Just doesn't work in some files, for hard to explain reasons

[elkowar]

I think that it's related to comments (#58 ?),.. but idk.
I'm configuring vim in fennel, and making heavy use of parinfer while writing that config. In some files it just stopped working after a while, and idk why. From time to time, I notice parenthesis stacking at the end of comments that i use for folding.

Originally i thought this may be fixed by making foldmarker something that isn't also valid parenthesis ({{{ to foldstart) but that didn't fix it. I don't really know how to approach this, but I have noticed the above-mentioned issues with comments.

Once it occurs again, I'll update the issue with more details, such as the file where it breaks ^^