Fixed in commit 360d0ac. -- jeffrey
On 01/10/2014 10:41 PM, Ruslan Shvedov wrote:
On Sat, Jan 11, 2014 at 8:33 AM, Jeffrey Kegler
<[email protected]
<mailto:[email protected]>> wrote:
Let me think this one over. I leave features undocumented
sometimes for various reasons: to keep my options open, because I
have not had time to test them, etc.
Sure, I'd volunteer to patch the doc and write a test and submit a
pull request if need be.
If it's in metag.bnf, that suggest that I think of it as
supported. For two reasons: Frist, I consider metag.bnf as a
semi-public example. And second, if it goes away, because of the
circular dependency, I am in big trouble. -- jeffrey
Got it, thanks for explaining. --ruslan
On 01/10/2014 10:26 PM, Ruslan Shvedov wrote:
As in /sequence ::= item+ separator => *[,]*. /The doc says it's
a no-no, but the attached test passes. Which of them needs
patching? :)
What happened was I tried /sequence ::= item+ separator => //','/
and it didn't work, but then I saw /separator => *[,] */in
metag.bnf and thought it can be useful.
To summarise, unless it's undocumented on some special purpose, I
think allowing character classes and single-quoted strings as
separator values could be a good thing.
[1] The separator keyword is only valid for a quantified right
side, and its value must be a symbol of the grammar.
—
https://github.com/jeffreykegler/Marpa--R2/blob/master/cpan/pod/Scanless/DSL.pod
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