What about

$someRegex = "(aA|Aa).*";

...what effect should that have? Or what about

$someRegex = "(?!aa)[Aa]+.*"

Basically, what you're asking for is not feasible in the general case. If you know that $someRegex will always be very simple, it becomes tractable; you can use something like YAPE::Regex to parse the regex and match elements thereof to the extracted string to determine which characters' case needs to change. But for arbitrary regexes, it gets hard quickly.

Depending on what you actually need this for, you may find it simpler to request both a regex and a case template, or to have your input take the form of a restricted pattern that you yourself can then translate into a regex and a case template.

In reply to Re^3: regex capture case by Porculus
in thread regex capture case by rmflow

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.