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faq: Clarify how Ruff and Black treat line-length. (#4180)

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Christian Clauss 2023-05-03 01:19:38 +02:00 • committed by GitHub
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@ -8,6 +8,12 @@ the `line-length` setting is consistent between the two.
As a project, Ruff is designed to be used alongside Black and, as such, will defer implementing
stylistic lint rules that are obviated by autoformatting.
Note that Ruff and Black treat line-length enforcement a little differently. Black makes a
best-effort attempt to adhere to the `line-length`, but avoids automatic line-wrapping in some cases
(e.g., within comments). Ruff, on the other hand, will flag rule `E501` for any line that exceeds
the `line-length` setting. As such, if `E501` is enabled, Ruff can still trigger line-length
violations even when Black is enabled.
## How does Ruff compare to Flake8?
(Coming from Flake8? Try [`flake8-to-ruff`](https://pypi.org/project/flake8-to-ruff/) to