How to escape underscores when matching against macros?

It appears to me that the underscore syntax for specifying types and slurping arguments is in conflict when matching against macro calls. Consider the following MWE:

julia> using MacroTools

julia> ex = :(@show f(1))
:(#= REPL[185]:1 =# @show f(1))

julia> MacroTools.@capture(ex, @show args__)
true

julia> args
1-element Vector{Any}:
 :(f(1))

julia> ex = :(@code_warntype f(1))
:(#= REPL[183]:1 =# @code_warntype f(1))

julia> MacroTools.@capture(ex, @code_warntype args__)
false

Indeed, if you look at the @macroexpand output then the _ in code_warntype triggers a MacroTools.TypeBind:

julia> @macroexpand MacroTools.@capture(ex, @code_warntype args__)
quote
    #= /home/florian/.julia/packages/MacroTools/qijNY/src/match/macro.jl:66 =#
    var"@code" = MacroTools.nothing
    args = MacroTools.nothing
    #= /home/florian/.julia/packages/MacroTools/qijNY/src/match/macro.jl:67 =#
    var"#599#env" = MacroTools.trymatch(Core._expr(:macrocall, MacroTools.TypeBind(Symbol("@code"), Set{Any}([:warntype])), $(QuoteNode(:(#= REPL[191]:1 =#))), :args__), ex)
    #= /home/florian/.julia/packages/MacroTools/qijNY/src/match/macro.jl:68 =#
    if var"#599#env" === MacroTools.nothing
        #= /home/florian/.julia/packages/MacroTools/qijNY/src/match/macro.jl:69 =#
        false
    else
        #= /home/florian/.julia/packages/MacroTools/qijNY/src/match/macro.jl:71 =#
        var"@code" = MacroTools.get(var"#599#env", Symbol("@code"), MacroTools.nothing)
        args = MacroTools.get(var"#599#env", :args, MacroTools.nothing)
        #= /home/florian/.julia/packages/MacroTools/qijNY/src/match/macro.jl:72 =#
        true
    end
end

I went through the docs again and realized that there isn't a single example where one matches against a macro. I have been doing this for a while now but only encountered the underscore problem today. Is this kind of matching even supposed to work?

This appears on MacroTools@v0.5.10.

julia> versioninfo()
Julia Version 1.9.0-rc1
Commit 3b2e0d8fbc1 (2023-03-07 07:51 UTC)
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 8 × 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-14.0.6 (ORCJIT, tigerlake)
  Threads: 1 on 8 virtual cores
Environment:
  LD_PRELOAD = /usr/lib64/libstdc++.so.6

FluxML / MacroTools.jl

How to escape underscores when matching against macros? #192