long comments cause needless optional parentheses

[matejcik]

Operating system: Linux
Python version: 3.6
Black version: 18.6b4
Does also happen on master: yes

here's a POC:

x = 0  # this comment is so long that i am certain it will soon end up beyond the 88 character limit

reformatted code:

x = (
    0
)  # this comment is so long that i am certain it will soon end up beyond the 88 character limit

Not sure what is the desired result here, but this is certainly not it :) Probably just leave the line alone in case where the "multilining" doesn't help? There seems to be a behavior where simple assignment is left alone even if too long.

Similar thing happens when the assigned value is long and a relatively short comment pushes it over the edge.

OTOH what I'd actually want in this case is to keep the assignment but push the comment to the next line - or somewhere else. This is the wrong formatting result, but it does notify me that human intervention is needed, which is good.

[ambv]

Agreed this is suboptimal. We already omit formatting when the target of an assignment is not splittable and too long even on its own line. We should do the same for comments that are in the same situation.

[felix-hilden]

This does not happen anymore (playground). For comment splitting please follow #1713 and #2289. I'll close this issue now!