Now IBus provides the pre-edit semantic APIs for IBus engines and IBus panel(and gnome-shell) and this is a note for developers.

• ibus_attr_hint_new() is available for each IBusEngine to implement the pre-edit and ibus_attr_underline_new(), ibus_attr_foreground_new(), ibus_attr_foreground_new() are deprecated APIs now and those warns in the C code builds and Python runtime with ibus-daemon beta versions.
• ibus_panel_service_set_preedit_format() and ibus_input_context_set_preedit_format() and is available for IBusPanel to select the new presentations.
  https://github.com/ibus/ibus/wiki/Wayland-Colors

IBusMessage APIs are provided for IBusEngine to use a popup dialog in Wayland.

en-US compose table is not loaded if your compose file does not include the "include %L" keyword which is followed with GTK 4.18.5. and if your compose cache was generated by the old IBus versions, the keyword will be inserted in your compose file automatically when IBus 1.5.33 is used.

Most memory leak issues are fixed.

Features & Bug Fixes:

• Implement IBusMessage cf6263e 40fcbeb
• Improve BEPO compose sequence visuals 43fc417
• Do not load en-US compose table by default 7c2b32b cf2ab73
• Replace XTEST with libinput in IBus tests ffeed83 016613e 09b612c
• Provide preedit semantic APIs ae3c987 05518c3
• Optimize CFLAGS for product release c74b10b
• Update simple.xml with xkeyboard-config 2.45 3beaf9d
• Update ibusunicodegen.h with Unicode 17.0.0 ae629fc
• Fix memory leaks b4f51b6 a800957 fd18bda b3a9fb2
• Bug fixes for Wayland input-method d0ad4e6 e7222db 5f2c6c4 1b67352
• Enhance build issues 5b2d56d c5d98f9 8b64411 2bc23ed e39fac3 2a7f18a 0922e96 77e9ebb
• Fix PageUp/PageDown buttons with hiding candidate popup 2a3f380

Code Contributors:

• Free IBusObservedPath objects during traversal (matiwari) 7feb57a
• Append non-glyph characters at last order for partial annotations (matiwari) 219386a
• Optimize GVariant usage by avoiding temporary variants (matiwari) 15554ec
• Add missing g_object_ref_sink (Emmanuel Lesueur) 0b8f5ff
• init automake with option foreign (Peter Hutterer) 1512da3
• Fork off the engine handling into a separate process (Peter Hutterer) 7ed99a5
• Fix bash '=' operator (Izumi Tsutsui) 93b0c8f

Translation Contributors:

• Update translation (Finnish) (Ricky Tigg) fbd9cdb
• Update translation (Spanish) (Fco. Javier F. Serrador) c669a85
• Update translation (Kabyle) (Moonshadow) 93175b4
• Update translation (Kabyle) (ButterflyOfFire) 2b8bd12
• Update translation (French) (Léane GRASSER) 24bd6be
• Update translation (Italian) (Salvatore Cocuzza) 353f199
• Update translation (Korean) (김인수) 9fc1907
• Update translation (Ukrainian) (Yuri Chornoivan) d2706b7
• Update translation (German) (Mike FABIAN) 120a7d5
• Update translation (Polish) (Piotr Drąg) c9d6ef6
• Update translation (Greek) (Jim Spentzos) a3cf3e1
• Update translation (Swedish) (Luna Jernberg) 76b569c
• Update translation (Portuguese (Brazil)) (Rafael Fontenelle) 27f5216
• Update translation (Catalan) (naly zzwd) 95d566f
• Update translation (Japanese) (fujiwarat) 235c20b

Full Changelog: 1.5.32...1.5.33-rc1