ignore jupyter magics about blacken-docs HOT 3 CLOSED

blacken-docs is just a thin wrapper around black -- if black can't parse it I don't think we can either

and even if we did put some weird substitution in place, I'm not sure how it could survive a round of formatting

so I think the answer here is "probably not" -- thanks for the issue though!

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I would also be interested in this.
Since the cell magics can only occur at the first line of a code chunk, I think it should be rather easy to exclude them.

In fact, adding a line to your regex parser that skips a line starting with % should already solve the problem.

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In fact, adding a line to your regex parser that skips a line starting with % should already solve the problem.

Unfortunately, this would break:

foo = (
'%s'
% 'bar'
)

if black can't parse it I don't think we can either
and even if we did put some weird substitution in place, I'm not sure how it could survive a round of formatting

Just FYI, this might soon be happening (psf/black#2357)

In the meantime, there's my little project nbQA which, like the above PR to black, transform cells using IPython's TransformerManager and ast.parse to preserve/round-trip magics

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