escaped name that ends at end of line fails

[sjs-dogsrule]

If I have this structure, where the escaped name is the last item on the line.
wire \n_12 , \n_13
, \n_14 , \n_15 ;

I will get:
Failed to match :
Parser error: syntax error, unexpected end of file, expecting NAME or ESCAPED_NAME

The synthesis programs I use sometimes create the above structure.

If the line had the comma at the end, then it reads ok.
wire \n_12 , \n_13 ,
\n_14 , \n_15 ;