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Newsgroups: comp.lang.ada
Date: Tue, 19 Feb 2019 16:01:44 -0800 (PST)
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Subject: Re: Error in draft 17 grammar
From: Lucretia <laguest9000@googlemail.com>
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Xref: reader01.eternal-september.org comp.lang.ada:55595
Date: 2019-02-19T16:01:44-08:00
List-Id: <comp.lang.ada>

On Tuesday, 19 February 2019 23:35:03 UTC, Randy Brukardt  wrote:
> > 4.3.5:
> > key_choice ::= key_expression {| discrete_range}
> >
> > ?
> 
> No, it's a stray '}'. Just delete it. If you've ever looked at the source 
> files, they're chock full of square and curly brackets (mainly because the 
> other delimiters that Scribe allowed appear in too much Ada text to use them 
> frequently -- Scribe doesn't have a quoting mechanism, rather it has six 
> pairs of delimiters, and you have to put a pair that isn't used in the 
> actual text. Yuck.) So these happen periodically, and syntax is the worst 
> (since it uses ] and } and ) and might use >, or " or '). I haven't yet 
> found something that uses something from all six pairs, but it wouldn't 
> surprise me if I did.
> 
> Anyway, it's best to send these sorts of comments directly to me (using the 
> agent e-mail) or to the Ada-Comment list. Best not to hope I find them 
> somewhere else.

I don't know what Scribe is, but it sounds ancient. Have you ever thought about updating to something else like ASCIIDoc(tor)?

Also, as you've started to add '[' and ']' to the grammar, any change of doing the same for ',' ';' '(' ')' '=>' etc? It'd make the grammar clearer.