hello,
i'm trying to extract a pattern from a string, hold it in a variable, and then use this variable in a substitution.

in the code below, i extract $match from $content(which is a string holding the entire file contents).

i then extract $varmatch from $match, which i try to use in a substitution thus:
$match=~ s/$varmatch//g;
to remove $varmatch from $match.
i then insert it at another point in $match.

the strange thing is, i can use $varmatch and insert its value into the containing string ($match=~ s/textarea/testinsert$varmatch/g;), but can't use it to remove its value from the containing string.

i'm still pretty new to the wonders of perl, so i may be missing something obvious.

oh, and i've tried using pos() to position the cursor back to the beginning of $match, (pos $match = 0; ) but to no avail.

any monkly wisdom on this received with gracious thanks :)
Z.
while ($content =~ m/(<textarea.*textarea>)/sg) { my $match = $&; my $varmatch; print "match: before ..... $match\n"; if( $match =~ m/(<%=.*?%>)/sg){ $varmatch = $1; print "varmatch: $varmatch\n"; pos $match ; #cut var tag $match=~ s/$varmatch//g; print "match: after .... $match\n"; $match=~ s/textarea/testinsert$varmatch/g; print "match: after testinsert .... $match\n"; ...program continues here program output: ---------- perl ---------- varmatch: <%=foo::doSomething%> match: before .... <textarea class="FolderTxtArea" name="blah"><%=foo: +:doSomething%></textarea> match: after .... <textarea class="FolderTxtArea" name="blah"><%=foo: +:doSomething%></textarea> match: after testinsert .... <testinsert<%=foo::doSomething%> ...

In reply to can't get $& to remove value in a substitution by zusuki-san

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.