I have no plans for doing this.
Rick
On Mon, Aug 6, 2018 at 8:59 AM Rony G. Flatscher <rony.flatsc...@wu.ac.at>
wrote:
> When studying the Regina documentation about "address...with" there are
> three environments, Regina defines (see link and full text after the
> signature):
>
> - "SYSTEM" with aliases "OS2ENVIRONMENT" and "ENVIRONMENT"
> - standard, uses the operating system command line interpreter,
> shell
> - "COMMAND" with aliases "CMD" and "PATH"
> - does not use command line interpreter, shell, but rather the
> environment loads the program directly; fully qualified path can be
> given,
> otherwise PATH environment variable will be searched
> - "REXX" alias "REGINA"
> - creates a new instance of the interpreter to execute a Rexx
> script.
>
> Assuming that over time Regina programs that have been using
> "address...with" are executed with ooRexx, it would be helpful, if the
> ooRexx implementation would allow such Regina programs to be executed
> without any changes, if possible.
>
> Would supporting these Regina "address...with"-environments out of the box
> (with their aliases) be a feasible solution for the ooRexx implemenation?
> ---rony
>
> P.S.: Excerpt from Regina 3.9.1 (April 2015) reference (regina391.pdf, one
> direct link: <ponce.cc/slackware/sources/repo/regina.pdf>), p. 28-29,
> documenting the above mentioned three environments:
>
> ... cut ...
> "Regina uses three kinds of environments. Some have alias names. The
> environment names are:
>
> SYSTEM
> alias OS2ENVIRONMENT
> alias ENVIRONMENT
>
> This is the default environment which is selected at startup. The standard
> operating system command line interpreter will be loaded to execute the
> commands. You can use the built-in commands of the command line
> interpreter, often called shell, or any other program which the command
> line interpreter can find and load.
>
> COMMAND
> alias CMD
> alias PATH
>
> This environment loads the named program directly. You may supply a path
> if this is needed for the current operating system to load the program,
> otherwise Regina uses the standard operating system search rules for
> programs. This is done by searching through the items of the PATH
> system-environment variable in most operation systems. You can't use
> built-in shell functionality like system redirections like you can with
> SYSTEM. Regina's redirections are more powerful and work in either
> environment.
>
> REXX
> alias REGINA
>
> This environment uses a new instance of the Regina interpreter program to
> execute a program. The program has to be a Rexx script. This environment
> has several advantages. The output of a script can be redirected, the
> process is independent and a risk of a crash is minimized when playing with
> external libraries, finally, Regina itself tries to find the correct Rexx
> interpreter by itself and does everything to create a new incarnation of
> Regina.
>
> The definition of Rexx says nothing about which environment is preselected
> when you invoke the interpreter, although TRL defines that one environment
> is automatically preselected when starting up a Rexx script. Note that
> there is no NONE environment in standard Rexx, i.e. an environment that
> ignores commands, but some interpreters implement the TRACE setting ??? to
> accomplish this. Regina uses the environment SYSTEM as the preselected
> environment as mentioned above. More implementation specific details can be
> found in the section implementation specific documentation for Regina.
>
> The list of environments will be saved across subroutine calls; so the
> effect of any ADDRESS clauses in a subroutine will cease upon return from
> the subroutine."
> ... cut ...
>
>
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