[plt-scheme] mzscheme --script and console output

From: Matthew Flatt (mflatt at cs.utah.edu)
Date: Mon Jul 21 15:29:44 EDT 2008

At Mon, 21 Jul 2008 14:03:39 -0500, "Grant Rettke" wrote:
> Question: being that all of the code is now in modules, the right way
> to run the program is this?
> mzscheme --require [some file with the module]
> When you run mzscheme like this, to what command line arguments is it
> equivelant?
> mzscheme [some file with the module]
> Because both of the previous command line options appear to do the same thing.

Normally, you want just

 mzscheme <file>

which expands to

 mzscheme --require-script <file>

The command

 mzscheme --require <file>

turns out to be the same, but only because there are no extra
command-line arguments. If you write

 mzscheme --require <file> -x

when `-x' is treated as a flag to `mzscheme', but with 

 mzscheme --require-script <file> -x

then `-x' is sent on as a flag to the program.

More generally, `--require' is meant to be used in combination with
other command-line flags to `mzscheme', such as `--repl' or multiple
`--require's. Use `--require' when you want to "script" the start-up
process with multiple steps, instead of just running a program.


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