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## Summary of the Pull Request This PR improves fuzzy matching in Command Palette by: - Precomputing normalized strings to enable faster comparisons - Reducing memory allocations during matching, effectively down to zero It also introduces several behavioral improvements: - Strips diacritics from the normalized search string to improve matching across languages - Suppresses the same-case bonus when the query consists entirely of lowercase characters -- reflecting typical user input patterns - Allows skipping word separators -- enabling queries like Power Point to match PowerPoint This implementation is currently kept internal and is used only on the home page. For other scenarios, the `FuzzyStringMatcher` from `Microsoft.CommandPalette.Extensions.Toolkit` is being improved instead. `PrecomputedFuzzyMatcher` offers up to a 100× performance improvement over the current `FuzzyStringMatcher`, and approximately 2–5× better performance compared to the improved version. The improvement might seem small, but it adds up and becomes quite noticeable when filtering the entire home page—whether the user starts a new search or changes the query non-incrementally (e.g., using backspace). <!-- Please review the items on the PR checklist before submitting--> ## PR Checklist - [x] Closes: #45226 - [x] Closes: #44066 - [ ] **Communication:** I've discussed this with core contributors already. If the work hasn't been agreed, this work might be rejected - [ ] **Tests:** Added/updated and all pass - [ ] **Localization:** All end-user-facing strings can be localized - [ ] **Dev docs:** Added/updated - [ ] **New binaries:** Added on the required places - [ ] [JSON for signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json) for new binaries - [ ] [WXS for installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs) for new binaries and localization folder - [ ] [YML for CI pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml) for new test projects - [ ] [YML for signed pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml) - [ ] **Documentation updated:** If checked, please file a pull request on [our docs repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys) and link it here: #xxx <!-- Provide a more detailed description of the PR, other things fixed, or any additional comments/features here --> ## Detailed Description of the Pull Request / Additional comments <!-- Describe how you validated the behavior. Add automated tests wherever possible, but list manual validation steps taken as well --> ## Validation Steps Performed