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<?php $input = [ '<p>test:</p>', '<p>test: foo</p>', '<p>foo:</p>', '<p>: foo</p>', '<p>test </p><p>:</p>', ]; foreach ($input as $val) { echo(preg_replace('/(<p>)([^<]+?:)(.*)/', '$1<strong>$2</strong>$3', $val)); echo("\n"); }
Output for rfc.property-hooks, git.master, git.master_jit
<p><strong>test:</strong></p> <p><strong>test:</strong> foo</p> <p><strong>foo:</strong></p> <p>: foo</p> <p>test </p><p>:</p>

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