Generate html diff output

[sergeyshevch]

Hello! I'm looking to expose diff output into gitlab, and for now it's not support .md files to expose on pages.

Maybe it's possible to add .html output with generated styles. Later we can also improve diff readability as well

[dag-andersen]

Hi @sergeyshevch
How do you want the html output to look?
Here you can see how the markdown is generated [link]. As you can see it is very basic. We can easily add a another format that works better for GitLab :)

[sergeyshevch]

Maybe something like: https://diff2html.xyz. I guess rust also has some solution for it

For not it's slightly hard to send output to comment in gitlab but it already support exposing artifacts on gitlab pages, but it doesn't support markdown for now
https://archives.docs.gitlab.com/16.8/ee/ci/jobs/job_artifacts.html#browse-the-contents-of-the-artifacts-archive

Regarding current diff, maybe it's good idea to place each file in it's own spoiler. It will help reading of large diffs

[sergeyshevch]

Maybe I can handle it on my side later then, with something like https://github.com/pycontribs/ansi2html or https://github.com/Wilfred/difftastic/?tab=readme-ov-file

Then it can be good to have just plain git diff as an output and leave postprocessing to end user