Euphoria Ticket #743: provide warning mechanism for ignored return values of functions

Allow the user to turn on/off warnings where there is no return variable provided for functions.
find(needle,haystack) should warn that it should rather be
i1 = find(needle,haystack)
with/without function_return_warning
and error message like:
Warning, function "find" in line xxx has no assignment to store the result of the function


Type: Feature Request Severity: Normal Category: Error Reporting
Assigned To: unknown Status: New Reported Release: 4.0.3
Fixed in SVN #: View VCS: none Milestone:


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