make compact type alias output more compact (#39256)

JuliaLang · Jan 29, 2021 · c8cc69b · c8cc69b
1 parent 3ee63a6
commit c8cc69b
Showing 1 changed file with 9 additions and 5 deletions.
diff --git a/base/show.jl b/base/show.jl
@@ -789,15 +789,19 @@ function show_unionaliases(io::IO, x::Union)
 end
 
 function show(io::IO, ::MIME"text/plain", @nospecialize(x::Type))
- show(io, x)
- if !print_without_params(x) && get(io, :compact, true)
+ if !print_without_params(x)
  properx = makeproper(io, x)
  if make_typealias(properx) !== nothing || (unwrap_unionall(x) isa Union && x <: make_typealiases(properx)[2])
- print(io, " (alias for ")
- show(IOContext(io, :compact => false), x)
- print(io, ")")
+ show(IOContext(io, :compact => true), x)
+ if !(get(io, :compact, false)::Bool)
+ print(io, " (alias for ")
+ show(IOContext(io, :compact => false), x)
+ print(io, ")")
+ end
+ return
  end
  end
+ show(io, x)
  # give a helpful hint for function types
  if x isa DataType && x !== UnionAll && !(get(io, :compact, false)::Bool)
  tn = x.name::Core.TypeName