feat: make history clear function work again

history.go

@@ -78,3 +78,9 @@ func (h *fileHistory) Len() int {
 func (h *fileHistory) Dump() interface{} {
 	return h.items
 }
+
+func (h *fileHistory) clear() {
+	h.items = []string{}
+	h.f.Truncate(0)
+	h.f.Sync()
+}

rl.go

@@ -271,6 +271,6 @@ func (lr *lineReader) luaAllHistory(L *lua.LState) int {
 }
 
 func (lr *lineReader) luaClearHistory(l *lua.LState) int {
+	fileHist.clear()
 	return 0
-
 }