PostgreSQL: active? compatibility with the pure-Ruby driver.  Still need to move connect into the adapter since postgres-pr doesn't support #reset.  References #428.

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Introduce Dependencies.warnings_on_first_load setting.  If true, enables warnings on first load of a require_dependency.  Otherwise, loads without warnings.  Disabled (set to false) by default.

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Oracle: active? check pings the database rather than testing the last command status.  References #428.

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Made test_update_attributes_after_push_without_duplicate_join_table_rows pass with Oracle Adapter. #2888


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SQLServer: resolve column aliasing/quoting collision when using limit or offset in an eager find.  References #2974.

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Introduce :selected option to the select helper.  Allows you to specify a selection other than the current value of object.method.  Specify :selected => nil to leave all options unselected.  Closes #2991.

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Enable warnings on first load only.  File which are loaded but raise an exception are not added to loaded set.

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Fixed bug where using update_attribute after pushing a record to a habtm association of the object caused duplicate rows in the join table. #2888


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Correct spelling of persistent [Stefan Kaes].  Document and eliminate warnings in clear_persistent_model_associations.

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MySQL, PostgreSQL: reconnect! also reconfigures the connection.  Otherwise, the connection 'loses' its settings if it times out and is reconnected.  Closes #2978.

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Remove superfluous check for pluralize_table_names (use table_name which does this check when it's set).

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FormHelper correctly passes its object through select, collection_select, country_select, and time_zone_select.

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Allow assert_tag(:conditions) to match the empty string when a tag has no children. Closes #2959. [Jamis Buck]


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MySQL: introduce :encoding option to specify the character set for client, connection, and results.  Only available for MySQL 4.1 and later with the mysql-ruby driver.  Do SHOW CHARACTER SET in mysql client to see available encodings.  Closes #2975.

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Make the db_schema_dump task honor the SCHEMA environment variable if present the way db_schema_import does. Closes #2931.

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 Active Support is warnings-safe.  References #1792.


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 Introduce enable_warnings counterpart to silence_warnings.


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 Test for absence of instance vars rather than nil so we don't get a warning.


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 Enable Action Mailer warnings in unit tests.  adv_attr_accessor hecks for presence of instance variable before getting it.


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