Editors shouldn't usually alter the contents of quotations. So for many or most Edit Checks, it would be desirable for them to ignore quoted text.
However quoted text can be difficult to detect. Quotations can be represented in different ways, e.g. template wrapped (e.g. {{Blockquote ...}} on enwiki or {{Zitat ...}} on dewiki), or wrapped in <blockquote>...</blockquote>, or enclosed in plain quotation marks (e.g. “...” or "..." in English, 「...」 in Traditional Chinese, etc).
It is infeasible to detect all quoted text reliably, because of the ambiguity of quotation marks, but we may be able to minimize false positives at the cost of having more false negatives.
