Though ... there is one "lighter" version to build your replacement dynamically.

eval the replacement-string into a sub, and apply just one /e at the s///

  DB<137> $rep = '<$1>'

  DB<138> eval qq( sub rep { "$rep" } )

  DB<139> p "abc" =~ s/(.)/rep()/rge
<a><b><c>
  DB<140>

[download]

This will give you more control about what is happening, since you can use B::Deparse to check the replacement string before executing it.

Like this you have at least a chance to reject dubious code.

  DB<140> p B::Deparse->new('-q')->coderef2text(\&rep)
{
    use feature 'current_sub', 'evalbytes', 'fc', 'postderef_qq', 'say
+', 'state', 'switch', 'unicode_strings', 'unico\
de_eval';
    '<' . $1 . '>';
}
  DB<141>

[download]

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re^4: Regexp substitution using variables by LanX
in thread Regexp substitution using variables by MikeTaylor

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.