Cog: command-line on Macs

>
> I am running image like that:
>
> /Users/sig/Downloads/Cog.app/Contents/MacOS/Croquet
> /Users/sig/projects/pharo/generator.image zzz arg1 arg2 arg3
>
>
> and here what i got:
>
>
> (0 to: 10) collect: [:i |
> Smalltalk  getSystemAttribute: i ])
>
>
> #('/Users/sig/Downloads/Cog.app/Contents/MacOS/Croquet'
> '/Users/sig/projects/pharo/generator.image' 'zzz' 'arg1' 'arg2' 'arg3'
> nil nil nil nil nil)
>
>
> but:
>
> (0 to: 10) collect: [:i |
> Smalltalk  getSystemAttribute: 0-i ]
>
> #('/Users/sig/Downloads/Cog.app/Contents/MacOS/Croquet' 'arg1' 'arg2'
> 'arg3' nil nil nil nil nil nil nil)
>
> where is my pony named zzz?
>
>
> Here the description from getSystemAttribute:
>
> -1000...-1 - command line arguments that specify VM options
> 0 - the full path name for currently executing VM
> (or, on some platforms, just the path name of the VM's directory)
> 1 - full path name of this image
> 2 - a Pharo document to open, if any
> 3...1000 - command line arguments for Pharo programs
>
>
> so, i expected that it does mangling for attribute num > 0 , but for
> negative ones, i expected them to be returned as is..
> instead there is something weird there.
>
> Especially when running headless.. Cog doing hard work with removing a
> VM options from my sight.. so image can't determine if i run headless
> or not, based on command line arguments..
>
> Here the command line:
>
> /Users/sig/Downloads/Cog.app/Contents/MacOS/Croquet -headless
> /Users/sig/projects/pharo/generator.image headless.st 1 2 3
>
>
> here the script (headless.st):
>
> (FileStream forceNewFileNamed: 'test' )
> nextPutAll:
> ((0 to: 10) collect: [:i |
> Smalltalk  getSystemAttribute: i ]) asString ;
> cr;lf;
> nextPutAll:
> ((0 to: 10) collect: [:i |
>         Smalltalk  getSystemAttribute: 0-i ]) asString ;
> cr;lf;
>
> close.
>
> Smalltalk snapshot: false andQuit: true.
>
>
> and here the script's output (test) :
>
> cat test
> #('/Users/sig/Downloads/Cog.app/Contents/MacOS/Croquet'
> '/Users/sig/projects/pharo/generator.image' 'headless.st' '1' '2' '3'
> nil nil nil nil nil)
> #('/Users/sig/Downloads/Cog.app/Contents/MacOS/Croquet' '1' '2' '3'
> nil nil nil nil nil nil nil)
>
>
> P.S. Cocoa VM completely ignoring -headless switch.
>
>
> --
> Best regards,
> Igor Stasenko AKA sig.