Daniel E. Doherty writes:
> Nick,
>
> Thanks for trying this out. I tried this again using emacs -Q with both
> emacs27 and emacs28, and I still get the same result, i.e., it produces
> the link but does not display it inline. Both versions supported
> display of SVG graphics files.
Hmm, I see the same behavior you're describing: your custom function
doesn't trigger the inline display when :dir is used.
Let's look at the custom function...
> | (defun ded:org-babel-inline-display-subtree ()
> | "Redisplay inline images in subtree if cursor in source block with
> :result graphics."
> |
> | (when (org-in-src-block-p)
> | (let (beg end)
> | (save-mark-and-excursion
> | (org-mark-subtree)
> | (setq beg (point))
> | (setq end (mark)))
> | (when-let ((info (org-babel-get-src-block-info t))
> | (params (org-babel-process-params (nth 2 info)))
> | (result-params (cdr (assq :result-params params)))
> | ((member "graphics" result-params)))
> | (org-display-inline-images nil nil beg end)))))
> |
> | (add-hook 'org-babel-after-execute-hook
> #'ded:org-babel-inline-display-subtree)
So, org-display-inline-images is probably the place to start debugging.
You can step through its execution [1] and compare the "no :dir" vs
":dir" cases. When I did that, I noticed that a
(expand-file-name "dot/lehman.svg")
leads to a non-existent "/path/to/dot/dot/lehman.svg" (note the
repeating "dot/"). That's because :dir temporarily changes the
directory, and org-babel-after-execute-hook executes in that context.
To work around that, you could avoid using org-babel-after-execute-hook
and instead advise org-babel-execute-src-block so that your function is
called afterward. Another approach would be to let-bind the
default-directory in your function:
(when (org-in-src-block-p)
(let ((default-directory (if-let ((fname (buffer-file-name)))
(file-name-directory fname)
default-directory))
...)
...))
[1] (info "(elisp)Instrumenting")
