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<?php if (preg_match('#^(GIR ?0AA|[A-PR-UWYZ]([0-9]{1,2}|([A-HK-Y][0-9]([0-9ABEHMNPRV-Y])?)|[0-9][A-HJKPS-UW]) ?[0-9][ABD-HJLNP-UW-Z]{2})$#i', "OL10 4RN")) { echo "true"; } else { echo "false"; }
Output for git.master, git.master_jit, rfc.property-hooks
true

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