extra newline displaying markdown objects in REPL

[JeffBezanson]

When getting help for a function, or equivalently just displaying a Markdown object, there are now two newlines at the end of the output.

E.g. 0.6:

help?> Core.eval
  eval([m::Module], expr::Expr)

  Evaluate an expression in the given module and return the result. Every Module (except those defined with baremodule) has its
  own 1-argument definition of eval, which evaluates expressions in that module.

julia> 

and now:

help?> Core.eval
  eval([m::Module], expr::Expr)

  Evaluate an expression in the given module and return the result. Every Module (except those defined with baremodule) has its own
  1-argument definition of eval, which evaluates expressions in that module.


julia> 

[fredrikekre]

I am pretty sure this is #25067, in particular the change here 88cdf44#diff-e7ece136e201ac8acd4899e1a4af3431R151, which makes it such that we don't sidestep the println here

julia/stdlib/REPL/src/REPL.jl

Line 131 in 1b92f51

println(io)

anymore (since we now dispatch to the more generic display function) cc @stevengj

[fredrikekre]

Basically, the show method here should not produce a trailing new line:

julia/stdlib/Markdown/src/render/terminal/render.jl

Line 163 in 1b92f51

Base.show(io::IO, ::MIME"text/plain", md::MD) = (term(io, md); nothing)

[stevengj]

Should be fixed by my PR.