如何在RVM中升级1.9.3的Ruby补丁级别？

Question

基于之前的StackOverflow问题，看起来将Ruby升级到最新补丁级别的正确方法是：

$ rvm upgrade 1.9.2 1.9.2-p0
Are you sure you wish to upgrade from ruby-1.9.2-p0 to ruby-1.9.2-p136? (Y/n): Y

然而，这对我来说似乎不起作用：

$ rvm upgrade 1.9.3 1.9.3-p0
Are you sure you wish to upgrade from ruby-1.9.3-p194 to ruby-1.9.3-p0? (Y/n): n
Cancelling upgrade.
$ rvm upgrade 1.9.3-p0 1.9.3
Are you sure you wish to upgrade from ruby-1.9.3-p194 to ruby-1.9.3-p194? (Y/n): n
Cancelling upgrade.
$ rvm upgrade 1.9.3-p0 1.9.3-p194
Are you sure you wish to upgrade from ruby-1.9.3-p194 to ruby-1.9.3-p194? (Y/n): n
Cancelling upgrade.
$ rvm upgrade 1.9.3-p194 1.9.3-p0
Are you sure you wish to upgrade from ruby-1.9.3-p194 to ruby-1.9.3-p0? (Y/n): n
Cancelling upgrade.

是否有更合适的方法可以使用RVM升级Ruby版本？

Answer 1

首先更新RVM：

rvm get stable

下一次升级ruby：

rvm upgrade 1.9.2

RVM将自动检测现有版本的1.9.2，并检查它是否低于最高可用补丁级别：

1. 如果可以更新，则会继续
2. 如果无法更新，则会报告错误

Answer 2

显然我已经安装了ruby 1.9.3-p194，所以我同时拥有它和1.9.3-p0。这就是升级命令令人困惑的原因。如果新版本已经存在，它将不会升级1.9.3-p0 ......