fix breakpoints for keyword functions (#641)

fixes JuliaDebug/Debugger.jl#327

Author: simeonschaub

src/breakpoints.jl

@@ -97,7 +97,10 @@ function framecode_matches_breakpoint(framecode::FrameCode, bp::BreakpointSignat
     meth isa Method || return false
     bp.f isa Method && return meth === bp.f
     f = extract_function_from_method(meth)
-    if !(bp.f === f || Core.kwfunc(bp.f) === f)
+    if !(bp.f === f || @static isdefined(Core, :kwcall) ?
+            f === Core.kwcall && bp.f isa meth.sig.parameters[3] :
+            Core.kwfunc(bp.f) === f
+        )
         return false
     end
     bp.sig === nothing && return true

test/breakpoints.jl

@@ -589,4 +589,8 @@ end
     g() = fkw(; x=1)
     frame, bp = @interpret g()
     @test isa(frame, Frame) && isa(bp, JuliaInterpreter.BreakpointRef)
+
+    fkw2(;x=1) = x
+    g2() = fkw2(; x=1)
+    @test @interpret g2() === 1
 end