[erlang-questions] program to analyse function usage

[Joe Armstrong]

I'd like to analyse a very large set of Erlang programs so see which
functions in the standard libraries actually get used.

Does anybody have a large collection of erlang modules?

Failing this I guess I could scrape code from github - is there any way to
programmatically fetch all erlang modules from github? - also are there some
download limits that I need to be aware of - I don't want to get
barred from github :-)

Cheers

/Joe