import InteractiveUtils in startup.jl breaks default behavior

[goretkin]

The isdefined check here returns true if there is an import InteractiveUtils in startup.jl

julia/base/client.jl

Line 357 in 1887550

if !isdefined(Main, :InteractiveUtils)

The behavior of isdefined is expected, but the behavior of load_InteractiveUtils is not. Is the check even needed?

[KristofferC]

So to be clear, the point is that e.g the unqualified @code_warntype will stop working in the REPL because the using statement will not be run?

[goretkin]

e.g the unqualified @code_warntype will stop working in the REPL because the using statement will not be run

Yes, exactly. same with e.g. @edit, @which, etc. Thank you for clarifying.

[goretkin]

Is it necessary to check isdefined(Main, :InteractiveUtils)? At a glance, it seems like that code could run unconditionally.

If there does need to be a check, it should be a different check.