Good point, but here is what it says about asterisks:
> Within productions, alternatives are separated by a vertical bar ('|'), and typically listed on separate lines. Optional symbols are enclosed in square brackets ('[' and ']'). Symbols may also be grouped using
parenthesis. The plus sign ('+') following a symbol or group of symbols indicates one or more repetitions; an asterisk ('*') indicates zero or more repetitions.
So the standard is still "wrong" about [|] :-)
Best,
Christoph
Von: Squeak-dev <[hidden email]> im Auftrag von John Pfersich via Squeak-dev <[hidden email]>
Gesendet: Donnerstag, 13. Februar 2020 12:09:54
An: The general-purpose Squeak developers list
Betreff: Re: [squeak-dev] [:x] considered improper (was Re: The Inbox: ShoutCore-ct.69.mcz)
Btw the standard uses a modified EBNF to describe the productions. That’s explained in the first part of the standard. Everything cascades in the standard, so you really need to commit to reading the whole standard, not the Wikipedia article. It’s a pain,
but I’ve found it useful to do so. But then I’ve been a computer geek for 48 years, and this type of stuff is what I get paid to do. So nitpicking is my job.
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> The explanation is that, according to Wikipedia, an asterisk in the BNF stands for "0 or more times". So provided that there is not a mistake in the official standard document, shouldn't we support the above example?
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