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由 Richard Levitte 提交于
In constructions such as 'for x in $(MAKEVAR); do ...', there's the possibility that $(MAKEVAR) is en empty value. Some shells don't like that, so introduce a dummy value that gets discarded: for x in dummy $(MAKEVAR); do if [ "$$x" = "dummy" ]; then continue; fi Closes RT#4459 Reviewed-by: NRich Salz <rsalz@openssl.org>
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