GNU bug report logs - #3429
23.0.91; solar.el: solar seasons variable should not be a constant

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From: help-debbugs <at> gnu.org (Emacs bug Tracking System)
To: Glenn Morris <rgm <at> gnu.org>
Subject: bug#3429: marked as done (23.0.91; solar.el: solar seasons
 variable should not be a constant)
Date: Thu, 04 Jun 2009 06:45:04 +0000

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Your message dated Thu, 04 Jun 2009 02:39:10 -0400
with message-id <bezlcofqpd.fsf <at> fencepost.gnu.org>
and subject line Re: bug#3429: 23.0.91; solar.el: solar seasons variable should not be a constant
has caused the Emacs bug report #3429,
regarding 23.0.91; solar.el: solar seasons variable should not be a constant
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

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From: Teemu Likonen <tlikonen <at> iki.fi>
To: emacs-pretest-bug <at> gnu.org
Cc: rfrancoise <at> debian.org
Subject: 23.0.91; solar.el: solar seasons variable should not be a constant
Date: Sun, 31 May 2009 16:58:26 +0300

This commit made solar-?-hemi-seasons constants:

    commit 7ac202f6ec47df634066e61cc4cf17705257d9dc
    Author: Glenn Morris <rgm <at> gnu.org>
    Date:   2008-03-15 02:55:06 +0000

        (solar-n-hemi-seasons, solar-s-hemi-seasons): Make constants.
        (solar-sunrise-sunset): Rename some local variables for clarity.
        (sunrise-sunset): Use zerop.
        (solar-mean-equinoxes/solstices): Doc fix.

What is the rationale for that? They were defvars before.

As the doc of "defconst" says "The intent is that neither programs nor
users should ever change this value." Having solar seasons constants is
not sensible because it's very useful to localize the solar seasons'
names, and I'm trying to do exactly that with my Finnish localized
holidays:

    http://www.emacswiki.org/emacs/suomalainen-kalenteri.el

Yes, I can localize solar season by putting this in my ~/.emacs:

    (eval-after-load 'solar
      '(setq solar-n-hemi-seasons '("Kevätpäiväntasaus" "Kesäpäivänseisaus"
                                    "Syyspäiväntasaus" "Talvipäivänseisaus")
             solar-s-hemi-seasons '("Syyspäiväntasaus" "Talvipäivänseisaus"
                                    "Kevätpäiväntasaus" "Kesäpäivänseisaus")))

But this is not nice and it's difficult for external packages to
localize those variables.

I'd suggest making them defvas again (or defcustoms).

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From: Glenn Morris <rgm <at> gnu.org>
To: 3429-done <at> debbugs.gnu.org
Subject: Re: bug#3429: 23.0.91; solar.el: solar seasons variable should not be a constant
Date: Thu, 04 Jun 2009 02:39:10 -0400

OK, it's a defcustom.

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