Help needed, what is the meaning of a >> -b | b ?

Juan Dent <[email protected]> Sat, 17 Oct 2020 23:57:27 +0000

Newsgroups	gmane.comp.parsers.spirit.general
Message-ID	<BYAPR14MB30772A713CAF775B65633B469B000@BYAPR14MB3077.namprd14.prod.outlook.com>

Hi there,

I am stuck here: What is the meaning of a >> -b | b ?

Is it match input against a then match 0 or 1 time b or match b??

Makes no sense to me!

Regards,
Juan Dent

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