feat: filterMetaString option

[atomiks]

If the meta string also has custom config by you, it may cause issues with word highlighting or other features of rehype-pretty-code.

So Nextra would specify:

const options = {
  filterMetaString: (string) => string.replace(/filename=".*"/, ''),
};

@B2o5T

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[dimaMachina]

Looks good, ty ❤️