OK, there's probably somthing simple I'm missing here, but...
1. C<use 5> or C<use 6> (and, in general, C<use <vervect>>) import the
definitions of the language as it existed at that time (more or less), or
die if they can't. (Or run through p52p6, or whatever.)
Advantage: matches existing precedent. The real perl 5 won't choke on
it, and will even give the right error.
2. If the name of the executable (from argv[0] or the beginning of #!)
contains "perl.?[56]", then there is an implicit C<use 5> or C<use 6>.
(And why not any other version number? Just don't ship them in core,
please!)
Advantage: reasonably non-intrusive.
3. Otherwise, assume perl 6.
Advantage: we require trivial changes in existing scripts instead of
baggage we'll be carrying around forever.
If you object to that much change as an admin, feel free -- install perl6
under the name "perl6", symlink perl5 to it, and make a symlink from perl
to perl5. (This would work only if we had #2 follow symlinks until it
saw a "perl5" or "perl6", which is probably fine).
If you don't have symlinks on your system, then get a better system, use
a site-policy file, or bite the bullet and change the #! lines.
-=- James Mastros
--
The most beautiful thing we can experience is the mysterious. It is the
source of all true art and science. He to whom this emotion is a stranger,
who can no longer pause to wonder and stand wrapt in awe, is as good as dead.
-=- Albert Einstein
AIM: theorbtwo homepage: http://www.rtweb.net/theorb/
