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Date:      Tue, 25 Sep 2018 06:24:40 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 231705] pom(6) incorrect output
Message-ID:  <bug-231705-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D231705

            Bug ID: 231705
           Summary: pom(6) incorrect output
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: andrew@tao11.riddles.org.uk

Created attachment 197476
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D197476&action=
=3Dedit
patch for pom(6)

$ TZ=3DGMT-1; export TZ
$ for d in 2018.01.30 2018.01.31 2018.02.01 2018.02.02; do printf "%s: " "$=
d";
pom -d $d; done
2018.01.30: The Moon is Waxing Gibbous (97% of Full)
2018.01.31: The Moon is Waning Gibbous (100% of Full)
2018.02.01: The Moon is Full
2018.02.02: The Moon is Waning Gibbous (98% of Full)

Line 2 shows incorrect output of "Waning Gibbous" instead of "Waxing Gibbou=
s",
and 100% instead of the correct 99%. This is caused by the fact that "today"
has had 0.5 added to it before comparing against "tomorrow", which has not.

In addition, rounding means that the displayed percentage is often higher t=
han
the true value: today+0.5 is being rounded, not truncated, to 0 decimals by
%1.0f.

A separate bug causes the computed GMT time to be possibly off by one hour:=
 the
value of tm_isdst from the current time is being kept rather than being set
back to -1 when requesting a specific date or time.

Patch attached.

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