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Brad King authored
CTest filters the output from tools and tests to ensure that the XML build/test result documents it generates have valid characters. Previously we just converted all non-ASCII bytes into XML-escaped Unicode characters of the corresponding index. This does not preserve tool output encoded in UTF-8. We now assume UTF-8 output from tools and implement decoding as specified in RFC 3629. Valid characters are preserved, possibly with XML escaping. Invalid byte sequences and characters are converted to human-readable hex values with distinguishing tags. See issue #10003.
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