v0.11.0

What's New in libchewing 0.11.0 (January 10, 2026)

• Features

  • cli: Now outputs and reads dictionary metadata in source file
  • cli: Detects mismatched phrase word count and syllable count
  • cli: Ignores empty line or line starts with # when processing dictionary
  • editor: Support optional sorting candidates by frequency. Previously the
    candidates are always sorted by their order in the dictionary.

• Developer Features

  • New API chewing_handle_KeyboardEvent() can be used to support any
    keyboard layout combination without updating libchewing. Other keyboard
    handling API will be deprecated in future release.
  • New API chewing_new3() and chewing_get_defaultDictonaryNames() can be
    used to initialize a chewing context with specific dictionaries enabled.
  • New boolean config option chewing.sort_candidates_by_frequency can be
    set to enable sorting candidates by frequency.
  • Rust type SyllableSlice is removed from public interfaces.
  • Provide libchewing as a Swift package (C based API only).

• Bug Fixes

  • Auto shift cursor after candidate selection now moves the cursor to the
    next phrase instead of the next word.
  • Fixed a bug when switching input mode from Chinese to English, the state
    can be stuck in entering bopomofo.
  • Fixed the frequency estimation function used by phrase learning to really
    take last used time into consideration. Also assign higher frequency to
    newly learned phrases.

• Changes

  • SQLite support is now fully optional and disabled by default
  • rust: new sqlite-bundled feature can be used to build with bundled sqlite
    to simplify the build configuration on Windows
  • cli: will try to migrate to new schema when dumping chewing.sqlite3 file
  • Use less heuristic when calculating phrase segmentation score.
  • Reimplement scoring algorithm to use conditional probability.
  • cli: init-database will no longer normalize the frequency of single word
    phrase to zero.
  • autolearn: new phrases with break words inside will be learned both with
    and without the break word.
  • rust: simplified dictionary API.
  • rust: the DictionaryMut trait is merged back to the Dictionary trait.
  • rust: the Editor::set_editor_options now accepts a closure for setting
    options in place.

• Dictionary

  • Default symbols.dat now includes commonly used emojis.
  • Dictionary data are built directly from the libchewing-data repository

• Build

  • Bump MSRV to 1.88

New Contributors

• @winterheart made their first contribution in #748
• @eagleoflqj made their first contribution in #759
• @ShikiSuen made their first contribution in #790

Full Changelog: v0.10.3...v0.11.0

v0.10.3

What's New in libchewing 0.10.3 (August 24, 2025)

• Bug Fixes

  • Fix quick symbol menu for ｜(introduced in 0.8.0) (#737)

• Dictionary

  • Remove some incorrect phrase-bopomofo mapping entries

Full Changelog: v0.10.2...v0.10.3

v0.10.2

What's New in libchewing 0.10.2 (August 14, 2025)

• Bug Fixes

  • Fix ㄈㄥ was incorrectly mapped to 風靡

• Dictionary

  • Added missing bopomofo for 風靡

Full Changelog: v0.10.1...v0.10.2

v0.10.1

What's New in libchewing 0.10.1 (August 2, 2025)

• Features

  • cli: Ignore empty lines or lines starts with # when processing dictionary

• Bug Fixes

  • Add missing bopomofo mapping to the GinYieh layout
  • Correct IBM layout mapping

• Dictionary

  • Import improvements from libchewing-data

Full Changelog: v0.10.0...v0.10.1

v0.10.0

What's New in libchewing 0.10.0 (July 26, 2025)

• Features

  • New keyboard layout Colemak.
  • cli: New --fix option enables auto correction for simple tsi.src errors
  • cli: Allow multiple whitespace in dictionary source file

• Developer Features

  • New API chewing_bopomofo_String() can be used to retrieve current bopomofo string in the buffer. This deprecates the old non-thread safe chewing_bopomofo_String_static.
  • New API chewing_cand_string_by_index() can be used in UILess mode to query candidate string from candidate list.

• Changes

  • BREAKING: System dictionary loader now loads base and extra dictionary separately. (Rust)
  • Simple mode now always auto-commit after candidate selection to align with ㄅ/半 experience.

