Distinguishing CLI from GUI

Björnke von Gierke bvg at mac.com
Mon Jun 13 09:57:34 EDT 2011


err, sorry for being unclear. I mean it's a bug as in, it should work as you expected. in addition, there's no workaround that i'd know of.


On 13 Jun 2011, at 15:50, Richard Gaskin wrote:

> 
> "Bug" in the documentation, or the implementation?
> 
> Any workaround to determine if launched facelessly?
> 
> --
> Richard Gaskin
> Fourth World
> LiveCode training and consulting: http://www.fourthworld.com
> Webzine for LiveCode developers: http://www.LiveCodeJournal.com
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> 
> 
> Björnke von Gierke wrote:
>> 
>> bug
>> 
>> On 13 Jun 2011, at 14:41, Richard Gaskin wrote:
>> 
>>> As Todd Geist quoted here earlier, in the Dictionary entry for "$" it says:
>>> 
>>>   If you start up the application from the command line (on OS X,
>>>   Unix or Windows systems), the command name is stored in the
>>>   global variable $0 and any arguments passed on the command line
>>>   are stored in numbered variables starting with the $ character.
>>>   For example, if you start the application by typing the following
>>>   shell command:
>>> 
>>>     myrevapp -h name
>>> 
>>>   then the global variable $0 contains "myrevapp" (the name of the
>>>   application), $1 contains "-h", and $2 contains "name".
>>> 
>>> In my tests here, it seems this is only partially correct:  $0 contains the app name from the command line ("myrevapp" in their example), but $1 contains the "name" portion after the "-h" option flag, and the flag itself does not appear in any $ variable.
>>> 
>>> I have an app in which I'd like to have two different behaviors, depending on whether it's being run from the command-line or as a GUI.
>>> 
>>> This would be easy if the engine worked as described in the Dictionary so I could easily detect if the user launched it with "-ui", but it seems the option flags are not being passed to the application, though everything that doesn't begin with "-" is.
>>> 
>>> So my question is two-fold:
>>> 
>>> 1. I've tested this on Windows and Linux and get identical behavior, in which the "-" flags aren't present in the "$" vars.  Can anyone here confirm this on Linux, Win, or OS X?
>>> 
>>> 2. If this is indeed a documentation bug and what I see in my tests is what happens for everyone, how can I determine whether the app was launched with "-ui" or not?
>>> 
>>> --
>>> Richard Gaskin
>>> Fourth World
>>> LiveCode training and consulting: http://www.fourthworld.com
>>> Webzine for LiveCode developers: http://www.LiveCodeJournal.com
>>> LiveCode Journal blog: http://LiveCodejournal.com/blog.irv
>>> 
> 
> 
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