[erlang-questions] How to get the line number of current executable code?

[devdoer bird]

HI:

I want to implement a function like "get_current_lineno()/0" to get the
current line number of the calling point?
Eg.
.....
....
io:format("current line is ~w\n",[get_current_lineno()])
.....

the above code will print the line number of the calling point in the source
file.

How can I do this  in erlang?
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