Argon: an alternative parser for command-line arguments

[Jim Balter]

On Thursday, 3 March 2016 at 09:33:38 UTC, Johannes Pfau wrote:
> Am Thu, 03 Mar 2016 09:09:38 +0000
> schrieb Markus Laker <markus.laker at gmail.com>:
>
>> * It can open files specified at the command line.  It can do 
>> a simplified version of what cat(1) does and many Perl 
>> programs so, and open a file specified by the user or fall 
>> back to reading from stdin.  There's also a convention that 
>> the user can type "-" to mean stdin or stdout, depending on 
>> the open-mode you specify.
>
> The rest of this list sounds quite good, but please reconsider 
> automatically opening files: 
> https://media.ccc.de/v/32c3-7130-the_perl_jam_2

No one wants to watch a 40 minute video just to find out what 
your point is.

>
> I guess the scenario can't happen in D as our open file methods 
> won't execute programs (!) but still....

But still? What other problem is there? What does it matter 
whether the command line parser opens the file or some other part 
of the program does?