[[Property:modification_date|Fri, 16 Oct 2026 13:39:58 GMT]]
[[Property:publication_date|Thu, 15 Oct 2026 15:51:03 GMT]]
[[Property:uuid|CE356164-BB20-44BC-997A-F219C37F6F61]]
[[Property:title|Release notes for EiffelStudio 26.09]]
[[Property:link_title|26.09]]
[[Property:weight|-13]]
EiffelStudio 26.09 makes it easier to find and add libraries, adds new platforms, improves the GTK 3 experience on Linux, and adds several new libraries.

== Highlights ==

=== Find Library ===
The new '''Find Library''' dialog replaces "Add Library...". Open it from the Tools menu, the context menu, the Groups tool, the project toolbar or Project Settings.

* Search libraries or classes, with strict or non-strict matching and a <code>category:</code> criterion.
* Filter by category: <code>official</code>, <code>contrib</code>, <code>precompiled</code>, plus categories taken from <code>package.iron</code> files and IRON packages. You can choose which categories appear as filters.
* A details panel shows the description, void-safety, metadata, links and classes. From it you can install or uninstall IRON packages and set the location and name used in the project.
* "Add to project" updates and saves the current target, and offers to recompile when the dialog closes. Precompiled libraries can replace the current precompile.
* The IRON packages manager can now register and unregister IRON repositories.
* Library discovery follows the <code>project</code> section of <code>package.iron</code>, so the list no longer includes example and test ECFs.

=== Compiler ===
* Smarter common type for manifest arrays: typed manifest arrays like <code>{ARRAY [T]} << ... >></code> are needed less often, especially with generic types. Attachment and separateness are kept.
* Fixed a wrong "Current used before initialized" error for non-object calls (bug#19974).

=== New platforms and tools ===
* '''Visual Studio 2026''' support.
* Linux packages are built on Ubuntu 24.04. libfcgi now builds with GCC 14 and later.

=== Linux / GTK 3 ===
* HiDPI, text scaling (GNOME, <code>gtk-xft-dpi</code>), multi-monitor, XWayland and drag-and-drop fixes. Fonts update live when desktop settings change.
* The IDE stays responsive again, and pixmap errors (<code>BadValue</code>) during resizing and docking are gone.
* File dialogs no longer abort when GSettings schemas are not found (GTK from Homebrew or MacPorts, or a relocated GTK).
* Dead keys followed by space now produce the composed character (e.g. <code>"</code> + space gives <code>"</code>).
* Docking: split positions are restored correctly when switching between normal and debug layouts, and tab bars resize properly.

=== EiffelStudio ===
* '''SCM tool''': a more compact toolbar. The commit button shows the active changelist, and its drop-down menu can manage changelists.
* Diagram zoom, context menu and multi-monitor window placement fixes. The cloud license dialog no longer freezes the IDE, and reconnecting to the license server is more reliable.
* Translations: French and Spanish are now complete. German, Russian and Chinese (simplified) are updated.

== New libraries ==
* '''ePDF''': read, write (full and incremental) and encrypt PDF 1.7 documents.
* '''EiffelTUI''': build terminal user interfaces with layouts, styled text, mouse and keyboard events, and a rich set of widgets.
* '''Markdown''': parser, plus XHTML and AST generation.
* '''YAML''' and '''BSON''': parsers and writers, with converters to and from JSON (<code>yaml_json</code>, <code>bsonjson</code>), and a shared '''stream''' input library.
* '''Crypto''': a cryptographically secure random number generator.

== Library improvements ==
* '''EiffelStore (MySQL/MariaDB)''': MariaDB works on Unix, a wider range of MySQL client versions is supported, and <code>DATE</code> and <code>DECIMAL</code> support is better. You can skip SSL checks and use the <code>client</code> section of <code>~/.my.cnf</code>, which helps with MySQL 8. Connections to <code>localhost:<port></code> use TCP and report the real error.
* '''EiffelBase''': a fix for <code>IMMUTABLE_STRING_8</code> substrings (thanks to Finnian Reilly).
* '''Web''': S3 client (list prefixes), HTTP <code>Link:</code> header, JSON <code>is_boolean</code>, WSF router and request helpers, <code>DECIMAL</code> accepts <code>READABLE_STRING_8</code>.
* '''Eiffel Web CMS''': mail web API, API key rotation and expiration, better export and import, <code>DECIMAL</code> and <code>DATE</code> storage support, a new template hook, and several fixes.
* '''Gobo 26.09''': SCOOP wait conditions in <code>gec</code>, contract views in <code>gedoc</code>, and more validity checks.

See [https://dev.eiffel.com/EiffelStudio_26.09_Releases change log] for more details.