Re: Ada.Command_Line.Argument_Count question

[John McCabe <john@nospam.assen.demon.co.uk>]

On Tue, 15 Sep 2009 22:58:49 +0200, Thomas L�cke <"tl at ada-dk.org">
wrote:

>The RM has this to say about Argument_Count:
>
>"If the external execution environment supports passing arguments to a 
>program, then Argument_Count returns the number of arguments passed to 
>the program invoking the function. Otherwise it returns 0. The meaning 
>of �number of arguments� is implementation defined."
>
>I'm wondering what that last sentence mean? Is the RM trying to tell me 
>that Argument_Count cannot be trusted to yield the same result on 
>different systems (Unix, BSD, Windows, Linux and so on)?
>
>Or am I missing the point?

Are you also thinking of whether the program itself counts as an
argument?

For example if, on the command line, I type:

prog1.exe a b c

Does Argument_Count() return 3 or 4? I haven't looked at this
paragraph in detail, or what surrounds it, but "the number of
arguments passed to the program invoking the function" sounds a bit
vague. Is the "program invoking the function" the shell, or the
program you're running?

John