this breaks things that should obviously work. take the distributive law: (a|ab)(c|b) and (a|ab)c|(a|ab)b are logically the same pattern - you can verify this yourself by just expanding the terms. but in PCRE, the first matches ab in the input abc, while the second matches abc. two equivalent patterns, two different results.
“The initial toll is four killed and six wounded, and work is underway to rescue families from under the rubble,” Lebanon’s state-run National News Agency said.
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