On 04/04/2016 10:01 PM, Jim Meyering wrote: > On Mon, Apr 4, 2016 at 7:43 PM, Mike Frysinger <vap...@gentoo.org> wrote: >> the code as written has existed since it was first committed in Mar 2000: >> http://git.savannah.gnu.org/cgit/coreutils.git/commit/?h=29d3ba4a7b42ed1b40b963b6047f2412ea4843b1 >> although the Author says Jim, the ChangeLog file says Bruno Haible. >> >> that predates the merge of file/text/shell utils into coreutils (2003), >> and printf was part of the shellutils project. unfortunately the history >> is pretty spotty that far back ... here's its mailing list archive: >> https://lists.gnu.org/archive/html/bug-sh-utils/ >> >> so i guess really you'd have to ask Bruno and/or Jim. my guess is that >> it comes from the C standard: >> http://c0x.coding-guidelines.com/6.4.3.html >> and you might find this interesting: >> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2170.html >> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3881.pdf > > I confirm it was a patch by Bruno Haible. > I have a copy of a message from him with the following changes > that appears to have been sent only to Markus Kuhn and me. > As he explained, these changes were motivated by the then-recent > approval of ISO C99. Here are the ChangeLog entries:
That said, it may be time to consider teaching coreutils to accept ALL \uXXXX escapes, rather than just the ones required by C99, as an extension for ease of use. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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