Github user tsudukim commented on the pull request:
https://github.com/apache/spark/pull/2612#issuecomment-57606210
Generally, using LF as EOL character of *.cmd files may cause some troubles.
For example, when the *.cmd file includes LF and multibyte character, some
characters of head of line might be removed internally for some reason. The
problem @sarutak mentioned seems to be same as this.
In another case, "goto" may go to wrong place. This problem occured once in
ruby-lang project. Their build script for Windows happened to be LF, and they
faced "strange behaviour of cmd.exe".
https://bugs.ruby-lang.org/issues/10145
I know *.cmd with LF runs seemingly well in many cases, but sometimes cause
inexplicable trouble because LF is defenetely not the proper EOL character of
Windows *.cmd files.
So if possible, I think we should use CRLF as EOL to avoid such trouble.
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