Github user jbax commented on the pull request:
https://github.com/apache/spark/pull/12818#issuecomment-216738292
I just read the rest of this ticket. Be careful with the
`setLineSeparator()`. It uses the default OS line separator but that's not
always desired.
By default, this is used to transform the `normalizedLineSeparator` when
writing. If you are running on Windows this will be:
```
normalizedLineSeparator = '\n'
lineSeparator = '\r\n'
```
Then write a value such as `"my \n multi line \n value"`
You will end up with `"my \r\n multi line \r\n value"`
If you actually want to have `"my \n multi line \n value"` you must either:
- set the line separator explicitly to `\n`
- set `normalizeLineEndingsWithinQuotes` to `false`, so whatever is in the
input will be written to the output, without any line ending transformation.
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