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Jordan PittmanandPhilipp Spiess
7cc6885cb2
Fixes #17379 The preprocessor we added to detect embedded languages uses a back reference and given a long enough file with certain byte / character patterns it'll cause what appears to be an indefinite hang (might just be catastrophically exponential backtracking but not sure) This replaces the one regex w/ back references with two, anchored, multi-line regexes Now we search for all the starting & ending delimiters in the file. We then loop over all the starting delimiters, find the paired ending one, and preprocess the content inside --------- Co-authored-by: Philipp Spiess <[email protected]>