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BNF_CHK on-line - EBNF syntax validator and formatter

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Format output as:

      

Umberto Salsi

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An abstract of the last comments from the visitors of this page follows. Please, use the Comments link above to read all the messages or to send your contribute.

2009-12-21 by Umberto Salsi
Re: EBNF
Anonymous wrote: [...] I would to remember you all to read the specifications about my little program (click on the "Section index" link above) where the exact syntax the program accepts is clearly explained. About the repetition factor, the syntax 3*A can be easily converted to A A A without commas.

2009-12-11 by Anonymous
Re: EBNF
Anonymous wrote: [...] The syntax checker also does not understand the repetition syntax above, such as bb = 3 * aa, "B";

2009-03-05 by Anonymous
EBNF
It seems that your EBNF syntax checked does not understand ','. In EBNF it is called 'concatenate-symbol'. Eample from ISO 17977: bb = 3 * aa, "B"; cc = 3 * [aa], "C"; Your checker does not understand comma here.