ARROW-4537: [CI] Suppress shell warning on travis-ci #3623
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mrkn
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xhochy
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+1, thanks!
Can you address the one line where you did the reverse?
ci/travis_before_script_cpp.sh
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Shouldn't the quotes stay here as-is?
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It's my mistake. I reverted this change. Thanks for catching this.
Enclose optional shell variable names by double quotations to suppress shell warnings that is like below: ``` +'[' == 1 ']' /home/travis/build/apache/arrow/ci/travis_before_script_cpp.sh: line 81: [: ==: unary operator expected ```
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Enclose optional shell variable names by double quotations to suppress shell warnings that is like below: