Anyway, here's a quick hack to show the heuristic: 

#!/usr/bin/perl -w
use strict;

for (qw(mcginley macgee develera)) {
    print "$_ => ".handle_caps($_)."\n";
}

sub handle_caps {
    # this assumes irish capitalisation!

    my $name = ucfirst(shift);
    for (qw(Mc Mac)) {  # always ok
        $name =~ s/^$_(.*)/$_\u$1/;
    }
    for (qw(De)) {      # may not be followed by [aoeiu]
                        # ?? don't know enough irish 
                        # for this rule ;-)

        $name =~ s/^$_([^aoeiu].*)/$_\u$1/;
    }
    return $name;
}

[download]

In reply to Example by Joost
in thread Handling caps for surnames with capitals in the middle (was: Irish Surnames) by Baz

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.