of one, and don't see it mentioned in autoconf(Portable Shell).
The gnupload script currently uses both.
Just wondering.


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