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XML parser bugs: parsing, comments, whitespace, overflow, error messages, and performance

XML parser bugs: parsing, comments, whitespace, overflow, error messages, and performance: a task in LegoFlow-SWE (Harbor dataset). For issue 2: Parse an element like xml <tag attr = "value"/ or xml <tag attr= "value"/ The parser fails to extract the attribute attr .

The task

**For issue 2:** Parse an element like ```xml <tag attr = "value"/> ``` or ```xml <tag attr= "value"/> ``` The parser fails to extract the attribute `attr`.

Part of Lego-X/LegoFlow-SWE.