[r6rs-discuss] [Formal] "#! /usr/bin/env" is not "portable." It's Unix-specific.

From: Ben Goetter <goetter>
Date: Wed Nov 15 12:08:21 2006

> R5.91RS codifies this practice: see section 3, page 10, second last
> paragraph before 3.1, as well as 3.2.2.

This section of 5.91 seems to provide an escape. Make #!/usr/bin/env
indicate an "extension to the standard lexical syntax," meaning "skip
the first line of this file."

That provides the necessary Unix trampoline magic for all the Unix
users, including possible backslash brain damage for Unices that need a
second line of command line parameters in their scheme_script, while
leaving Unix shell script magic out of environments that don't need
such. Non-Unix environments would see #!/usr/bin/env as just another
lexical extension not intended for their environment.
Received on Wed Nov 15 2006 - 12:07:44 UTC