Perl 6 - the future is here, just unevenly distributed

IRC log for #marpa, 2017-11-17

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All times shown according to UTC.

Time Nick Message
00:16 idiosyncrat Demat!
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02:56 Topic for #marpa is now Start here: http://savage.net.au/Marpa.html - Code paste/run: https://f.perlbot.pl/#marpa - Jeffrey's Marpa site: http://jeffreykegler.github.io/Marpa-web-site/ - IRC log: http://irclog.perlgeek.de/marpa/today - Youtube channel: https://www.youtube.com/channel/UCYKVfGBtfTqbs1JdYq-dc5g
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04:26 jdurand Re https://irclog.perlgeek.de/marpa/2017-11-16#i_15455144 - it is probably https://github.com/jddurand/MarpaX--Import instead, not finished but was near the end of being ready -,
04:28 jdurand Though nowadays I'd rewrite it differently
04:28 idiosyncrat jdurand: Thanks.  And nice to hear from you.
04:29 idiosyncrat aindilis: The above was Jean-Damien's response.  He spent a lot of time looking at the issue of trying to get standards BNF to parse.
04:33 jdurand At that time I went to the conclusion that, although it is technically always possible to parse an (A|E|xxx)?BNF, hoping this will work immediately is hopeless: I have seen almost no grammar on the web that is correct, absolutely impressive but true...
04:34 idiosyncrat jdurand: Yes.  In yesterday's backlog you can see me trying to explain the reasons for this to aindilis.
04:34 jdurand Yep, backlogged that -;
04:35 idiosyncrat The tendency is to say, "Hey, it's in the standard so it must be right!"
04:35 idiosyncrat And it is "right", but for a very limited sense of "right", one which does not allow auto-generation of grammars.
04:37 jdurand Also, even if it was right, I have rarelly seen grammars that do not require "business" logic to handle ambiguities
04:38 jdurand Even for one of the most popular grammar of the computing: XML - almost everybody thinks that was is public (the 5th edition) is "final" - Hey... what a joke
04:38 jdurand Here are the links that proves that one must NOT take it as it is:
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04:38 jdurand https://lists.w3.org/Archives/Public/xml-editor/2011OctDec/0000
04:39 jdurand https://lists.w3.org/Archives/Public/xml-editor/2011OctDec/0001
04:39 jdurand https://lists.w3.org/Archives/Public/xml-editor/2011OctDec/0002
04:39 jdurand https://lists.w3.org/Archives/Public/xml-editor/2011OctDec/0003
04:39 jdurand http://lists.xml.org/archives/xml-dev/200005/msg00549.html
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