Having no space between pattern and following word is deprecated at -e line 2.
Having no space between pattern and following word is deprecated at -e line 2 (#1)
    (D syntax)

    You had a word that isn't a regex modifier immediately following
    a pattern without an intervening space.  If you are trying to use
    the /le flags on a substitution, use /el instead.  Otherwise, add
    white space between the pattern and following word to eliminate
    the warning.  As an example of the latter, the two constructs:

     $a =~ m/$foo/sand $bar
     $a =~ m/$foo/s and $bar

    both currently mean the same thing, but it is planned to disallow
    the first form in Perl 5.18.  And,

     $a =~ m/$foo/and $bar

    will be disallowed too.