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Re: [O] Bug: clocktable error in org-agenda [9.2.2 (release_9.2.2-245-g9

From: Nathaniel Nicandro
Subject: Re: [O] Bug: clocktable error in org-agenda [9.2.2 (release_9.2.2-245-g9d7b1e @ /home/dortmann/src/git-org-mode/lisp/)]
Date: Sat, 09 Mar 2019 00:17:55 -0600
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (darwin)

I am also experiencing this issue. I'm assuming =org-agenda-sticky= is set to
=t= in your configuration since that is what I have in mine.

I've tracked the problem down to (1) the handling of =org-agenda-sticky= in
=org-agenda-goto-date=, (2) how this affects what =org-agenda-mode= (called by
=org-agenda-redo=) does with =org-agenda-local-vars=, and (3) the subsequent
modification of variables in =org-agenda-local-vars= before another call to

1. =org-agenda-goto-date= temporarily sets =org-agenda-sticky= to =nil= before
   it calls =org-agenda-redo=.

2. None of the variables in =org-agenda-local-vars= are made buffer local when
   =org-agenda-redo= calls =org-agenda-mode= during the call to

3. Setting one of the variables in =org-agenda-local-vars= after (2) happens
   actually sets its global value instead of its local value. So, for example,
   calling =org-agenda-log-mode= will set the global value of
   =org-agenda-show-log= to =t=. Once =org-agenda-redo= is called, it will
   once again be a local variable, but now the default global value is =t=.

The main reason why log mode stays on when you try to toggle it off is because
the =reset-saved= function in =org-agenda-mode= (which restores the saved
values of =org-agenda-local-vars= after all local variables have been killed
and re-made as local variables) does not set the value of any local variable
whose saved value is =nil=.

Since the local value of =org-agenda-show-log= is =nil= when you try to
toggle log mode off, its buffer local value is not reset to =nil= by
=reset-saved=. This means that it keeps the default global value it had
when it was made into a local variable and this value is now =t= due to

So I think the main issue here is that =org-agenda-goto-date= does not
handle =org-agenda-sticky= correctly since none of the
=org-agenda-local-vars= are turned back into local variables during
=org-agenda-redo= when =org-agenda-sticky= is =t=.

Another possible issue is that the =reset-saved= function in
=org-agenda-mode= does not set the value of variables if they are =nil=, but
this is not an issue if the variables it resets are guaranteed to always
have a global default of =nil=.

I haven't looked into why =org-agenda-goto-date= needs to temporarily
set =org-agenda-sticky= to =nil. Maybe someone can answer that, but a
solution until that gets figured out is to allow =reset-saved= to set
=nil= values.

- Nathaniel

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