[Bug-gnulib] Re: Bug(?) in date concerning 'tomorrow' and 'day'

[Paul Eggert]

"Jonas Mixter" <address@hidden> writes:

> In Sweden daylight savings is ending at October 26 this year.
> If one run `date --date="2003-10-26 tomorrow"` to convert an iso-8601 date
> into local time (and add a day at the same time), one doesn't get the date
> and time of the 27 October but instead the time 23:00 at the 26'th of
> October.
> If one instead run `date --date="2003-10-26 day"` one get the time and date
> of midnight, October 27.

Thanks for the bug report.  I think this bug was fixed in 1999 but the
fix got lost somehow.  I installed the following patch into gnulib.

2003-09-03  Paul Eggert  <address@hidden>

        * getdate.y (relative_time_table): Use tDAY_UNIT for "tomorrow",
        "yesterday", "today", and "now" rather than tMINUTE_UNIT.  Of
        course with correspondingly smaller numbers for tomorrow and
        yesterday.  From Tadayoshi Funaba.  Originally installed into
        sh-utils on 1999-08-07, but the patch got lost (I guess during the
        coreutils merge?).

Index: getdate.y
===================================================================
RCS file: /cvsroot/gnulib/gnulib/lib/getdate.y,v
retrieving revision 1.78
retrieving revision 1.79
diff -p -u -r1.78 -r1.79
--- getdate.y   5 Aug 2003 05:14:20 -0000       1.78
+++ getdate.y   3 Sep 2003 07:11:45 -0000       1.79
@@ -527,10 +527,10 @@ static table const time_units_table[] =
 /* Assorted relative-time words. */
 static table const relative_time_table[] =
 {
-  { "TOMORROW",        tMINUTE_UNIT,   24 * 60 },
-  { "YESTERDAY",tMINUTE_UNIT,  - (24 * 60) },
-  { "TODAY",   tMINUTE_UNIT,    0 },
-  { "NOW",     tMINUTE_UNIT,    0 },
+  { "TOMORROW",        tDAY_UNIT,       1 },
+  { "YESTERDAY",tDAY_UNIT,     -1 },
+  { "TODAY",   tDAY_UNIT,       0 },
+  { "NOW",     tDAY_UNIT,       0 },
   { "LAST",    tUNUMBER,       -1 },
   { "THIS",    tUNUMBER,        0 },
   { "NEXT",    tUNUMBER,        1 },