Support catch_stack API

[tkf]

Lately, I've been seeing accidental exit from Julia REPL with error like this:

ERROR: MethodError: Cannot `convert` an object of type Array{Union{Ptr{Nothing}, Base.InterpreterIP},1} to an object of type Bool
Closest candidates are:
  convert(::Type{T<:Number}, ::T<:Number) where T<:Number at number.jl:6
  convert(::Type{T<:Number}, ::Number) where T<:Number at number.jl:7
  convert(::Type{T<:Integer}, ::Ptr) where T<:Integer at pointer.jl:23
  ...
Stacktrace:
 [1] setproperty!(::REPL.LineEditREPL, ::Symbol, ::Array{Union{Ptr{Nothing}, Base.InterpreterIP},1}) at ./Base.jl:19
 [2] print_response(::REPL.AbstractREPL, ::Any, ::Bool, ::Bool) at /home/takafumi/repos/watch/julia/usr/share/julia/stdlib/v1.2/REPL/src/REPL.jl:139
 [3] (::getfield(REPL, Symbol("#do_respond#38")){Bool,getfield(REPL, Symbol("##48#57")){REPL.LineEditREPL,REPL.REPLHistoryProvider},REPL.LineEditREPL,REPL.LineEdit.Prompt})(::Any, ::Any, ::Any) at /home/takafumi/repos/watch/julia/usr/share/julia/stdlib/v1.2/REPL/src/REPL.jl:701
 [4] #invokelatest#1 at ./essentials.jl:761 [inlined]
 [5] invokelatest at ./essentials.jl:760 [inlined]
 [6] run_interface(::REPL.Terminals.TextTerminal, ::REPL.LineEdit.ModalInterface, ::REPL.LineEdit.MIState) at /home/takafumi/repos/watch/julia/usr/share/julia/stdlib/v1.2/REPL/src/LineEdit.jl:2273
 [7] run_frontend(::REPL.LineEditREPL, ::REPL.REPLBackendRef) at /home/takafumi/repos/watch/julia/usr/share/julia/stdlib/v1.2/REPL/src/REPL.jl:1021
 [8] run_repl(::REPL.AbstractREPL, ::Any) at /home/takafumi/repos/watch/julia/usr/share/julia/stdlib/v1.2/REPL/src/REPL.jl:192
 [9] (::getfield(Base, Symbol("##729#731")){Bool,Bool,Bool,Bool})(::Module) at ./client.jl:402
 [10] #invokelatest#1 at ./essentials.jl:761 [inlined]
 [11] invokelatest at ./essentials.jl:760 [inlined]
 [12] run_main_repl(::Bool, ::Bool, ::Bool, ::Bool, ::Bool) at ./client.jl:386
 [13] exec_options(::Base.JLOptions) at ./client.jl:324
 [14] _start() at ./client.jl:476

I think this is due to the change JuliaLang/julia#30900 in REPL.jl in particular the change in eval_with_backend which now expects a Bool in the second slot:

function eval_with_backend(ast, backend::REPLBackendRef)
    put!(backend.repl_channel, (ast, 1))
    take!(backend.response_channel) # (val, iserr)
end

I think this solves the issue but I haven't looked into the issue carefully enough to find a way to reproduce the issue. However, given the changes in JuliaLang/julia#30900 this change seems to be appropriate.

[codecov]

Codecov Report

Merging #240 into master will increase coverage by 0.3%.
The diff coverage is 0%.

@@            Coverage Diff            @@
##           master     #240     +/-   ##
=========================================
+ Coverage   77.83%   78.14%   +0.3%     
=========================================
  Files          11       11             
  Lines        1074     1080      +6     
=========================================
+ Hits          836      844      +8     
+ Misses        238      236      -2

Impacted Files	Coverage Δ
src/Revise.jl	69.16% <0%> (+1.18%)	⬆️
src/pkgs.jl	89.28% <0%> (-0.93%)	⬇️
src/parsing.jl	88.99% <0%> (+0.91%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 97d3560...fd7f4c3. Read the comment docs.

[codecov]

Codecov Report

Merging #240 into master will increase coverage by 0.3%.
The diff coverage is 0%.

@@            Coverage Diff            @@
##           master     #240     +/-   ##
=========================================
+ Coverage   77.83%   78.14%   +0.3%     
=========================================
  Files          11       11             
  Lines        1074     1080      +6     
=========================================
+ Hits          836      844      +8     
+ Misses        238      236      -2

Impacted Files	Coverage Δ
src/Revise.jl	69.16% <0%> (+1.18%)	⬆️
src/pkgs.jl	89.28% <0%> (-0.93%)	⬇️
src/parsing.jl	88.99% <0%> (+0.91%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 97d3560...fd7f4c3. Read the comment docs.

[timholy]

This is great, thanks so much!