Conversely, you could use \B to match a non-boundary. This would still take into account the beginning of the string, while also allowing for spaces within the string. 
$agent = 'PerlBeginnerPerl AndAnother';
$agent =~ s/\B([A-Z])/ $1/g;

# Produces 'Perl Beginner Perl And Another'

$agent = 'PerlBeginnerPerl AndAnother';
$agent =~ s/\B([A-Z])/ $1/g;

# Produces 'Perl Beginner Perl  And Another'

[download]
I realize that spaces within the string is probably outside the scope of the original question, but \B covers his bases and might be a little easier for a beginner to grok than a look-ahead.

-- grummerX

In reply to Re: Re: Search for a character in CAPS by grummerX
in thread Search for a character in CAPS by c_lhee

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