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<?php echo preg_replace('/(?!dog)/', '<$0>', 'where my dog is now?');
Output for git.master, git.master_jit, rfc.property-hooks
<>w<>h<>e<>r<>e<> <>m<>y<> d<>o<>g<> <>i<>s<> <>n<>o<>w<>?<>

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