Github user andrewor14 commented on the pull request:
https://github.com/apache/spark/pull/1845#issuecomment-52820004
@vanzin Yeah, the tricky thing is not with Bash but with Windows. Even the
least complicated logic becomes many tens of lines of code. In your example,
you're using `\r\n` as the delimiter, but it's possible that the user's command
may contain these characters as well so we need to do more escaping there. I'm
not saying that it's simply impossible; I just mean that it will be complicated
because we have to parse it again in Bash. The original form of this PR went
down that road and it was significantly more complicated then, and doing the
same in Windows will be even more complex and error prone.
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