Many thanks for your efforts

I added a test suggested by kwaping above. 

#!/usr/bin/perl

use strict;
use warnings;
 
my $str = q|cat’s|;
printit($str, 'original');
 
(my $str1 = $str) =~ s/\x092/'/;
printit($str1, 'hex only two nybbles');
 
(my $str2 = $str) =~ s/\x92/'/;
printit($str2, 'seems good here');
 
(my $str3 = $str) =~ s/\x{092}/'/;
printit($str3, 'seems good here');
 
(my $str4 = $str) =~ tr/\x{092}/'/d;
printit($str4, 'seems good here');

(my $str5 = $str) =~ s/’/'/;
printit($str5, 'added');
 
sub printit {
        my ($v, $msg) = @_;
        my $h = unpack "H*", $v;
        $h =~ s/(..)/0x$1 /g;
        print "$h\t$v\t$msg\n";
}

__END__

0x63 0x61 0x74 0xe2 0x80 0x99 0x73     cat’s    original
0x63 0x61 0x74 0xe2 0x80 0x99 0x73     cat’s    hex only two nybbles
0x63 0x61 0x74 0xe2 0x80 0x99 0x73     cat’s    seems good here
0x63 0x61 0x74 0xe2 0x80 0x99 0x73     cat’s    seems good here
0x63 0x61 0x74 0xe2 0x80 0x99 0x73     cat’s    seems good here
0x63 0x61 0x74 0x27 0x73     cat's    added

[download]

In reply to Re^2: Removing \x092 with a regex by wfsp
in thread Removing \x092 with a regex by wfsp

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.