What's the difference between one-dash and two-dashes for command prompt parameters? was closed as 'not constructive'. I disagree. There is a difference, as explained on Unix.SE:

A double dash (--) is used in bash built-in commands and many other commands to signify the end of command options, after which only positional parameters are accepted.

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I'd reopen it, but not based on the question you linked to – it deals about the trailing double dash, not the one used for actual parameters. –  slhck Dec 28 '11 at 8:11
    
Ah. I misread the question. I was only focused on the double dash. –  iglvzx Dec 28 '11 at 8:19
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up vote 1 down vote accepted

It was reopened. Thank you, ♦!

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