[DGD] Question about parse_string

[Felix A. Croes]

Jay Shaffstall <jshaffst at netwalk.com> wrote:

>[...]
> >The thing to do is to add a "garbage" token rule to the grammar that
> >catches anything...
>
> Odd...that was one of the things I tried before mailing the list.  Here's 
> my test code with that bit added:
>
>          if (parse_string ("whitespace = /[\b\n\r\t ]+/ garbage = /.+/ 
> command: 'touch' 'pole' command: 'touch' 'the' 'pole'", "touch pole"))
>                  this_user ()->message ("Parsed!\n");
>          else
>                  this_user ()->message ("Did not parse.\n");

Oops, my mistake.  The extra rule should be:

    garbage = /./

Otherwise the longest match for " pole" will be the garbage token, rather
than whitespace followed by "pole".

Regards,
Dworkin
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