Add bracket surround

cmd/micro/bindings.go

@@ -69,6 +69,7 @@ var bindingActions = map[string]func(*View, bool) bool{
 	"PastePrimary":          (*View).PastePrimary,
 	"SelectAll":             (*View).SelectAll,
 	"OpenFile":              (*View).OpenFile,
+	"WrapBracket":           (*View).WrapBracket,
 	"Start":                 (*View).Start,
 	"End":                   (*View).End,
 	"PageUp":                (*View).PageUp,
@@ -438,6 +439,7 @@ func DefaultBindings() map[string]string {
 		"Down":           "CursorDown",
 		"Right":          "CursorRight",
 		"Left":           "CursorLeft",
+		"Alt-j":          "WrapBracket",
 		"ShiftUp":        "SelectUp",
 		"ShiftDown":      "SelectDown",
 		"ShiftLeft":      "SelectLeft",