From c9a087f5bce4ebf0433e078313d78acefb8a8469 Mon Sep 17 00:00:00 2001
From: Justin Willmert <justin@willmert.me>
Date: Thu, 14 Jan 2021 18:50:03 -0600
Subject: [PATCH] Do not try to show attributes of an Attribute

---
 src/show.jl   | 2 +-
 test/plain.jl | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/show.jl b/src/show.jl
index 02faaa687..cda739aa6 100644
--- a/src/show.jl
+++ b/src/show.jl
@@ -191,7 +191,7 @@ function _show_tree(io::IO, obj::Union{File,Group,Dataset,Datatype,Attributes,At
         return nothing
     end
 
-    if attributes
+    if attributes && !isa(obj, Attribute)
         obj′ = obj isa Attributes ? obj.parent : obj
         h5a_iterate(obj′, H5_INDEX_NAME, H5_ITER_INC) do _, cname, _, _
             depth_check() && return herr_t(1)
diff --git a/test/plain.jl b/test/plain.jl
index 12e7af96b..3e501f016 100644
--- a/test/plain.jl
+++ b/test/plain.jl
@@ -847,6 +847,10 @@ HDF5.show_tree(iobuf, hfile["dtype"])
 @test occursin(r"""
 📄 HDF5.Datatype: /dtype""", String(take!(buf)))
 
+HDF5.show_tree(iobuf, hfile["inner/data"]["mode"], attributes = true)
+@test occursin(r"""
+🏷️ HDF5.Attribute: mode""", String(take!(buf)))
+
 # configurable options
 
 # no emoji icons