display of linspace with BigFloat argument throws

[mzaffalon]

On Julia 0.5.2, the REPL cannot display linspace with BigFloat argument.

julia> linspace(big(-1), big(1), 11)
Error showing value of type LinSpace{BigFloat}:
ERROR: MethodError: no method matching dims2string(::Tuple{BigInt})
Closest candidates are:
  dims2string(::Tuple{Vararg{Int64,N}}) at show.jl:1481
 in _summary(::LinSpace{BigFloat}, ::Tuple{Base.OneTo{BigInt}}) at .\show.jl:1489
 in summary(::LinSpace{BigFloat}) at .\show.jl:1488
 in show(::IOContext{Base.Terminals.TTYTerminal}, ::MIME{Symbol("text/plain")}, ::LinSpace{BigFloat}) at .\replutil.jl:138
 in display(::Base.REPL.REPLDisplay{Base.REPL.LineEditREPL}, ::MIME{Symbol("text/plain")}, ::LinSpace{BigFloat}) at .\REPL.jl:132
 in display(::Base.REPL.REPLDisplay{Base.REPL.LineEditREPL}, ::LinSpace{BigFloat}) at .\REPL.jl:135
 in display(::LinSpace{BigFloat}) at .\multimedia.jl:143
 in print_response(::Base.Terminals.TTYTerminal, ::Any, ::Void, ::Bool, ::Bool, ::Void) at .\REPL.jl:154
 in print_response(::Base.REPL.LineEditREPL, ::Any, ::Void, ::Bool, ::Bool) at .\REPL.jl:139
 in (::Base.REPL.##22#23{Bool,Base.REPL.##33#42{Base.REPL.LineEditREPL,Base.REPL.REPLHistoryProvider},Base.REPL.LineEditREPL,Base.LineEdit.Prompt})(::Base.LineEdit.MIState, ::Base.AbstractIOBuffer{Array{UInt8,1}}, ::Bool) at .\REPL.jl:652
 in run_interface(::Base.Terminals.TTYTerminal, ::Base.LineEdit.ModalInterface) at .\LineEdit.jl:1579
 in run_frontend(::Base.REPL.LineEditREPL, ::Base.REPL.REPLBackendRef) at .\REPL.jl:903
 in run_repl(::Base.REPL.LineEditREPL, ::Base.##952#953) at .\REPL.jl:188
 in _start() at .\client.jl:363

julia> collect(linspace(big(-1), big(1), 11))
11-element Array{BigFloat,1}:
 -1.000000000000000000000000000000000000000000000000000000000000000000000000000000
 -8.000000000000000000000000000000000000000000000000000000000000000000000000000017e-01
 -6.000000000000000000000000000000000000000000000000000000000000000000000000000035e-01
 -4.000000000000000000000000000000000000000000000000000000000000000000000000000009e-01
 -2.000000000000000000000000000000000000000000000000000000000000000000000000000004e-01
  0.000000000000000000000000000000000000000000000000000000000000000000000000000000
  2.000000000000000000000000000000000000000000000000000000000000000000000000000004e-01
  4.000000000000000000000000000000000000000000000000000000000000000000000000000009e-01
  6.000000000000000000000000000000000000000000000000000000000000000000000000000035e-01
  8.000000000000000000000000000000000000000000000000000000000000000000000000000017e-01
  1.000000000000000000000000000000000000000000000000000000000000000000000000000000

[KristofferC]

Works on 0.6-rc3

[stevengj]

Maybe was fixed by #18777?

[mzaffalon]

@stevengj It is only the printing at the REPL that does not work.

[stevengj]

@mzaffalon, it was #18777 that changed immutable LinSpace{T} from using len::T to len::Int. The display problem above seems to be related to the old behavior of LinSpace{BigFloat} using a BigFloat length (len) rather than an Int length.

[rfourquet]

Can this be closed? Otherwise the problem should be restated and the title changed.

[stevengj]

I think this can be closed now. The analogous type in 1.0 seems to display fine:

julia> range(big(-1), stop=big(1), length=11)
11-element LinRange{BigFloat}:
 -1.0,-8.0e-01,-6.0e-01,-4.0e-01,…,2.0e-01,4.0e-01,6.0e-01,8.0e-01,1.0