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<?php $subject = " test test2 test3"; $subject = preg_replace("\G(^ |\n )", "\t", $subject); echo $subject;
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_replace(): Delimiter must not be alphanumeric, backslash, or NUL in /in/7oYsT on line 5

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