[Info-vax] puzzled by DCL symbol substitution

[Gotfryd]

On Tue, 17 Jan 2012, Steven Schweda wrote:

> On Jan 17, 5:48 am, Gotfryd Smolik news <smo... at stanpol.com.pl> wrote:
>
>>   Then NLA0: can be shortened to NLA and NL:
>
>   Or "NL0":

  Sure.

>> ...and if only one TTA0: device exists, the TT logical name
>> must be removed (with privileges, as it is a /EXEC one)
>> to check that the "TT:" shortcut also works.
>
>   Uh, how do you get more than one TTA0: device?

  My mistake - "only one TT", thanks for reminder.

>  "TT" is trouble irregardful of how many "TTcu" devices you have.

  I did *NOT* write about any (not existend, of course) correlation
between the TT device and the TT logical, but about the fact, that
as long the TT logname exists, someone may complain that the
shortcut did "not work". Of course, some computers use TX
devices and the difficulty did not exist.

> But, it's easy to avoid logical name translation:

  Agreed.
  But it makes harder to explain a simple dependence :)

  If one does not undestand why "COPY NL:" did work, then
he may look a magic in the underscore, regardless if the
logname translation rules are totally separate from the
RMS shortcut support.
  For clean example, IMVHO it is simpler removing the logname,
and show that TT etc. also works.

   By the way: "show device" is not a good command for
comparison or showing anything about the method used by RMS
for shortened device names, as it has a separate support
(for shortened device names).
  Except listing the available devices itself, of course :)

regards, Gotfryd