12
edits
Changes
As of bug 1459743 the stringbundle stuff has been backed out again.
== Removed in Thunderbird 63 ==
* XUL elements <code>listbox</code>, <code>listboxitem</code> and <code>listcell</code>. <br/>Replacement: <code>richlistbox</code> ([https://github.com/jobisoft/CategoryManager/commit/2267888be7de0d7ebe4f5b4626c48210c071b16f example migration])
* XUL <code>stringbundleset</code> / <code>stringbundle</code>. You will also be unable to use the `nsIStringBundleService` interface.<br/>Replacement: Use <code>Services.strings.createBundle(...)</code>.<br/>In order to use stringbundles, you need to load stringbundle.js in your XUL: <code><script type="application/x-javascript" src="chrome://global/content/elements/stringbundle.js"/></code>, but the XUL Overlay loader takes care of this. See also [https://bugzil.la/1459743 bug 1459743]. {{note|I am not sure the above information is correct with current Thunderbird trunk builds as of March 30, 2019. I got errors when attempting to embed <code>stringbundle</code> elements in XUL overlays. [[User:Jikamens|Jikamens]] ([[User talk:Jikamens|talk]]) 00:34, 31 March 2019 (UTC)}}
* <code>mailServices.js</code> has been renamed to <code>MailServices.jsm</code>. The old name keeps working for now, but you get a deprecation warning in the error console if you use the old name.
* Starting in Thunderbird 63, all XBL-bindings will be removed from Thunderbird. That means, that if you have a XBL=binding in your add-on that extends a binding that is removed, your binding will fail. With [https://bugzilla.mozilla.org/buglist.cgi?o1=equals&v1=1484976&f1=blocked this] query, you can see all the bugs related to de-xbl-ing Thunderbird, and see how the removal of each binding is handled.
* A bunch of globals in the message composition window were removed: <code>nsIMsgCompDeliverMode</code>, <code>nsIMsgCompSendFormat</code>, <code>nsIMsgCompConvertible</code>, <code>nsIMsgCompType</code>, <code>nsIMsgCompFormat</code>, <code>nsIAbPreferMailFormat</code>, <code>nsIPlaintextEditorMail</code>, <code>nsISupportsString</code>, and <code>mozISpellCheckingEngine</code>. If you use any of these, there are available as the same names underneath <code>Ci.</code> (a.k.a. <code>Components.interfaces.</code>).
== Removed in Thunderbird 64 ==
* XUL element <code>colorpicker</code>.<br/>Replacement: HTML <code>input type=color</code>
