typedef: quote_literal is not unique

[erichanson]

Creating a bundle throws a 500 because:

{
  "status_code": 500,
  "title": "Server Error",
  "message": {
    "state": "42725",
    "message": "function quote_literal(\"char\") is not unique",
    "detail": "",
    "context": "PL/pgSQL function meta.get_typedef_base(oid) line 5 at SQL statement\nPL/pgSQL function meta.get_typedef(oid) line 10 at RETURN\nPL/pgSQL assignment \"q := '\n            with inserted_row as (\n                insert into ' || quote_ident(_schema_name) || '.' || quote_ident(_relation_name) ||\n                case when args::text = '{}'::text then\n                    ' default values '\n                else\n                    ' (' || (\n                        select string_agg(quote_ident(json_object_keys), ',' order by json_object_keys)\n                        from json_object_keys(args)\n\n                    ) || ') values (' || (\n\n\n\n                           select string_agg('\n                                   case when json_typeof($3->' || quote_literal(json_object_keys) || ') = ''array'' then ((\n                                            select ''{'' || string_agg(value::text, '', '') || ''}''\n                                            from json_array_elements(($3->>' || quote_literal(json_object_keys) || ')::json)\n                                        ))\n                                        when json_typeof($3->' || quote_literal(json_object_keys) || ') = ''object'' then\n                                            ($3->' || quote_literal(json_object_keys) || ')::text\n                                        else ($3->>' || quote_literal(json_object_keys) || ')::text\n                                   end::' || case when json_typeof((args->json_object_keys)) = 'object' then 'json::'\n                                                  else ''\n                                             end || c.type_name, ',\n                                   '\n                                   order by json_object_keys\n                           ) from json_object_keys(args)\n                           inner join meta.relation_column c\n                                   on c.schema_name = _schema_name and\n                                      c.relation_name = _relation_name and\n                                      c.name = json_object_keys\n                           left join meta.type t on c.type_id = t.id\n\n\n\n                    ) || ') '\n                end ||\n                'returning *\n            )\n            select (''{\n                \"columns\": ' || endpoint.columns_json(_schema_name, _relation_name, null::text[], null::text[]) || ',\n                \"pk\":\"' || coalesce(endpoint.pk_name(_schema_name, _relation_name), 'null') || '\",\n                \"result\": [{ \"row\": '' || row_to_json(inserted_row.*, true) || '' }]\n            }'')::json\n            from inserted_row\n        '\"\nPL/pgSQL function row_insert(relation_id,json) line 20 at assignment\nSQL statement \"select 200, 'OK'::text, (select endpoint.row_insert(relation_id, post_data))::text, 'application/json'::text\"\nPL/pgSQL function endpoint.request(text,text,text,json,json) line 134 at RETURN QUERY",
    "sqlerr": "function quote_literal(\"char\") is not unique",
    "sqlstate": "42725"
  }
}

aquameta=# select * from meta.function where name='quote_literal';
-[ RECORD 1 ]--+-----------------------------------------------------
id             | ("(pg_catalog)",quote_literal,{anyelement})
schema_id      | (pg_catalog)
schema_name    | pg_catalog
name           | quote_literal
parameters     | {anyelement}
definition     | select pg_catalog.quote_literal($1::pg_catalog.text)
return_type    | text
return_type_id | ("(pg_catalog)",text)
language       | sql
returns_set    | f
-[ RECORD 2 ]--+-----------------------------------------------------
id             | ("(pg_catalog)",quote_literal,{text})
schema_id      | (pg_catalog)
schema_name    | pg_catalog
name           | quote_literal
parameters     | {text}
definition     | quote_literal
return_type    | text
return_type_id | ("(pg_catalog)",text)
language       | internal
returns_set    | f