REPL.REPLCompletions BoundsError, "Error in the keymap"

[nsajko]

julia> const a = max
max (generic function with 12 methods)

julia> a(
         (),┌ Error: Error in the keymap
│   exception =
│    BoundsError: attempt to access 0-element Vector{Any} at index [0]
│    Stacktrace:
│      [1] getindex
│        @ ./essentials.jl:13 [inlined]
│      [2] repl_eval_ex(ex::Any, context_module::Module)
│        @ REPL.REPLCompletions ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/REPLCompletions.jl:571
│      [3] detect_args_kwargs(funargs::Vector{Any}, context_module::Module, default_any::Bool, broadcasting::Bool)
│        @ REPL.REPLCompletions ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/REPLCompletions.jl:729
│      [4] complete_methods_args
│        @ ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/REPLCompletions.jl:749 [inlined]
│      [5] _complete_methods(ex_org::Expr, context_module::Module, shift::Bool)
│        @ REPL.REPLCompletions ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/REPLCompletions.jl:625
│      [6] complete_methods
│        @ ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/REPLCompletions.jl:630 [inlined]
│      [7] completions(string::String, pos::Int64, context_module::Module, shift::Bool)
│        @ REPL.REPLCompletions ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/REPLCompletions.jl:1122
│      [8] complete_line(c::REPL.REPLCompletionProvider, s::REPL.LineEdit.PromptState, mod::Module)
│        @ REPL ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/REPL.jl:547
│      [9] check_for_hint(s::REPL.LineEdit.MIState)
│        @ REPL.LineEdit ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:384
│     [10] (::REPL.LineEdit.var"#139#195")(s::REPL.LineEdit.MIState, data::Any, c::Union{Char, SubString{String}, String})
│        @ REPL.LineEdit ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:2486
│     [11] #invokelatest#2
│        @ Base ./essentials.jl:899 [inlined]
│     [12] invokelatest
│        @ Base ./essentials.jl:896 [inlined]
│     [13] (::REPL.LineEdit.var"#27#28"{REPL.LineEdit.var"#139#195", String})(s::Any, p::Any)
│        @ REPL.LineEdit ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:1670
│     [14] prompt!(term::REPL.Terminals.TextTerminal, prompt::REPL.LineEdit.ModalInterface, s::REPL.LineEdit.MIState)
│        @ REPL.LineEdit ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:2807
│     [15] run_interface(terminal::REPL.Terminals.TextTerminal, m::REPL.LineEdit.ModalInterface, s::REPL.LineEdit.MIState)
│        @ REPL.LineEdit ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:2709
│     [16] run_frontend(repl::REPL.LineEditREPL, backend::REPL.REPLBackendRef)
│        @ REPL ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/REPL.jl:1339
│     [17] (::REPL.var"#64#70"{REPL.LineEditREPL, REPL.REPLBackendRef})()
│        @ REPL ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/REPL.jl:388
└ @ REPL.LineEdit ~/tmp/jl/jl/julia-d3fb3b6e48/share/julia/stdlib/v1.11/REPL/src/LineEdit.jl:2809
julia> 
julia> versioninfo()
Julia Version 1.11.0-DEV.568
Commit d3fb3b6e489 (2023-09-29 03:37 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 8 × AMD Ryzen 3 5300U with Radeon Graphics
  WORD_SIZE: 64
  LLVM: libLLVM-15.0.7 (ORCJIT, znver2)
  Threads: 1 on 8 virtual cores
Environment:
  JULIA_EDITOR = code
  JULIA_NUM_THREADS =

So the exception is thrown right after typing (),. This was a fresh REPL session.

[nsajko]

Disabling completion hinting is a workaround: Base.active_repl.options.hint_tab_completes = false.

[IanButterworth]

Appears to be happening to a line introduced in #51454 cc. @aviatesk