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In the previous coding, psql's state variable saying that output should go to a file was only reset after successful completion of a query returning tuples. Thus for example, regression=# select 1/0 regression-# \g somefile ERROR: division by zero regression=# select 1/2; regression=# ... huh, I wonder where that output went. Even more oddly, the state was not reset even if it's the file that's causing the failure: regression=# select 1/2 \g /foo /foo: Permission denied regression=# select 1/2; /foo: Permission denied regression=# select 1/2; /foo: Permission denied This seems to me not to satisfy the principle of least surprise. \g is certainly not documented in a way that suggests its effects are at all persistent. To fix, adjust the code so that the flag is reset at exit from SendQuery no matter what happened. Noted while reviewing the \gset patch, which had comparable issues. Arguably this is a bug fix, but I'll refrain from back-patching for now. |
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PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: http://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Changes between all PostgreSQL releases are recorded in the file HISTORY. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.