From bf98db67a3cde215a6cbbad2e0016e7c37bfb639 Mon Sep 17 00:00:00 2001
From: Daniel Schwabeneder <daschw@disroot.org>
Date: Wed, 1 Apr 2020 17:32:31 +0200
Subject: [PATCH] fix type recipes for other backends

---
 src/args.jl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/args.jl b/src/args.jl
index 3b6e0339..e4f137af 100644
--- a/src/args.jl
+++ b/src/args.jl
@@ -656,6 +656,7 @@ function default(k::Symbol)
         letter, key = axis_k
         return _axis_defaults_byletter[letter][key]
     end
+    k == :letter && return k # for type recipe processing
     k in _suppress_warnings || error("Unknown key: ", k)
 end