Black ignores skip-string-normalization flag

Question

In my pre-commit configuration I have black version 19.10b0 and in pyproject.toml I have line:

skip-string-normalization = true

So my strings don't get double quotes normalized.

But then I run pre-commit autoupdate, black version upgrades to 20.8b1 and all strings get normalized to double quoted variant.

I don't understand why this happens, any reasons for that?

black changelog have nothing about strings or quotes between this two versions.

Also if I explicitly pass pyproject.toml to black (using args: [--config=./pyproject.toml] line) it still normalizes strings

Answer 1

Answer is given in a black issue

It was a bug.

But it will be shipped to release soon