[debbugs-tracker] bug#34608: closed (date +%+4C is unimplemented, contrary to POSIX)

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Your message dated Mon, 25 Feb 2019 00:27:47 -0800
with message-id <address@hidden>
and subject line Re: bug#34608: date +%+4C is unimplemented, contrary to POSIX
has caused the debbugs.gnu.org bug report #34608,
regarding date +%+4C is unimplemented, contrary to POSIX
to be marked as done.

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34608: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=34608
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> --- Begin Message ---
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> Subject: 
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> date +%+4C is unimplemented, contrary to POSIX
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> Date: 
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> Thu, 21 Feb 2019 11:10:06 -0600
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> User-agent: 
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> Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0
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> POSIX requires the '+' flag in %C to output padding with leading 0, and
> additionally to add a +/- indicator if the minimum field width is larger
> than 2 bytes.  Thus:
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> date -d 0001-01-01 +.%+4C.
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> should produce ".+000.", but currently it produces ".%+4C." because the
> + flag is unimplemented.
>
> See also http://austingroupbugs.net/view.php?id=1184
>
> -- 
> Eric Blake, Principal Software Engineer
> Red Hat, Inc.           +1-919-301-3226
> Virtualization:  qemu.org | libvirt.org
>
>
>
> --- End Message ---

--- Begin Message --- Subject: Re: bug#34608: date +%+4C is unimplemented, contrary to POSIX Date: Mon, 25 Feb 2019 00:27:47 -0800 User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0

Eric Blake wrote:

The best I can do is search austingroupbugs.net for all bugs containing
strftime, which pulls up a current total of 25 issues.

Thanks for doing that. I read through those issues, and the only one that seems relevant (i.e., resolved by austingroup but not in Gnulib) is the business with the + conversion specification flag. I installed this Gnulib patch to implement the flag:

https://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=188d87b05190690d6f8b0577ec65ef221a711d08

Then I installed the attached coreutils patches to propagate the Gnulib patch into coreutils, and I am marking this coreutils bug as done.

glibc strftime should also support the + conversion specification flag. I filed a bug report for that here:

https://sourceware.org/bugzilla/show_bug.cgi?id=24264

0001-build-update-gnulib-submodule-to-latest.patch
Description: Text Data

0002-date-conversion-specification-flag.patch
Description: Text Data

0003-doc-fix-typo-in-previous-patch.patch
Description: Text Data

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