The syntax for an EBNF parser is now ``EBNF: identifier string``. The
inline syntax went from [EBNF ... EBNF] to EBNF[[ ]], EBNF[=[ ]=], etc.
<EBNF looked for a main word, but this functionality is just EBNF[[ ]]
now.
<EBNF .. EBNF> now produces a quotation that when called does the parsing
EBNF: foo ... ;EBNF creates a 'foo' word with stack effect (string -- result)
when called it parses the string and returns the result.
Doug Coleman
John Benediktsson
Chris Double