The regular expression re_table_name used in function sql_utils::table_from_sql cannot match table name with non English characters.

[FredBill1]

I have a postgis table named 注记5. I'm using postgis datasource with parameter:

<Parameter name="table"><![CDATA[注记5]]></Parameter>
<Parameter name="geometry_field"><![CDATA[]]></Parameter>

Ideally, the geometry_field can be automatically selected from geometry_columns table with the corrent table parameter, but the setting above only works in the previous mapnik versions.

I have noticed this API changes between v3.0 and v3.1, which says:

PostGIS & PGraster: The table/geometry_table/raster_table parameter in XML style must be quoted if it would need quoting in SQL query

But when using postgis outside of mapnik, I do not need to add quotes for the non English characters in query statements.

The current version of sql_utils::table_from_sql (source) uses the regular expression re_table_name (source) to match the table and schema name:

\s*
(\w+|("[^"]*")+)
(\.(\w+|("[^"]*")+))?
\s*

where \w only matches [A-Z a-z 0-9_]. I have to either add quotes, manually set geometry_field parameter, or revert back to use the old version of the function sql_utils::table_from_sql.

Is this the expected behaviour?