Changing the list of commonmarker extensions with custom renderer is broken

[hannesfostie]

Hey,

A while back @gjtorikian assisted in allowing us to choose a custom renderer for the MarkdownFilter. He also explained how to remove extensions (in our case, tagfilter).

I just discovered that when using these features together, tagfilter is not properly removed.

I added a working and a broken test for this in my branch https://github.com/hannesfostie/html-pipeline/tree/hf/extensions-issue

I'll spend a bit longer to try and figure this out but wanted to create the issue since you're much more familiar with the code, just in case you immediately knew where to look. If I find a solution I'll share it here and create a proper PR for it.

[gjtorikian]

My mistake here--I forgot to pass unsafe as an option along with the renderer, too 🤦‍♂ 4e997bf

[hannesfostie]

Aha! That makes perfect sense. Thank you!