/ca|cb/ is same as /c[a|b]/.
But when I convert /.*\n|.*$/ to /.*[\n|$]/, the second Regexp doesn't match 'aaa' while the first does.
So how to make terminal symbol($) work in a character group([])?
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djy
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2`/ca|cb/` is **not** same as `/c[a|b]/` – vrintle Nov 08 '18 at 12:44
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1`/ca|cb/` yields the same results as `/c[ab]/`, but these patterns differ in effeciency, too. – Wiktor Stribiżew Nov 08 '18 at 12:45
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2You cannot put assertions inside a character group, as they aren't characters. – Sebastian Proske Nov 08 '18 at 12:45
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Question solved, thank you. – djy Nov 08 '18 at 12:51