XALANC-743: transform with broken supplementary characters #42
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Fix FunctionSubstring implementation to count the string data length considering the surrogate pair
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If you transform when Unicode supplementary characters is included in the input, the output will be corrupted. I also confirmed that both Xalan-C++ versions 1.10 to 1.12 have the same problem.
I found something suspicious in the XPath FunctionSubstring implementation and fixed it.
Please refer to the issue tracker for a detailed description.