o, if the
      index creation is in fact still in progress, it seems reasonable to
      consider it to be an uncommitted DDL change, which
      <SPAN
CLASS="APPLICATION"
>pg_dump</SPAN
> wouldn't be expected to dump anyway.
     </P
></LI
><LI
><P
>      Fix <TT
CLASS="FILENAME"
>contrib/pg_trgm</TT
>'s <CODE
CLASS="FUNCTION"
>similarity()</CODE
> function
      to return zero for trigram-less strings (Tom Lane)
     </P
><P
>      Previously it returned <TT
CLASS="LITERAL"
>NaN</TT
> due to internal div