Cannot bind to just Escape in REPL.

[bovine3dom]

Minimal working example, place in ~/.julia/config/startup.jl.

import REPL

const keysandstuff = Dict{Any,Any}(
    "\e\\e"   => function (s, o...)
        println("hello")
    end,
)

function repl_init(repl)
    repl.interface = REPL.setup_interface(repl; extra_repl_keymap = keysandstuff)
end

atreplinit(repl_init)

Outcome: pressing Escape prints hello, but all other special keys also print hello, e.g, the up arrow.

@Keno says that most terminal applications simply only allow a few hundred milliseconds after the escape character is entered for other characters to be entered, after which the escape characters are matched. I'll look into seeing if there is any better solution than this but I doubt that there is one - every terminal I have tried has a delay after pressing escape before escape is matched.

This would also fix being able to press Escape then b to go back a word, which tricks me into thinking I am in a Vim-style normal mode without fail.

Related: #6774

Edit: I would recommend removing the minimal example from your startup file once you have tested it, as it turns out that it makes the REPL quite hard to use...