Proper escape sequence handling with Julia 1.8

[caleb-allen]

VimBindings.jl may require some core changes in order to be compatible with the Julia 1.8 REPL. It appears that there has been a shift in the way in which escape codes are handled, this need to be investigated for Julia 1.8 to function correctly with detecting the Esc key.

[caleb-allen]

Related to #8

[caleb-allen]

Possibly caused by new handling of modifier keys? JuliaLang/julia@e87e30c#diff-715d7c2a15e1520009fe6ad08ceeb3b562be4f43b4e7c5a95d45036c30564edaR109

[caleb-allen]

Also could be an issue with code loading at startup: JuliaLang/julia#43708

[caleb-allen]

It also could be a change in the way escape sequences are handled: JuliaLang/julia@7a4cef7#diff-4ed83eb0e27660d0dbbbbb112e70147cd25c5264a38731abc806a02c2d37dc62R26

[caleb-allen]

Or, halting processing of input until there is a delay between inputs. This directly violates the way in which VimBindings.jl detects the striking of the Esc key (using time-based input processing)

JuliaLang/julia@26d887e

[caleb-allen]

Or, halting processing of input until there is a delay between inputs. This directly violates the way in which VimBindings.jl detects the striking of the Esc key (using time-based input processing)

JuliaLang/julia@26d887e

The time delay is only set on Windows by default, so while this may cause an issue on Windows, this is not the cause of this issue as it is in 1.7 which behaves just fine

[caleb-allen]

This may be due to the new way tasks are handled: JuliaLang/julia#41449

If LineEdit.run_interface is run from within a task, then the replacement run_interface method overwritten by VimBindings would be shadowed because its world age would be higher than the task running the REPL.

In other words, the previous run_interface method may be calling the outdated prompt! method.

A simple solution is to call Base.invokelatest, but that would require overwriting much more REPL code.

Perhaps there is an easier solution to the code loading problem in general, to somehow load all of the overriding code before any "interface" code is executed at all.

https://github.com/JuliaLang/julia/blob/0c382c245a0d428aae6c593d5def8e6f73dafe34/stdlib/REPL/src/LineEdit.jl#L2637-L2646

[caleb-allen]

Yep, by default it is run in a task

https://github.com/JuliaLang/julia/blob/0c382c245a0d428aae6c593d5def8e6f73dafe34/stdlib/REPL/src/REPL.jl#L373

[caleb-allen]

The solution here is to load VimBindings before the REPL is initialized, from the invocation of Julia rather than in startup.jl, as described in the readme like so:

julia -i -e "using VimBindings"