We are pleased to announce RT4.0.19 is now available. This release is primarily a bugfix release; of particular note is that it contains schema changes for MySQL, the first notable such in the 4.0 series. Though the changes are limited, it is especially important to take, and verify you can recover from, a database backup prior to upgrading.

Other changes of note:

Documentation

Add documentation for rt-crontool
Clean up examples in Lifecycles documentation
Document additional indexes that increase performance of Shredder
Replace a suggested GnuPG option with one which is not deprecated
Note that errors reported from the GnuPG infrastructure may be caused by GnuPG not being configured, but having been automatically enabled.

Database

On MySQL, alter the character set of all columns used to store email addresses to UTF-8
Ensure that invalid byte sequences that may have snuck into the database previously (on earlier versions on MySQL, for instance) are not blindly interpreted as UTF-8 when retrieved from the database. As a result, invalid bytes will be returned from the API as the four characters "\xHH", where HH is the hexadecimal encoding of the byte.
Ensure that all data containing non-ASCII is quoted-printable encoded for PostgreSQL, instead of merely all data not claiming to be text/plain
Additional warnings prevention on Oracle; tests now pass cleanly
Allow fully-automated database upgrades using --upgrade-from and --upgrade-to options to rt-setup-database
Clean out any remaining traces of RTFM that lingered in custom fields and custom field values that were disabled at the time of the previous upgrade step.
Bullet-proof a 3.8 → 4.0 upgrade step for Scrips with no Condition

Email

Set a transfer encoding on outgoing dashboards; this resolves issues with long lines when using the Sendmail MTA.
Cope with mangled and overly-quoted recipient headers occasionally generated by Outlook.

General user UI

When using the back button to return to a reply page with the rich text editor, contents will no longer be doubly HTML-encoded
Improve rendering on Internet Explorer 6
Fix cascaded custom fields on Internet Explorer 8 and below.
Support cascaded selects for all Select render types (dropdown, select box, radio buttons, checkboxes)
Minor rendering bugs with Charts placed on homepages and dashboards
Add "mark as seen" functionality to SelfService ticket display pages
Link the ModifyPeople page when the user has Watch or WatchAsAdminCc
Whitelist "show outgoing email" and chart results from CSRF protection
RT 4.0.7 introduced a performance regression when building ticket searches that query Links; switch back to a much better-indexed query.
Fix "Clone ticket" functionality with Select-multiple custom fields.
Show the queue ID for the current queue in the ticket edit page, even if the user does not have SeeQueue; this prevents the user from accidentally changing the queue.

Query Builder

Support CF.Foo in addition to CF.{Foo} and '__CF.{Foo}__' in format strings. This follows the trend of allowing brace-less forms whenever possible.
Ensure that format strings from the Query Builder escape quotes correctly, and correctly parse existing formats with quotes.
Autocomplete CF values for custom fields of type "Autocomplete" in the Query Builder.
Warnings avoidance for searches with more than 1000 results.

Admin

Fix real-time updating of Theme CSS on Internet Explorer 8 and below
Fix a minor display bug in the CF Admin pages, where the queue number instead of queue name would be displayed in requests shortly after server startup.
Add "Extra Info" as a possible field for "More About Requestor"

iCal

Ensure that iCal dates are formatted with a leading space on the first nine days of each month, for correctness.
Show iCal dates (when omitting times) in the user's timezone, not UTC

REST

Prevent a server error when attempting to guess content-type in the REST interface.

Development

Custom Action and Condition packages (as supplied by extensions; these are not the text entry boxes in the UI) are now loaded at server startup time, to catch compile-time errors in such classes early as well as reducing RT's memory footprint on mod_perl. Previously, these errors would have logged errors only when their Scrip failed to fire. This restores the behavior found in RT 3.8, which was mistakenly removed in RT 4.0.0.
rt-dump-metadata has slightly more documentation and options
Additional callbacks, including in charts, and on ticket reply pages
Show customized rights under their appropriate categories
Remove an unused Makefile target
Ensure that RT::Template->Create returns (result,message) and not simply result

A complete changelog is available from git.

RT 4.0.19 released