I like the capability to redefine syntax.
For example, I would like to be able to define syntax that looks like
EBNF when writing parsers. I would like to be able to write
E = T {(`+`|`-`) T}
rather than
e = concat1 (t,zeroOrMore (concat2 (alternative (lit '+',lit '-'),t)))
Of course infix operators help, but what about nice multiple
token symbols like { } ?
So, minimally, I am in favor of the local redefinition of symbols like
'+' and '>=', and think it unfortunate that there is a clash between
the redefinition and treatment of n+k patterns.
This is a vote for dumping n+k patterns, and a wish for more flexible
syntax not hampered by special cases.
Ken
