What the parser considers a bareword does depend on what it's seen tho. 
use warnings;
use strict;
BEGIN { $INC{'Blah.pm'}=1 }
sub Blah::import { print "@_\n" }
sub abc { 42 }
use Blah -abc; # "Blah -42"
use Blah -def; # *still* "Blah -def"
sub def { 999 }

[download]
Barewords: "A word that has no other interpretation in the grammar will be treated as if it were a quoted string. ... use strict 'subs'; then any bareword that would NOT be interpreted as a subroutine call produces a compile-time error instead."

In reply to Re^2: Why perl with strict allows to use -bareword? by Anonymous Monk
in thread Why perl with strict allows to use -bareword? by hurricup

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.