Cryptic error when expanding path with ~\ on Linux

[imciner2]

This is a somewhat oddball situation, mainly caused by my fat-fingering the path separator in a string that I tried to auto-expand, but the error thrown when I did that was not very helpful:

(@v1.5) pkg> dev ~\de┌ Error: Error in the keymap
│   exception =
│    ArgumentError: ~user tilde expansion not yet implemented
│    Stacktrace:
│     [1] expanduser(::String) at ./path.jl:452
│     [2] complete_local_dir(::String, ::Int64, ::Int64) at /home/imcinerney/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/Pkg/src/REPLMode/completions.jl:29
│     [3] complete_add_dev(::Dict{Symbol,Any}, ::String, ::Int64, ::Int64) at /home/imcinerney/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/Pkg/src/REPLMode/completions.jl:103
│     [4] complete_argument(::Pkg.REPLMode.CommandSpec, ::Array{String,1}, ::String, ::Int64, ::Int64) at /home/imcinerney/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/Pkg/src/REPLMode/completions.jl:152
│     [5] _completions(::String, ::Bool, ::Int64, ::Int64) at /home/imcinerney/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/Pkg/src/REPLMode/completions.jl:182
│     [6] completions(::String, ::Int64) at /home/imcinerney/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/Pkg/src/REPLMode/completions.jl:205
│     [7] complete_line(::Pkg.REPLMode.PkgCompletionProvider, ::REPL.LineEdit.PromptState) at /home/imcinerney/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/Pkg/src/REPLMode/REPLMode.jl:471
│     [8] complete_line(::REPL.LineEdit.PromptState, ::Any) at /home/imcinerney/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/REPL/src/LineEdit.jl:329
│     [9] complete_line(::REPL.LineEdit.MIState) at /home/imcinerney/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/REPL/src/LineEdit.jl:320
│     [10] edit_tab(::REPL.LineEdit.MIState, ::Any, ::Any) at /home/imcinerney/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/REPL/src/LineEdit.jl:2032 (repeats 2 times)
│     [11] (::REPL.LineEdit.var"#109#162")(::Any, ::Any, ::Vararg{Any,N} where N) at /home/imcinerney/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/REPL/src/LineEdit.jl:2073
│     [12] #invokelatest#1 at ./essentials.jl:710 [inlined]
│     [13] invokelatest at ./essentials.jl:709 [inlined]
│     [14] (::REPL.LineEdit.var"#22#23"{REPL.LineEdit.var"#109#162",String})(::Any, ::Any) at /home/imcinerney/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/REPL/src/LineEdit.jl:1364
│     [15] prompt!(::REPL.Terminals.TextTerminal, ::REPL.LineEdit.ModalInterface, ::REPL.LineEdit.MIState) at /home/imcinerney/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/REPL/src/LineEdit.jl:2447
│     [16] run_interface(::REPL.Terminals.TextTerminal, ::REPL.LineEdit.ModalInterface, ::REPL.LineEdit.MIState) at /home/imcinerney/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/REPL/src/LineEdit.jl:2350
│     [17] run_frontend(::REPL.LineEditREPL, ::REPL.REPLBackendRef) at /home/imcinerney/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/REPL/src/REPL.jl:1143
│     [18] (::REPL.var"#38#42"{REPL.LineEditREPL,REPL.REPLBackendRef})() at ./task.jl:356
└ @ REPL.LineEdit ~/dev/julia/main/stable/usr/share/julia/stdlib/v1.5/REPL/src/LineEdit.jl:2449
julia> 
(@v1.5) pkg> dev /home/imcinerney/dev/

Clearly the auto-expand is implemented, since changing to the proper separator did expand. So I think there needs to be a clearer error in this case.

[yuyichao]

IMHO autocompletion should never error = = ..... (a warning that does not disrupt current input might be OK though...)

[imciner2]

I'd be fine with no error here as well - since not completing it would be a good warning to me that I mistyped something.