adding a double quote into a regsub in vcl_fetch

[Paul A. Procacci]

>  if (req.url ~ "^/blah") {
>                 set beresp.http.Link = regsub(req.url, "^/(blah).*",
> "<http://example.com/blah>; rel=\" + "canonical" + " ");
>                 return(deliver);
>         }
>

set beresp.http.Link = regsub(req.url, '^/blah.*', '<http://example.com/blah>; rel="canonical" ');

This maybe?

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