Re: [O] Bug: Operator associativity problem [9.1.9 (release_9.1.9-65-g5e4542 @ /usr/share/emacs/26.1/lisp/org/)]

[Justus Winter]

"Fraga, Eric"  writes:

> On Wednesday, 25 Sep 2019 at 11:50, Justus Winter wrote:
>> I noticed a operator associativity problem when evaluating formulas in
>> tables.  To reproduce, enter:
>>
>> | :=6/2*3 |
>>
>> And evaluate the formula.  This results in:
>>
>> | 1 |
>> #+TBLFM: @1$1=6/2*3
>
> Yes, this is a property (feature, ?) of Emacs Calc.

Wow!  Re-reading the org-mode documentation I see that it is prominently
mentioned indeed, and that it is an precedence thing, not an
associativity one.

However, I cannot fathom the rationale behind this property, and for a
spreadsheet-like application I consider it borderline negligent.

Thanks,
Justus


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[O] Bug: Operator associativity problem [9.1.9 (release_9.1.9-65-g5e4542 @ /usr/share/emacs/26.1/lisp/org/)]

[Justus Winter]

Remember to cover the basics, that is, what you expected to happen and
what in fact did happen.  You don't know how to make a good report?  See

 https://orgmode.org/manual/Feedback.html#Feedback

Your bug report will be posted to the Org mailing list.


I noticed a operator associativity problem when evaluating formulas in
tables.  To reproduce, enter:

| :=6/2*3 |

And evaluate the formula.  This results in:

| 1 |
#+TBLFM: @1$1=6/2*3

Whereas AIUI it should be 9:

% gcc -x c - <<< 'int main() { return 6/2*3; }' && ./a.out ; echo $?
9
% python -c 'print(6/2*3)'
9

Emacs  : GNU Emacs 26.1 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.4)
 of 2019-02-03, modified by Debian
Package: Org mode version 9.1.9 (release_9.1.9-65-g5e4542 @ 
/usr/share/emacs/26.1/lisp/org/)

current state:
==
(setq
 org-src-mode-hook '(org-src-babel-configure-edit-buffer
 org-src-mode-configure-edit-buffer)
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
 org-mode-hook '(#[0 "\300\301\302\303\304$\207"
   [add-hook change-major-mode-hook org-show-block-all append
local]
   5]
 #[0 "\300\301\302\303\304$\207"
   [add-hook change-major-mode-hook org-babel-show-result-all
append local]
   5]
 org-babel-result-hide-spec org-babel-hide-all-hashes)
 org-archive-hook '(org-attach-archive-delete-maybe)
 org-confirm-elisp-link-function 'yes-or-no-p
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-bibtex-headline-format-function #[257 "\300\236A\207" [:title] 3 "\n\n(fn 
ENTRY)"]
 org-babel-pre-tangle-hook '(save-buffer)
 org-tab-first-hook '(org-babel-hide-result-toggle-maybe
  org-babel-header-arg-expand)
 org-occur-hook '(org-first-headline-recenter)
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers
  org-cycle-show-empty-lines
  org-optimize-window-after-visibility-change)
 org-speed-command-hook '(org-speed-command-activate
  org-babel-speed-command-activate)
 org-confirm-shell-link-function 'yes-or-no-p
 org-link-parameters '(("id" :follow org-id-open)
   ("rmail" :follow org-rmail-open :store
org-rmail-store-link)
   ("mhe" :follow org-mhe-open :store org-mhe-store-link)
   ("irc" :follow org-irc-visit :store org-irc-store-link)
   ("info" :follow org-info-open :export org-info-export
:store org-info-store-link)
   ("gnus" :follow org-gnus-open :store
org-gnus-store-link)
   ("docview" :follow org-docview-open :export
org-docview-export :store org-docview-store-link)
   ("bibtex" :follow org-bibtex-open :store
org-bibtex-store-link)
   ("bbdb" :follow org-bbdb-open :export org-bbdb-export
:complete org-bbdb-complete-link :store
org-bbdb-store-link)
   ("w3m" :store org-w3m-store-link) ("file+sys")
   ("file+emacs") ("doi" :follow org--open-doi-link)
   ("elisp" :follow org--open-elisp-link)
   ("file" :complete org-file-complete-link)
   ("ftp" :follow
(lambda (path) (browse-url (concat "ftp:" path
   ("help" :follow org--open-help-link)
   ("http" :follow
(lambda (path) (browse-url (concat "http:" path
   ("https" :follow
(lambda (path) (browse-url (concat "https:" path
   ("mailto" :follow
(lambda (path) (browse-url (concat "mailto:; path
   ("news" :follow
(lambda (path) (browse-url (concat "news:; path
   ("shell" :follow org--open-shell-link))
 )