Normalise path names for OSX local filesystem

Fixes #194 Fixes #451 Fixes #463

local/normalise_darwin.go

@@ -0,0 +1,12 @@
+// +build darwin
+
+package local
+
+import (
+	"golang.org/x/text/unicode/norm"
+)
+
+// normString normalises the remote name as some OS X denormalises UTF-8 when storing it to disk
+func normString(remote string) string {
+	return norm.NFC.String(remote)
+}