From 44d499bbe5d36f736b00ad360ce560b8f42f7d46 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Tue, 3 Aug 2021 20:19:13 +0100
Subject: Be more picky about what is Writable

Previously picked up integer left shift operator as output operator.
---
 lib/compileTimeFormatter.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/compileTimeFormatter.h b/lib/compileTimeFormatter.h
index 3779454..e45a3d9 100644
--- a/lib/compileTimeFormatter.h
+++ b/lib/compileTimeFormatter.h
@@ -255,6 +255,8 @@ namespace MyGrate {
 	concept Writable = requires(T s)
 	{
 		{s << 0};
+		{s << ""};
+		{s.write("", 0U)};
 	};
 	template<const Support::basic_fixed_string Str, Writable stream, typename... Pn>
 	inline auto &
-- 
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