I must be missing something obvious in here but I just can't seem to find it. Trying to craft a grammar using Regexp::Grammars and I can't get this code to compile. I keep getting the "Quantifier follows nothing" error. 

 my $token_grammar = qr {
        
        <nocontext:>
        <debug: on>
        
        <[unit]>+
        
        <token: unit>                  <word> | <punctuation>
        <token: word>             \b \w+ \b   |  <hyphenword>  |  <con
+traction>
        <token: hyphenword>  \b \w+ ( - | -- ) \w+ \b
        <token: contraction>    \b \w+ ' \w \b
        <token: punctuation>   ( \.+ | ,+ | ?+ | !+ | "+ | '+ | ;+ | :
++ | -+ | &+ | \(+ | \)+ | \[+ | \]+ )
        
    };

[download]

I've tried reducing it to just

 
my $token_grammar = qr {
        
        <nocontext:>
        <debug: on>
        
        <[unit]>+
        
        <token: unit>                  <word>
        <token: word>             \b \w+ \b  
}

[download]

But this just gives be a "Nested Quantifiers" error. Any ideas? Thanks for looking!

In reply to Quantifier follows nothing error in Regexp::Grammars by nathaniels

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