[perl #89294] @f{qw# a b #} incorrectly warns for some qw delimiters

# New Ticket Created by  "Eric Brine" 
# Please include the string:  [perl #89294]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=89294 >


This is a bug report for perl from ikegami@adaelis.com,
generated with the help of perlbug 1.39 running under perl 5.12.2.


-----------------------------------------------------------------
[Please describe your issue here]


$ perl -c -we'my %f; my @a = @f{qw( a b )}'
-e syntax OK

$ perl -c -we'my %f; my @a = @f{qw! a b !}'
-e syntax OK

$ perl -c -we'my %f; my @a = @f{qw# a b #}'
Scalar value @f{qw# a b #} better written as $f{qw# a b #} at -e line 1.
-e syntax OK

$ perl -c -we'my %f; my @a = @f{qw$ a b $}'
Scalar value @f{qw$ a b $} better written as $f{qw$ a b $} at -e line 1.
-e syntax OK

Bug present in all versions tested: v5.8.9, v5.10.1, v5.12.2, v5.13.10.


[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
    category=core
    severity=low
---
Site configuration information for perl 5.12.2:

Configured by eric at Wed Sep  8 16:01:41 EDT 2010.

Summary of my perl5 (revision 5 version 12 subversion 2) configuration:

  Platform:
    osname=linux, osvers=2.6.26-2-686, archname=i686-linux
    uname='linux fmdev10 2.6.26-2-686 #1 smp tue mar 9 17:35:51 utc
2010 i686 gnulinux '
    config_args='-de -Dprefix=/home/eric/usr/perlbrew/perls/perl-5.12.2'
    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-strict-aliasing -pipe -fstack-protector
-I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-O2',
    cppflags='-fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
    ccversion='', gccversion='4.3.2', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t',
lseeksize=8
    alignbytes=4, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -fstack-protector -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lnsl -ldl -lm -lcrypt -lutil -lc
    perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc
    libc=/lib/libc-2.7.so, so=so, useshrplib=false, libperl=libperl.a
    gnulibc_version='2.7'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
    cccdlflags='-fPIC', lddlflags='-shared -O2 -L/usr/local/lib
-fstack-protector'

Locally applied patches:


---
@INC for perl 5.12.2:
    /home/eric/usr/perlbrew/perls/perl-5.12.2/lib/site_perl/5.12.2/i686-linux
    /home/eric/usr/perlbrew/perls/perl-5.12.2/lib/site_perl/5.12.2
    /home/eric/usr/perlbrew/perls/perl-5.12.2/lib/5.12.2/i686-linux
    /home/eric/usr/perlbrew/perls/perl-5.12.2/lib/5.12.2
    .

---
Environment for perl 5.12.2:
    HOME=/home/eric
    LANG=en_US.UTF-8
    LANGUAGE=
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/home/eric/usr/perlbrew/bin:/home/eric/usr/perlbrew/perls/current/bin:.:/home/eric/bin:/usr/local/bin:/usr/bin:/bin:/usr/games
    PERLBREW_ROOT=/home/eric/usr/perlbrew
    PERL_BADLANG (unset)
    SHELL=/bin/bash

• [perl #89294] @f{qw# a b #} incorrectly warns for some qw delimiters by Eric Brine