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From: Martin Krischik <krischik@users.sourceforge.net>
Newsgroups: comp.lang.ada
Subject: Re: Ada.Command_Line and wildcards
Date: Tue, 27 Feb 2007 08:11:34 +0100
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Simon Wright schrieb:
> Martin Krischik <krischik@users.sourceforge.net> writes:
> 
>> Actually the VMS *could* have done that as foreign commands or
>> symbols are defined using a meta language called CLD (Command
>> Language Definition) [1].
> 
> Actually you used CLD _or_ foreign commands. I forget why I used
> foreign commands almost exclusively -- I guess the CLD compiler wasn't
> available or wasn't obviously documented when I started programming on
> VMS (1982, I think).

Maybe because:

$ foo :== $sys$sysexe:foo.exe

is easier to begin with then:

$ DEFINE VERB FOO
$    IMAGE "SYS$SYSEXE:FOO.EXE"
$    QUALIFIER BAR

However the 2nd option will tell the command line processor that an 
option /BAR exists.

Sadly VMS never really used CLD to it's full potential. Just imagine CLD 
combined with bash'es advanced comandline completion! Not only commands 
and files could be completed - options as well.

Working with VMS always makes me sad - for all the missed opportunities 
the great VMS foundation could have made possible.

Martin