Re: Ann: SWI-Prolog 6.5.2

On 08/22/2013 02:31 PM, Kilian Evang wrote:
> Hi Jan, all,
> 
> On 22-08-13 14:12, Jan Wielemaker wrote:
>>  * MODIFIED: The =argv= Prolog flag now only contains _unprocessed_
>>    commandline arguments.  This change is primarily for improving
>>    compatibility with other systems (e.g., YAP, SICStus).  A new flag,
>>    called =os_argv= provides the original complete list of arguments.
>>
>>    Unfortunately, some code must be updated to deal with this change. A
>>    hack to restore compatibility is to call the following before anything
>>    else in the application:
>>
>>      ==
>>      :- current_prolog_flag(os_argv, Argv),
>>         set_prolog_flag(argv, Argv).
>>      ==
> 
> or, to maintain compatibility with older SWIPL versions:
> 
> :- current_prolog_flag(os_argv, Argv)
>    -> set_prolog_flag(argv, Argv)
>     ; true.

Not sure I get this.  If you want to run code for the new argv on an old
Prolog, so something like this (incomplete, but will suffice for most):

:- current_prolog_flag(argv, OsArgv),
   set_prolog_flag(os_argv, OsArgv),
   (   append(_, [--|Argv], OsArgv)
   ->  set_prolog_flag(argv, Argv)
   ;   OsArgv = [_Exe|Argv]
   ->  set_prolog_flag(argv, Argv)
   ).

	Cheers --- Jan

P.s.	Added the MacOS application to the normal download page.
	Note that this version also contains the commandline
	tools.