my $linkpattern = <<PATTERNEND;
              (\bINT\s?[0-9A-Fa-f]{2}[Hh]?
                (?:\/(?:E?[ABCD][XHL]|E?[SD]I|E?[SB]P|[DESC]S)=[0-9A-Fa-f]{2,}[Hh]?)+
                (?:\"[^\"]+\")?
               )
              |(\bINT\s?[0-9A-Fa-f]{2}[Hh]?
                (?:\"[^\"]+\")?
               )
              |(\b(?:E?A[XHL])=[0-9A-Fa-f]{2,}[Hh]?
                (?:\/(?:E?[ABCD][XHL]|E?[SD]I|E?[SB]P|[DESC]S)=[0-9A-Fa-f]{2,}[Hh]?)*
                (?:\"[^\"]+\")?
               )
              |(\#[0-9A-Z][0-9]{4}\b)
              |(\bMEM\s?[0-9A-Fa-fXx]{1,4}[Hh]?:[0-9A-Fa-fXx]{1,4}[Hh]?
                (?:\"[^\"]+\")?
               )
              |(\bMEM\s?[0-9A-Fa-fXx]{1,8}[Hh]?
                (?:\"[^\"]+\")?
               )
              |(\@[0-9A-Fa-fXx]{1,4}[Hh]?:[0-9A-Fa-fXx]{1,4}[Hh]?
                (?:\"[^\"]+\")?
               )
              |(\bPORT\s?[0-9A-Fa-fXx]{1,4}[Hh]?-[0-9A-Fa-fXx]{1,4}[Hh]?
                (?:\"[^\"]+\")?
               )
              |(\bPORT\s?[0-9A-Fa-fXx]{1,4}[Hh]?
                (?:\"[^\"]+\")?
               )
PATTERNEND
            while (not $second and $linking =~
              /$linkpattern/x) {
              my $intplus = $1;
              my $intonly = $2;
              my $regonly = $3;
              if (defined $regonly and not defined $int) {
                if (defined $link) {
                  print_or_errorline("Entered reg only link without implicit INT");
                  return;
                }
                $maskhighlight .= " " x (length($`) + length($&));
                $linking = $';
                next;
              }
              my $table = $4;
              my $mem_16_16 = $5;
              my $mem_32 = $6;
              my $call = $7;
              my $portrange = $8;
              my $portsingle = $9;
              $maskhighlight .= " " x length $`;