[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [O] Buffer local value lost when exporting? (was Evaluate all org ta

From: Nicolas Goaziou
Subject: Re: [O] Buffer local value lost when exporting? (was Evaluate all org tables in file before exporting)
Date: Fri, 13 May 2016 18:25:31 +0200


Eric S Fraga <address@hidden> writes:

> On Thursday, 12 May 2016 at 15:54, Kaushal Modi wrote:
>> Hi all,
>> I almost have a squeaky clean solution to this thanks to the hint
>> provided by someone on emacs.SE (
>> http://emacs.stackexchange.com/a/22215/115 ).
>> But in the process, I seem to have stumbled upon a bug.. the buffer
>> local value of variables are not respected at the time of exports.
> It's not a bug but a known design feature.  A new buffer is created as
> part of the export process and this buffer does not inherit local
> variable values.  What you need to do is tell org to set specific
> variables upon export.  You can use the #+BIND: directive to do this.
> I don't know where this is documented but there is mention of whether to
> allow this to happen in the org info manual:
>    If ‘org-export-allow-bind-keywords’ is non-‘nil’, Emacs variables can
>    become buffer-local during export by using the BIND keyword.  Its
>    syntax is ‘#+BIND: variable value’.  This is particularly useful for
>    in-buffer settings that cannot be changed using specific keywords.
> Give this a try.

For completeness, export process actually inherits some buffer local
values. See `org-export--generate-copy-script', in particular

  ;; Copy specific buffer local variables and variables set
  ;; through BIND keywords.
  ,@(let ((bound-variables (org-export--list-bound-variables))
      (dolist (entry (buffer-local-variables (buffer-base-buffer)) vars)
        (when (consp entry)
          (let ((var (car entry))
                (val (cdr entry)))
            (and (not (memq var org-export-ignored-local-variables))
                 (or (memq var
                     (assq var bound-variables)
                     (string-match "^\\(org-\\|orgtbl-\\)"
                                   (symbol-name var)))
                 ;; Skip unreadable values, as they cannot be
                 ;; sent to external process.
                 (or (not val) (ignore-errors (read (format "%S" val))))
                 (push `(set (make-local-variable (quote ,var))
                             (quote ,val))

So basically, it copies all Org related variables, default directory,
buffer-file-name buffer-file-coding-system and any variable defined as
a BIND keyword, provided their value is `read'-able (e.g., not a hash


Nicolas Goaziou

reply via email to

[Prev in Thread] Current Thread [Next in Thread]