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Merge ruby/ruby@8f7c360
Merge ruby/ruby@8de2622
What was the end-user or developer problem that led to this PR?
Dir.mktmpdirconcatenates a random base-36 number separated by "-", so may generate pathnames containing "-j4" or "-j2".What is your fix for the problem, implemented in this PR?
Match including a preceding space, " -j4"/" -j2", as an option.
Make sure the following tasks are checked