• Bug Fixes

  • chewing_keystroke_CheckAbsorb() correctly return true when a keystroke was absorbed due to error.
  • chewing_commit_preedit_buf() does not return error when the bopomofo buffer is empty, to match previous behavior.
  • chewing_clean_preedit_buf() does not return error when the bopomofo buffer is empty, to match previous behavior.
  • Avoid panics in chewing_new()
  • Don't panic when conversion fails
  • Don't panic when symbols table contains empty line
  • Avoid opening empty symbol table
  • Skip malformed lines in abbrev table
  • Handle special symbol input normally when easy symbol is enabled
  • Ignore zero-length phrases
  • Use correct %AppData% path on Windows
  • Fallback to Windows default sys path
  • Use correct search path separator on Windows
  • Check file existence with Windows quirks
  • Ensure to reload dictionary after flush buffers
  • Esc key clears buffer in simple mode
  • Correctly allocate and free array returned to C FFI
  • Initialize learned user phrase freq with orig_freq
  • Ensure user phrase takes precedence

• Dictionary

  • Add alternative sound for 麼
  • Removed some inconsistent phrases (#709)

• Build

  • Do not link to libcmtd on Windows
  • Bump corrosion to 0.5.1 to fix rustup breaking change
  • Bump MSRV to 1.85
  • Bump tools and testhelper to 2024 edition
  • Stop updating mini.dat for every build
  • Move C headers to the capi module
  • Remove unused cargo-vet settings
  • Clean-up porting layer usage in tests
  • Add upper bound to cmake_minimum_required version
  • Enable cli test
  • Stop depending on the directories crate

New Contributors

• @shawn111 made their first contribution in #667
• @New9c made their first contribution in #674
• @xunil-cloud made their first contribution in #679

Full Changelog: v0.9.1...v0.10.0

v0.9.1

What's New in libchewing 0.9.1 (October 26, 2024)

• Bug Fixes

  • Disable automatic selections snapshot which introduced more problems then
    what it tried to solve. (introduced in v0.9.0)

• Build

  • Statically link C runtime on Windows
  • Use vcpkg on Windows

Full Changelog: v0.9.0...v0.9.1

v0.9.0

What's New in libchewing 0.9.0 (August 11, 2024)

• Features

  • Support two new input modes:
    • Fuzzy mode - support prefix search, partial zhuyin search, toneless input.
    • Simple mode - like the traditional input method on Windows 95 which does
      not perform any intelligent phrasing.
  • Allow space key for pagination regardless of space_is_select_key mode.
  • Merge DOWN and SPACE key behavior in pagination.
  • A new option to disable fullwidth toggle key.
  • Workman layout support.
  • Load embedded mini dictionary if system dictionaries were not found.
  • Automatically load extra dictionaries found in search path
    • ${CHEWING_PATH}/dictionary.d/*.dat
  • Automatic snapshot selections when the curser is moved.

• Developer Features

  • BREAKING: Remove language_mode and character_form methods (Rust).
  • BREAKING: Remove unused pinyin.tab file
  • BREAKING: Remove most unused C code but keep compat C headers.
  • Bump minimum supported Rust version to 1.77
  • Enable ELF symbol versioning. All existing symbols are marked as version
    CHEWING_0.5 and new symbols from this release are marked as CHEWING_0.9.
  • A new set of configuration API:
    • chewing_config_has_option
    • chewing_config_get_int
    • chewing_config_set_int
    • chewing_config_get_str
    • chewing_config_set_str
  • New API to get runtime library version:
    • chewing_version
    • chewing_version_major
    • chewing_version_minor
    • chewing_version_patch
    • chewing_version_extra
  • New API to acknowledge output buffers:
    • chewing_ack
  • Define version macros
    • CHEWING_VERSION_MAJOR
    • CHEWING_VERSION_MINOR
    • CHEWING_VERSION_PATCH

• Bug Fixes

  • Separate special handling by pinyin variants (#298)
  • Panic when selecting phrases backwards at the end of buffer. (introduced in
    v0.8.0)

• Dictionary

  • Default dictionary updates and fixes (#331)

• Performance

  • Optimize K shortest path algorithm to handle long pre-edit buffer. This
    allowed us to remove the special DP algorithm and keep only the graph search
    based algorithm in conversion.

• Testing

  • Add benchmarks for the conversion module
  • Add tests for options and default values
  • Add test for chewing_config_set_str
  • Test chewing_config_set_str with chewing.keyboard_type
  • Allow switching keyboard layout in genkeystroke
  • Add test for simple engine symbol input
  • Support new editor options in the fuzzer.
  • Generate test cases from fuzzer input.

