Debugger REPL has no memory

julia> function foo(x)
           y = 2x
           a = 1
           return a + y
       end
foo (generic function with 2 methods)

julia> @enter foo(3)
In foo(x) at REPL[13]:2
 1  function foo(x)
>2      y = 2x
 3      a = 1
 4      return a + y
 5  end

About to run: (*)(2, 3)
1|debug> n
In foo(x) at REPL[13]:2
 1  function foo(x)
 2      y = 2x
 3      a = 1
>4      return a + y
 5  end

About to run: (+)(1, 6)
1|julia> asdf = 1234  # I typed ` here to run code in the context of foo() 
1234

1|julia> asdf
ERROR: UndefVarError: asdf not defined

Another issue with this example, unrelated to the title of this issue, is that when I hit n it ran both the y = 2x line and the a = 1 line. As far as I know, hitting n should only run one line.

Reproduce the example from the issue using the Julia REPL, @enter foo(3), backtick context execution, and n. Start by tracing how the debugger REPL evaluates expressions in the current function context and how n advances execution. Done means assignments remain available in that context and n advances according to the expected source line behavior.