// this shall become the rudiments of a Markdown to HTML compiler

ometa trivial {
  alpha = 'a' | 'b' | 'c' | ' ',
  alphaText = alpha:a alphaText:as  -> [a, as]
            | alpha:a               -> a,
  boldText = '*' alphaText:t '*'    -> ['bold', t],
  text = alpha:a text:t             -> [a, t]
       | boldText:b text:t          -> [b, t]
       | alphaText:a                -> [a]
}

trivial.matchAll('aaa*bbb*ccc','text')

[1,2,3].concat([4,5,6])

ometa MDtest {
  alpha = 'a' | 'b' | 'c' | ' ',
  text = alphaText:a text:t                   -> [a, t]
       | boldText:b text:t                    -> [b, t],
  alphaText = alpha:a alphaText:as            -> [a, as],
  boldText = '*' alphaText:t '*'              -> ['bold', t],
}

MDtest.matchAll('aaa','text')

ometa MDregex {
  alpha = 'a' | 'b' | 'c' | ' ',
  alphaStar = alpha | '*',
  bold = alphaStar* '*' alpha* '*' alphaStar*,
  foo = alphaStar*:x '*' -> x
}

MDregex.matchAll('aaa *','foo')
MDregex.matchAll('aaa *bbb* ccc','bold')