Work around the world counter issue in Documenter

documenter-world-counter.patch

diff --git a/src/Expanders.jl b/src/Expanders.jl
index 484622f..f7025f4 100644
--- a/src/Expanders.jl
+++ b/src/Expanders.jl
@@ -471,11 +471,7 @@ function Selectors.runner(::Type{ExampleBlocks}, x, page, doc)
     # Splice the input and output into the document.
     content = []
     input   = droplines(x.code)
-
-    # Special-case support for displaying SVG graphics. TODO: make this more general.
-    output = mimewritable(MIME"image/svg+xml"(), result) ?
-        Documents.RawHTML(stringmime(MIME"image/svg+xml"(), result)) :
-        Markdown.Code(Documenter.DocChecks.result_to_string(buffer, result))
+    output = Base.invokelatest(get_output, result, buffer)

     # Only add content when there's actually something to add.
     isempty(input)  || push!(content, Markdown.Code("julia", input))
@@ -484,6 +480,15 @@ function Selectors.runner(::Type{ExampleBlocks}, x, page, doc)
     page.mapping[x] = Markdown.MD(content)
 end

+function get_output(result, buffer)
+    # Special-case support for displaying SVG graphics. TODO: make this more general.
+    if mimewritable(MIME"image/svg+xml"(), result)
+        Documents.RawHTML(stringmime(MIME"image/svg+xml"(), result))
+    else
+        Markdown.Code(Documenter.DocChecks.result_to_string(buffer, result))
+    end
+end
+
 # @repl
 # -----