Here's what a perl -V gets me:

Summary of my perl5 (5.0 patchlevel 5 subversion 3) configuration:
  Platform:
    osname=bsdos, osvers=4.1, archname=i386-bsdos
    uname='bsdos bsdi.com 4.1 :bsdos_distribution defined: i386'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=undef useperlio=undef d_sfio=undef
  Compiler:
    cc='cc', optimize='-O2', gccversion=egcs-2.91.66 19990314 (egcs-1.
+1.2 release)
    cppflags=''
    ccflags =''
    stdchar='char', d_stdstdio=undef, usevfork=false
    intsize=4, longsize=4, ptrsize=4, doublesize=8
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=1
+2
    alignbytes=4, usemymalloc=n, prototype=define
  Linker and Libraries:
    ld='ld', ldflags =' -L/usr/X11/lib -L/usr/local/lib'
    libpth=/usr/local/lib /usr/shlib /shlib /usr/lib /usr/X11/lib
    libs=-ldl -lm -lc
    libc=/shlib/libc.so, so=so, useshrplib=true, libperl=libperl.so
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynami
+c -Wl,-rpath,/usr/libdata/perl5/5.00503/i386-bsdos/CORE'
    cccdlflags='-fPIC', lddlflags='-shared -x  -L/usr/X11/lib -L/usr/l
+ocal/lib'


Characteristics of this binary (from libperl):
  Built under bsdos
  Compiled at Nov 16 1999 17:30:11
  @INC:
    /usr/libdata/perl5/5.00503/i386-bsdos
    /usr/libdata/perl5/5.00503
    /usr/libdata/perl5/site_perl/i386-bsdos
    /usr/libdata/perl5/site_perl
    /usr/libdata/perl5/site_perl/i386-bsdos/include
    .
[download]

My script is already using the regex that works for me, so this is really a non-issue, just one that I thought was odd.

<-> In general, we find that those who disparage a given operating system, language, or philosophy have never had to use it in practice. <->