"#Gauche tracks source code location information and shows it in the stack trace. However, what if the source is generated by macros? In 0.9.12, the macro expander re-attached the original source info to the outermost form of the macro output. However, if a runtime error occurred in constructed code other than the outermost one, stack trace couldn't find the info and had to show '[unknown location]'. It was annoying especially when the code was the result of nested macro expansions, that you didn't get a clue about where the error came from."
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