alternatives ::= equiAlt +/ (ws ">" ws)
equiAlt ::= conjuncts +/ (ws "|" ws)
-sequence ::= es
+sequence ::= e */ (w**)
> es ws ^"/" e
es ::= e */ (w**)
-ss ::= es | es ^"/" e /ws
+ss ::= es => "seq" | es ^"/" e /ws
conjuncts ::= rewrite
| rewrite ^"&" e*/ws /ws
| rewrite ^"&~" e*/ws /ws
-rewrite ::= sequence /ws => "rewrite"
- | sequence ^"=>" word /ws
- | sequence ^"=>" quoted /ws
- | sequence "=>" "()" /ws => "wrap"
+rewrite ::= sequence /ws => "rewrite"
+ | sequence ^"=>" (word|quoted) /ws
ec ::= [~\-\]\\\~]
| escaped
range ::= ec => "range"
| ec ^"-" ec
-e ::= word => "nonTerminalY"
+e ::= word => "nonTerminal"
| [(][)] => "epsilon"
| ^"{" alternatives "}" /ws
| ^"[" (range*) "]"
| ^"[~" (range*) "]"
| ^"^" quoted /ws
- | e ^"~/~" /ws
| ^"!" e /ws
- | ^"`" e /ws
- | e ^"#" /ws
-
| (e ws ^"**" > e ws ^"*")
| e ^"*/" e /ws
| (e ws ^"++" > e ws ^"+")