Re: date(1): -d argument parsing error

[Eric Blake]

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According to James Youngman on 12/10/2008 3:08 AM:
> I'm normally reluctant to accept the need to change getdate.y (though
> this is not my call anyway of course, I'm not a maintainer) because of
> the fact that it's been around a long time and somebody somewhere may
> be relying on the current behaviour.  However, I also note that the
> "next <weekday-name>" is not currently tested by gnulib's
> tests/test-getdate.c program, and so it looks to me as if the weight
> of evidence favours changing this.  The difficulty of course is in not
> breaking something else.

As long as we're talking about getdate.y bugs, POSIX 2008 standardized the
'touch -d' option, and so we now need to fix getdate.y to parse the two
required formats:

YYYY-MM-DDThh:mm:SS[.frac][tz]
YYYY-MM-DDThh:mm:SS[,frac][tz]

    * YYYY are at least four decimal digits giving the year.
    * MM, DD, hh, mm, and SS are as with -t time.
    * T is the time designator, and can be replaced by a single <space>.
    * [.frac] and [,frac] are either empty, or a <period> ( '.' ) or a
<comma> ( ',' ) respectively, followed by one or more decimal digits,
specifying a fractional second.
    * [tz] is either empty, signifying local time, or the letter 'Z' ,
signifying UTC. If [tz] is empty, the resulting time shall be affected by
the value of the TZ environment variable.

http://www.opengroup.org/onlinepubs/9699919799/utilities/touch.html

But getdate, and thus coreutils' touch and date programs, currently choke
when using a literal "T" instead of " " in the T position.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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