GNU bug report logs - #36887
coreutils-8.31: printf chokes on \u0041

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Message #17 received at 36887 <at> debbugs.gnu.org (full text, mbox):

From: Ulrich Mueller <ulm <at> gentoo.org>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: base-system <at> gentoo.org, Pádraig Brady <P <at> draigBrady.com>,
 36887 <at> debbugs.gnu.org
Subject: Re: bug#36887: coreutils-8.31: printf chokes on \u0041
Date: Fri, 02 Aug 2019 10:00:03 +0200

>>>>> On Fri, 02 Aug 2019, Paul Eggert wrote:

> It's not entirely arbitrary. Because of the restriction, coreutils
> printf doesn't have to worry about what this command should do:

>   printf '\u0025d\n' 1 2

Seems quite obvious, it should do the same as these commands:

  printf '\045d\n' 1 2
  printf '\x25d\n' 1 2

This is different from C behaviour, because printf(3) doesn't deal with
backslash escapes at all, which are interpreted earlier during parsing
of the string literal. That's why I think the C reasoning doesn't apply
here.

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