Rstudio控制台中的命令行错误

Question

如何为r中的变量分配一个非常长的字符串？

以下工作正常

testVar <- "test;test;"  

但是以下内容在RStudio控制台中给出了一个奇怪的+。

testVar <- "test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test;test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

当我点击Esc按钮并打印testVar时，它仅打印test;test;

Answer 1

在"An Introduction to R" manual（help.start()）中，第1.8节：

  

在控制台输入的命令行限制为大约4095字节（不是字符）。

     

[脚注] 有些游戏机不允许你输入更多游戏机，其中一些游戏机会默默地丢弃多余的游戏机，有些会将它用作下一行的起点。 < / p>

根据评论，在控制台的处理方式上确实存在一些差异。从OP中，我们可以得出结论，RStudio不允许您输入更多字节。目前，RStudio does not acknowledge or intend to address this。

我还在R devel mailing list找到了一个2006年的对话，其中Brian D. Ripley解释了上述问题和文档。看起来自那时起（当它是1024字节时）限制发生了变化。

值得注意的是，它在源脚本中运行良好（即使＆＃34;硬编码＆＃34;）。只有REPL似乎有问题。