Weird behaviour with function variables leaking out of if blocks

[nilshg]

Same code in if and else blocks, get UndefVarError only on else condition

Suppose I have a function with 2 arguments, and I want to make a new function with one of the arguments fixed to a value, depending on some condition. For example: fun(x,a) = a*x function foo(flag::Bool) if flag bar(x) = fun(x,2) else bar(x) = fun(x,2) end return bar end In this example the value of a is fixed to 2 on both branches, just for illustration. If I run this code in a script, foo(true) returns the desired function, but foo(false) gives ERROR: UndefVarErr…