Fix for gnu xargs and send --verbose to other commands #672
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There's two things here:
When passing
-vor--verboseto the push, it only propagates to the first crane command. This adds it to the tag pushes as well to help with debugging.When the tags file is empty, GNU xargs was causing a failure. This is because GNU xargs executes the command once even if the input is empty, so
cranewas raising an exception about the wrong number of arguments. Passing-rwill give xargs the same behavior as BSD xargs. in BSD xargs,-ris a no-op.