From: matt@... (matt neuburg)
Date: 2009-02-25T01:24:22+09:00
Subject: better error reporting from eval?

This might seem silly, but it is only a reduced version of a real issue.
Consider the following:

class Thing
  def ev(what)
    eval(what)
  end
  def bar()
    1 + 1
    nil + 2 # causing an exception in bar()
  end
  def foo
    bar()
  end
end

Thing.new.ev("foo()")

NoMethodError: undefined method `+' for nil:NilClass
method ev
in untitled at line 4
method foo
in untitled at line 11
method ev
in untitled document at line 1
method eval
in untitled at line 15
method ev
in untitled at line 4
at top level
in untitled at line 15

Notice that the error report makes no mention of bar(). This can make
exceptions in an eval difficult to track down. Is there a way to get
better error reporting in an eval? Thx - m.

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