Awk source functions file

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Is there a way to source functions and variables from a file with awk?

What I am looking for is a way sourcing/including functions and variables in a similar way we do for shell scripts:

I tried source, include but I get:

awk 'BEGIN{ include /tmp/awk-functions }{myfunc}' file
awk: fatal: division by zero attempted

Is it possible?

I believe igawk is what you're looking for:

http://linux.about.com/library/cmd/blcmdl1_igawk.htm

Want an AWK that implements '@include'

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