BoundsError when completing a Cmd-string in the REPL

[xal-0]

Applies to 1.11 and nightly.

julia> `ls ~/De<TAB>┌ Error: Error in the keymap
│   exception =
│    BoundsError: attempt to access 8-codeunit String at index [16]
│    Stacktrace:
│      [1] _nextind_str
│        @ ./strings/string.jl:199 [inlined]
│      [2] nextind
│        @ ./strings/string.jl:193 [inlined]
│      [3] completions(string::String, pos::Int64, context_module::Module, shift::Bool, hint::Bool)
│        @ REPL.REPLCompletions ~/.julia/juliaup/julia-1.11.3+0.aarch64.apple.darwin14/share/julia/stdlib/v1.11/REPL/src/REPLCompletions.jl:1278
│      [4] complete_line(c::REPL.REPLCompletionProvider, s::REPL.LineEdit.PromptState, mod::Module; hint::Bool)
│        @ REPL ~/.julia/juliaup/julia-1.11.3+0.aarch64.apple.darwin14/share/julia/stdlib/v1.11/REPL/src/REPL.jl:637
│      [5] complete_line(s::REPL.LineEdit.PromptState, repeats::Int64, mod::Module; hint::Bool)
│        @ REPL.LineEdit ~/.julia/juliaup/julia-1.11.3+0.aarch64.apple.darwin14/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:428
│      [6] complete_line(s::REPL.LineEdit.PromptState, repeats::Int64, mod::Module)
│        @ REPL.LineEdit ~/.julia/juliaup/julia-1.11.3+0.aarch64.apple.darwin14/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:427
│      [7] complete_line(s::REPL.LineEdit.MIState)
│        @ REPL.LineEdit ~/.julia/juliaup/julia-1.11.3+0.aarch64.apple.darwin14/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:369
│      [8] edit_tab(s::REPL.LineEdit.MIState, jump_spaces::Bool, delete_trailing::Bool)
│        @ REPL.LineEdit ~/.julia/juliaup/julia-1.11.3+0.aarch64.apple.darwin14/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:2419
│      [9] edit_tab
│        @ ~/.julia/juliaup/julia-1.11.3+0.aarch64.apple.darwin14/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:2419 [inlined]
│     [10] (::REPL.LineEdit.var"#118#174")(::REPL.LineEdit.MIState, ::Any, ::Vararg{Any})
│        @ REPL.LineEdit ~/.julia/juliaup/julia-1.11.3+0.aarch64.apple.darwin14/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:2465
│     [11] #invokelatest#2
│        @ ./essentials.jl:1055 [inlined]
│     [12] invokelatest
│        @ ./essentials.jl:1052 [inlined]
│     [13] (::REPL.LineEdit.var"#30#31"{REPL.LineEdit.var"#118#174", String})(s::Any, p::Any)
│        @ REPL.LineEdit ~/.julia/juliaup/julia-1.11.3+0.aarch64.apple.darwin14/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:1711
│     [14] macro expansion
│        @ ~/.julia/juliaup/julia-1.11.3+0.aarch64.apple.darwin14/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:2861 [inlined]
│     [15] macro expansion
│        @ ./lock.jl:273 [inlined]
│     [16] (::REPL.LineEdit.var"#282#284"{REPL.Terminals.TTYTerminal, REPL.LineEdit.ModalInterface, REPL.LineEdit.MIState, ReentrantLock, REPL.LineEdit.Prompt})()
│        @ REPL.LineEdit ~/.julia/juliaup/julia-1.11.3+0.aarch64.apple.darwin14/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:2851
└ @ REPL.LineEdit ~/.julia/juliaup/julia-1.11.3+0.aarch64.apple.darwin14/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:2863