Github user adamosloizou commented on the pull request:
https://github.com/apache/spark/pull/1230#issuecomment-47319385
@vanzin great catch! Unfortunately, it will not work with this patch as it
captures the `exit` before it passes it down to the evaluation section:
```
scala> val exit = 1
exit: Int = 1
scala> exit
Stopping spark context.
```
From a quick look, it seems to be non-trivial to intercept the `exit`
evaluation at a lower level.
The patch seems to only subvert single line evals of `exit`:
```
scala> :paste
// Entering paste mode (ctrl-D to finish)
val exit = 1
exit
// Exiting paste mode, now interpreting.
exit: Int = 1
res0: Int = 1
```
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