vendorify
diff --git a/go/vendor/golang.org/x/text/width/gen_trieval.go b/go/vendor/golang.org/x/text/width/gen_trieval.go
new file mode 100644
index 0000000..c17334a
--- /dev/null
+++ b/go/vendor/golang.org/x/text/width/gen_trieval.go
@@ -0,0 +1,34 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+package main
+
+// elem is an entry of the width trie. The high byte is used to encode the type
+// of the rune. The low byte is used to store the index to a mapping entry in
+// the inverseData array.
+type elem uint16
+
+const (
+ tagNeutral elem = iota << typeShift
+ tagAmbiguous
+ tagWide
+ tagNarrow
+ tagFullwidth
+ tagHalfwidth
+)
+
+const (
+ numTypeBits = 3
+ typeShift = 16 - numTypeBits
+
+ // tagNeedsFold is true for all fullwidth and halfwidth runes except for
+ // the Won sign U+20A9.
+ tagNeedsFold = 0x1000
+
+ // The Korean Won sign is halfwidth, but SHOULD NOT be mapped to a wide
+ // variant.
+ wonSign rune = 0x20A9
+)