Fwd: Bug?

In pgAdmin III

I select one function from the Object browser and I can see source code in SQL Pane:

In psql:

nacer=# \df+ nacer.periodos;

List of functions

-[ RECORD 1 ]-------+-------------------------------------------------------------------------------------------------

Schema              | nacer

Name                | periodos

Result data type    | TABLE(per_fecha timestamp without time zone)

Argument data types |

Type                | normal

Volatility          | volatile

Owner               | postgres

Language            | plpgsql

Source code         |

                    | declare

                    | lts_minimo timestamp;

                    | lts_maximo timestamp;

                    | begin

                    | select max(periodo), min(periodo) into lts_maximo, lts_minimo from nacer.historicotemp;

                    | RETURN QUERY select * from generate_series(lts_minimo, lts_maximo,'1 month'::interval);

                    | end;

                    |

Description         |