What does “--” (double-dash) mean?
There are many command line tools that take a single "--" argument. For example:
gem install mysql -- —–with-mysql-config=/usr/local/mysql/bin/mysql_config
It seems to be used as some kind of separator. Does it have a special meaning? Is it a commonly used idiom? If so, what's its purpose?
PS: I'm not talking about arguments of the form
--argument, I'm talking about when you have a
-- followed by white characters and other arguments.