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I'm not sure what the pattern of behaviour is but some programs - notably simple rack.ru based ones running in thin - can't easily be debugged. When a breakpoint is tripped, no source is available

Note this isn't the same as this other S.O. [issue][1]

[1]: In ruby, why does my IRB interactive debugging session always say "No sourcefile available" session-always-say-no-sourcefile

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Chris McCauley
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1 Answers1

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err, actually found the source of the problem. I had a Dir.chdir buried in my code. Any debugger call after that couldn't find the source, a call before worked fine.

Hopefully that helps somebody at some time.

Chris McCauley
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