Give each const group a type

This allows us to restrict which constants the compiler will allow
through, and makes the sorting in the documentation better.

1 files changed, 2 insertions, 1 deletions

diff --git a/tree.go b/tree.go
index d1a7c59..3abd31c 100644
--- a/tree.go
+++ b/tree.go
@@ -13,8 +13,9 @@ import (
 	"unsafe"
 )
 
+type Filemode int
 const (
-	FilemodeNew            = C.GIT_FILEMODE_NEW
+	FilemodeNew   Filemode = C.GIT_FILEMODE_NEW
 	FilemodeTree           = C.GIT_FILEMODE_TREE
 	FilemodeBlob           = C.GIT_FILEMODE_BLOB
 	FilemodeBlobExecutable = C.GIT_FILEMODE_BLOB_EXECUTABLE