Ok. Now we're getting somewhere. In <code> tags, your code looks like this:

foreach (@words) {
  $line =~ s/([%\d])$_([%\d])//g;
  print "$line\n";
}

[download]

So the regex is saying this:

Look for either a percent sign or a digit (which will be captured in $1) followed by the string in $_ followed by another percent sign or a digit (which will be captured in $2)

And if all that is found then it's replaced by an empty string.

So as your data doesn't appear to contain any digits or percent signs, then none of that is ever going to match. I think that what you actually wanted was far simpler.

foreach (@words) {
  $line =~ s/\b$_\b//g;
  print "$line\n";
}

[download]

And I think you may want to move the print statement out of the loop - tho' it might be there for debugging purposes.

See perlretut for a good introduction to regexes.

--
<http://dave.org.uk>

"The first rule of Perl club is you do not talk about Perl club."
-- Chip Salzenberg

In reply to Re^3: broken regex by davorg
in thread broken regex by elwood

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.