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Re: [PATCH] printf: add %#s alias to %b

From: Chet Ramey
Subject: Re: [PATCH] printf: add %#s alias to %b
Date: Tue, 5 Sep 2023 16:25:43 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.14.0

On 9/5/23 3:58 PM, enh wrote:
On Fri, Sep 1, 2023 at 6:59 AM Chet Ramey <> wrote:

I think you'll find that, regardless of its origins, there are more scripts
using the %b specifier than you think.

i'd personally never heard of printf(1) %b before this thread, but
debian code search agrees with you:

It's a POSIX invention dating from at least 1991 (P1003.2-D11).

The POSIX guidance to use it as a portable way to replace SysV echo has
dated from the same time. It's a pretty big lift to suddenly invalidate
all that prior art. ("POSIX giveth, and POSIX taketh away.").

``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU

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