Undesired line breaks when using multiple assignments

[yilei]

Black currently formats

zzzzzzzzzzzzzzzzzzzzzzzzzzz = zzzzzzzzzzzzzzzzzzzz = zzzzzzzzzzzzzzz = (
    "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
)

to:

zzzzzzzzzzzzzzzzzzzzzzzzzzz = (
    zzzzzzzzzzzzzzzzzzzz
) = zzzzzzzzzzzzzzz = "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"

Expected behavior

Black should favor using parenthesis and break on the right most side:

zzzzzzzzzzzzzzzzzzzzzzzzzzz = zzzzzzzzzzzzzzzzzzzz = zzzzzzzzzzzzzzz = (
    "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
)

Playground link

[MeGaGiGaGon]

This has been fixed and now formats correctly playground link. The fix was put into preview by #4010 and later stabilized in version 2024 as part of #3368. #4010 also added some roughly equivalent test cases here, so this should be good to close.