From 58f0daeade27425f989a3acb20d2069b575112ec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timoth=C3=A9e=20Poisot?= <timothee.poisot@umontreal.ca>
Date: Wed, 3 Nov 2021 13:17:05 -0400
Subject: [PATCH] 0-length element bug for backbone

---
 Project.toml    | 2 +-
 src/backbone.jl | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/Project.toml b/Project.toml
index 8f6d248..cc0abe4 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "Mangal"
 uuid = "b8b640a6-63d9-51e6-b784-5033db27bef2"
 authors = ["Timothée Poisot <timothee.poisot@umontreal.ca>"]
-version = "0.4.1"
+version = "0.4.2"
 
 [deps]
 Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
diff --git a/src/backbone.jl b/src/backbone.jl
index c327ddb..d1f3b34 100644
--- a/src/backbone.jl
+++ b/src/backbone.jl
@@ -4,5 +4,6 @@
 Returns the backbone entry for a taxon, matched by *exact* name.
 """
 function backbone(name::AbstractString)
-    return first(backbones(Pair("name", name)))
+    q = backbones(Pair("name", name))
+    return isequal(1)(length(q)) ? only(q) : nothing
 end