> Asilata Bapat <[email protected]> writes:
>
>> But it seems to me that there is still the following problem in ox-html.el.
>> The documentation of org-html-format-latex does not make it clear that its
>> last argument, the info plist, *has to* contain the property :output-file in
>> order to avoid a runtime error!
>>
>> The further heart of the matter is the weird behaviour of
>> file-name-directory: in particular, running (file-name-directory "") gives
>> nil, while running (file-name-directory nil) throws an error. I don't
>> understand why those two calls should behave differently.
>>
>> Anyway, because of this issue, an unsuspecting external call to
>> org-html-format-latex is doomed to fail. Because it probably won't
>> explicitly include :output-file in its info plist. This does not seem good!
>
> Right.
> However, do note that we will likely deprecate org-html-format-latex in
> one of the future releases, when we merge the latex preview branch.
> CCing Karthik.
> Karthik, could you please take a look and consider whether this
> situation will be problematic on the branch?
First, about the version of org-html-format-latex on main.
The line in question used to be
(setq cache-relpath
(concat (file-name-as-directory org-preview-latex-image-directory)
(file-name-sans-extension
(file-name-nondirectory bfn)))
cache-dir (file-name-directory bfn))
but was changed at some point to
(setq cache-relpath
(concat (file-name-as-directory org-preview-latex-image-directory)
(file-name-sans-extension
(file-name-nondirectory bfn)))
cache-dir (file-name-directory (plist-get info :output-file)))
where bfn is
(or (buffer-file-name)
(make-temp-name
(expand-file-name "latex" temporary-file-directory)))
It seems to me that :output-file should only be the preferred location,
and it should still fall back to bfn:
(setq cache-relpath
(concat (file-name-as-directory org-preview-latex-image-directory)
(file-name-sans-extension
(file-name-nondirectory bfn)))
cache-dir (file-name-directory
(or (plist-get info :output-file) bfn)))
This should fix the issue.
-----
On the org-latex-preview branch, there is no org-html-format-latex, of
course, and the preview image location on disk is determined entirely by
org-html-latex-image-options.
org-mime calls (org-mime-export-buffer-or-subtree), which calls
(org-export-to-buffer
'html "*Org Mime Export*" nil subtreep nil t
'(:with-latex imagemagick :section-numbers nil :with-author nil :with-toc
nil))
The location of the image files in the HTML export depends on the value
of :image-dir in the new option org-html-latex-image-options, which
defaults to the relative directory "ltximg/". This default was chosen
as it is the default behavior of ox-html on main as well.
So the fragment image is placed in ./ltximg/some-long-hash.png, with the
directory created if required.
:image-dir in org-html-latex-image-options can take all the values that
org-latex-preview-cache can, so it can be a relative or absolute
directory, or the symbols 'persist and 'temp to store the generated
image in the Org persist cache or (temporary-file-directory),
respectively.
I tested org-mime-org-buffer-htmlize and verified that it works like
this on the branch.
Karthik
