Source code in the autohotkey programming language

try
    BadlyCodedFunc()
catch e
    MsgBox % "Error in " e.What ", which was called at line " e.Line 

BadlyCodedFunc() {
    throw Exception("Fail", -1)
}


foo()
If ErrorLevel
  Msgbox calling foo failed with:  %ErrorLevel%

foo()
{
  If success
    Return
  Else
    ErrorLevel = foo_error
  Return
}