> I have realized that > https://orgmode.org/worg/org-contrib/babel/languages/ob-doc-elisp.html > has colorized source blocks. The file is created using > https://git.sr.ht/~bzg/worg/blob/master/publish.sh and the script is > executed inside a container with no available DISPLAY.
Well spotted! I think the trick there is setting org-html-htmlize-output-type to 'css. See the variable's documentation: Choices are css to export the CSS selectors only,inline-css to export the CSS attribute values inline in the HTML or nil to export plain text. We use as default inline-css, in order to make the resulting HTML self-containing. However, this will fail when using Emacs in batch mode for export, because then no rich font definitions are in place. It will also not be good if people with different Emacs setup contribute HTML files to a website, because the fonts will represent the individual setups. In these cases, it is much better to let Org/Htmlize assign classes only, and to use a style file to define the look of these classes. To get a start for your css file, start Emacs session and make sure that all the faces you are interested in are defined, for example by loading files in all modes you want. Then, use the command M-x org-html-htmlize-generate-css to extract class definitions. So, still a workaround, technically, but a nice and clean one that definitely deserves to be mentioned in this context! Best, David