• Miscellaneous Tasks

  • Drop outdated ChangeLog
  • Add option to turn off tests run
  • Use system corrosion if available
  • Regenerate chewing.h using latest cbindgen
  • Include CTest and use the built-in BUILD_TESTING option
  • Manage SQLite dependency with CMake
  • Print status about SQLite3 module
  • Remove unused test files
  • Bump Corrosion to v0.5
  • Fix building without using CMake presets
  • Force linking chewing_version obj file
  • Append git describe to version string for unreleased version.

• New Contributors

  • @chenrui333 made their first contribution in #560
  • @wusyong made their first contribution in #582

Full Changelog: v0.8.5...v0.9.0

v0.9.0-rc.3

What's New in libchewing 0.9.0-rc.3 (July 28, 2024)

• Bug fixes

  • Add back 0.5.x compat C headers. (introduced in v0.9.0-rc.1)
  • Panic when connecting symbol to symbol or symbol to phrase. (introduced in v0.9.0-rc.1)
  • Panic when selecting phrases backwards at the end of buffer. (introduced in v0.8.0)
  • Panic when autocommit in select mode triggered by the simple engine. (introduced in v0.9.0-rc.2)

• Testing

  • Support new editor options in the fuzzer.
  • Generate test cases from fuzzer input.

• Misc

  • Append git describe to version string for unreleased version.

Full Changelog: v0.9.0-rc.2...v0.9.0-rc.3

v0.9.0-rc.2

What's New in libchewing 0.9.0-rc.2 (July 22, 2024)

• Features
  • Revert mode switch notifications change.
  • Make simple engine compatiable with Plain Zhuyin in ibus-chewing.
  • Automatic snapshot selections when the curser is moved.
• Developer Features
  • Define version macros
    • CHEWING_VERSION_MAJOR
    • CHEWING_VERSION_MINOR
    • CHEWING_VERSION_PATCH

Full Changelog: v0.9.0-rc.1...v0.9.0-rc.2

v0.9.0-rc.1

What's New in libchewing 0.9.0-rc.1 (July 16, 2024)

• Features

  • Support two new input modes:
    • Fuzzy mode - support prefix search, partial zhuyin search, toneless input.
    • Simple mode - like the traditional input method on Windows 95 which does
      not perform any intelligent phrasing.
  • Allow space key for pagination regardless of space_is_select_key mode.
  • Merge DOWN and SPACE key behavior in pagination.
  • A new option to disable fullwidth toggle key.
  • Workman layout support.
  • Load embedded mini dictionary if system dictionaries were not found.
  • Show notification about mode switches triggered by input.
  • Automatically load extra dictionaries found in search path
    • ${CHEWING_PATH}/dictionary.d/*.dat

• Developer Features

  • BREAKING: Remove language_mode and character_form methods
  • BREAKING: Remove unused pinyin.tab file
  • BREAKING: Remove most unused C code
  • Bump minimum supported Rust version to 1.77
  • Enable ELF symbol versioning. All existing symbols are marked as version
    CHEWING_0.5 and new symbols from this release are marked as CHEWING_0.9.
  • A new set of configuration API:
    • chewing_config_has_option
    • chewing_config_get_int
    • chewing_config_set_int
    • chewing_config_get_str
    • chewing_config_set_str
  • New API to get runtime library version:
    • chewing_version
    • chewing_version_major
    • chewing_version_minor
    • chewing_version_patch
    • chewing_version_extra
  • New API to acknowledge output buffers:
    • chewing_ack

• Bug Fixes

  • Separate special handling by pinyin variants (#298)

• Dictionary

  • Default dictionary updates and fixes (#331)

• Performance

  • Optimize K shortest path algorithm to handle long pre-edit buffer. This
    allowed us to remove the special DP algorithm and keep only the graph search
    based algorithm in conversion.

• Testing

  • Add benchmarks for the conversion module
  • Add tests for options and default values
  • Add test for chewing_config_set_str
  • Test chewing_config_set_str with chewing.keyboard_type
  • Allow switching keyboard layout in genkeystroke
  • Add test for simple engine symbol input

• Miscellaneous Tasks

  • Drop outdated ChangeLog
  • Add option to turn off tests run
  • Use system corrosion if available
  • Regenerate chewing.h using latest cbindgen
  • Include CTest and use the built-in BUILD_TESTING option
  • Manage SQLite dependency with CMake
  • Print status about SQLite3 module
  • Remove unused test files
  • Bump Corrosion to v0.5
  • Fix building without using CMake presets
  • Force linking chewing_version obj file

• New Contributors

  • @chenrui333 made their first contribution in #560
  • @wusyong made their first contribution in #582

Full Changelog: v0.8.5...v0.9.0-rc.1