Re: [zzdev] Re: [zzdev] zob2java problems on Mac

[Benjamin Fallenstein <b.fallenstein@xxxxxx>]

Wow, now I'm learning Perl...

I've isolated the bug. And it has apparently nothing to do with 
newlines. In the code:

>     while ($level > 0) {
>         die "Unbalanced braces" if $str eq "";
>         $str =~ /^([^{}]*)([{}])(.*)$/s;
>         if ($2 eq "{") { ++$level; }
>         if ($2 eq "}") { --$level; }
>         $str = $3;
>         $rv = $rv . $1 . $2;
>     }

in parse_balanced, the value of $1 and $2 changes (in MacPerl) when
doing $str = $3, and this has disastrous effects. My simple patch looks
like this:

>     while ($level > 0) {
>         die "Unbalanced braces" if $str eq "";
>         $str =~ /^([^{}]*)([{}])(.*)$/s;
>         my ($first, $second) = ($1, $2);
>         if ($2 eq "{") { ++$level; }
>         if ($2 eq "}") { --$level; }
>         $str = $3;
>         $rv = $rv . $first . $second;
>     }

... and outputs the right thing. If this isn't somehow frowned upon, or
stupid (remember, I don't *really* know what I'm doing ;) ), could you
change it in the repository? It *should* work on others than MacPerl, right?

Thx,
- Benja