__line_number__ and __filename__

[Aaron Gray]

I wondering what people think about the idea of proposing being able to get
the line number and filename of executing code in the code ? Maybe with
something simular to C preprocessors __line_number__ and __filename__. Or
as subobjects of global ?

-- 
Aaron Gray

Independent Open Source Software Engineer, Computer Language Researcher,
Information Theorist, and amateur computer scientist.
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