Function ensureCommandHistory

library/LuaApi.cpp:1276–1282

static std::map<string, CommandHistory> commandHistories;

static CommandHistory * ensureCommandHistory(string id,
                                             string src_file) {
    if (!commandHistories.count(id)) {
        commandHistories[id].load(src_file.c_str());
    }
    return &commandHistories[id];
}

static int getCommandHistory(lua_State *state)
{