GNU bug report logs - #26260
~f SRFI-19 format specifier mishandles one-digit seconds value

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Zefram <zefram <at> fysh.org>
Subject: bug#26260: closed (Re: bug#26260: ~f SRFI-19 format specifier
 mishandles one-digit seconds value)
Date: Wed, 19 Apr 2017 13:48:02 +0000

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Your bug report

#26260: ~f SRFI-19 format specifier mishandles one-digit seconds value

which was filed against the guile package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 26260 <at> debbugs.gnu.org.

-- 
26260: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=26260
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Andy Wingo <wingo <at> igalia.com>
To: 26260-done <at> debbugs.gnu.org
Subject: Re: bug#26260: ~f SRFI-19 format specifier mishandles one-digit
 seconds value
Date: Wed, 19 Apr 2017 15:46:54 +0200

thanks

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From: Zefram <zefram <at> fysh.org>
To: bug-guile <at> gnu.org
Subject: ~f SRFI-19 format specifier mishandles one-digit seconds value
Date: Sun, 26 Mar 2017 03:09:29 +0100

The ~f format specifier for SRFI-19's date->string is documented as:

#    ~f     seconds and fractional seconds, with locale
#           decimal point, eg. `5.2'

Let's test that example:

scheme@(guile-user)> (use-modules (srfi srfi-19))
scheme@(guile-user)> (date->string (make-date 200000000 5 34 12 26 3 2017 0) "~f")
$1 = "05.2"

That's not the documented format: the doc and the SRFI itself show "5.2"
with no leading padding, but actual behaviour is to zero pad.  There is
much that is ambiguous in the SRFI's specification of ~f, but with that
example it does at least seem clear that there should be no padding there.

-zefram

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