[perl #108776] ‘no feature’ in 5.16

# New Ticket Created by  Father Chrysostomos 
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# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=108776 >


Should ‘no feature’ mean enable the default feature?

Currently, ‘no feature’ disables all features, including array_base, so any features added retroactively to old bundles, to keep old features on for old bundles, will be disabled by ‘no feature’.

This makes ‘no feature’ provide different semantics in each new Perl version.

‘no Modern::Perl’ already does ‘no feature’.  So that means it disables $[.  Should Modern::Perl be changed, or should feature.pm be changed?
---
Flags:
    category=core
    severity=high
---
Site configuration information for perl 5.15.6:

Configured by sprout at Mon Jan 16 08:41:41 PST 2012.

Summary of my perl5 (revision 5 version 15 subversion 6) configuration:
  Commit id: bdd2b37b5c6133a3b8647bb19d63f9598457d4d4
  Platform:
    osname=darwin, osvers=10.5.0, archname=darwin-2level
    uname='darwin pint.local 10.5.0 darwin kernel version 10.5.0: fri nov 5 23:20:39 pdt 2010; root:xnu-1504.9.17~1release_i386 i386 '
    config_args='-de -Dusedevel -DDEBUGGING'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=undef, usemultiplicity=undef
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=undef, use64bitall=undef, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='cc', ccflags ='-fno-common -DPERL_DARWIN -DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include',
    optimize='-O3 -g',
    cppflags='-fno-common -DPERL_DARWIN -DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
    ccversion='', gccversion='4.2.1 (Apple Inc. build 5664)', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='env MACOSX_DEPLOYMENT_TARGET=10.3 cc', ldflags =' -fstack-protector -L/usr/local/lib'
    libpth=/usr/local/lib /usr/lib
    libs=-ldbm -ldl -lm -lutil -lc
    perllibs=-ldl -lm -lutil -lc
    libc=, so=dylib, useshrplib=false, libperl=libperl.a
    gnulibc_version=''
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=bundle, d_dlsymun=undef, ccdlflags=' '
    cccdlflags=' ', lddlflags=' -bundle -undefined dynamic_lookup -L/usr/local/lib -fstack-protector'

Locally applied patches:
    

---
@INC for perl 5.15.6:
    /usr/local/lib/perl5/site_perl/5.15.6/darwin-2level
    /usr/local/lib/perl5/site_perl/5.15.6
    /usr/local/lib/perl5/5.15.6/darwin-2level
    /usr/local/lib/perl5/5.15.6
    /usr/local/lib/perl5/site_perl
    .

---
Environment for perl 5.15.6:
    DYLD_LIBRARY_PATH (unset)
    HOME=/Users/sprout
    LANG=en_US.UTF-8
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin:/usr/local/bin
    PERL_BADLANG (unset)
    SHELL=/bin/bash

• [perl #108776] ‘no feature’ in 5.16 by Father Chrysostomos via RT
• [perl #108776] ‘no feature’ in 5.16 by Father Chrysostomos
• Re: [perl #108776] ‘no feature’in 5.16 by Ricardo Signes
• [perl #108776] ‘no feature’ in 5.16 by Father Chrysostomos via RT