Wouldn't it be easier to do 
       join ' ', map {ucfirst} split / /, shift;

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Can't use ucfirst when you're redefining it, can you?
Update: Actually, you can!
I'll take my Bonehead Award anytime it's ready. Make it: 
        join ' ', map { s/^(.)/\U$1/; $_ } split / /, shift

[download]
That should work, right, since it's using uc instead of ucfirst.

To do it with pure s///: 

       (my $f=shift)=~s/(^| )(\w)/$1\U$2/g;
       # Doing it with lookbehind gets a little ugly:
       # s/(?:(?<=^)|(?<= ))(\w)/\U$1/g;
       $f;

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The PerlMonk tr/// Advocate

In reply to Re: Globally change ucfirst in mod_perl by Roy Johnson
in thread Globally change ucfirst in mod_perl by dragonchild

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