[bug?] should ltxpng be ltximg in ox-html?

[Eric S Fraga]

Hello,

line 1696 of ox-html.el (up to date version on git) is:

   :alt (if (string-match-p "^ltxpng/" source)
   
I wonder whether "^ltxpng" should actually be "^ltximg"?

Better yet, should it not be built from the value of
org-preview-latex-image-directory, defined as a custom variable and used
in one place in ox-html?  Or have I confused two different aspects of
LaTeX images?  I'm asking because the hardcoded pattern doesn't pick up
the alt= text for accessibility in HTML export of LaTeX fragments.

The same applies to ox-odt, by the way.

Thank you.
-- 
: Eric S Fraga via Emacs 28.0.50, Org release_9.3.7-645-g945f49