Steve Downey writes:
> But now it seems it's just generating definitions for faces that org itself
> defines, rather than basically everything, just prefixed with "org-",
> the htmlize-css-name-prefix.
>
> Has anyone else seen this?
Could you provide a reproducer?
See https://orgmode.org/manual/
It's been a very long time since I generated a css stylesheet, so I can't
easily bisect this issue.
org-html-htmlize-generate-css used to generate a stylesheet that included
styles for faces that only existed as part of export, such as
.org-comment {
/* font-lock-comment-face */
color: #7F
