v1.9.0
Automattic/harperv1.9.0Feb 27, 2026by github-actions[bot]
AI Summary
Adds Weirpack support for custom dictionaries and PowerShell comments support.
Key Highlights
- Weirpack support (load/unload)
- PowerShell comments support
- Chrome extension enabled on Substack
New Features
- Weirpack support
- PowerShell comments
- Substack support
- Grammar fixes (seem/seam, out of sync)
Full Release Notes
## What's Changed * Propagating newer methods of `SequenceExpr` through the codebase by @hippietrail in https://github.com/Automattic/harper/pull/2759 * feat(core): many more Weir rules by @elijah-potter in https://github.com/Automattic/harper/pull/2742 * feat(chrome-ext): the ability to load/unload Weirpacks by @elijah-potter in https://github.com/Automattic/harper/pull/2752 * fix(chrome-ext): suggestions being displayed as `0` by @elijah-potter in https://github.com/Automattic/harper/pull/2757 * feat: PowerShell comments support by @elijah-potter in https://github.com/Automattic/harper/pull/2762 * feat(core): dictionary additions by @scop in https://github.com/Automattic/harper/pull/2636 * feat(cli): support --no-color flag and NO_COLOR env var by @verri in https://github.com/Automattic/harper/pull/2738 * fix(core): adjust ToTwoToo linter to ignore transitions by @elijah-potter in https://github.com/Automattic/harper/pull/2761 * Dictionary curation for Feb 20, 2026 by @hippietrail in https://github.com/Automattic/harper/pull/2768 * build(deps): bump strum from 0.27.2 to 0.28.0 by @dependabot[bot] in https://github.com/Automattic/harper/pull/2782 * build(deps): bump uuid from 1.20.0 to 1.21.0 by @dependabot[bot] in https://github.com/Automattic/harper/pull/2781 * build(deps): bump anyhow from 1.0.101 to 1.0.102 by @dependabot[bot] in https://github.com/Automattic/harper/pull/2779 * feat: for argument sake→for argument's sake by @hippietrail in https://github.com/Automattic/harper/pull/2774 * build(deps): bump libfuzzer-sys from 0.4.10 to 0.4.12 by @dependabot[bot] in https://github.com/Automattic/harper/pull/2778 * fix(core): make the `ItsPossessive` rule more robust by @elijah-potter in https://github.com/Automattic/harper/pull/2769 * build(deps): bump clap from 4.5.57 to 4.5.60 by @dependabot[bot] in https://github.com/Automattic/harper/pull/2780 * chore: Curate dictionary by @anyllmarkevich in https://github.com/Automattic/harper/pull/2724 * feat: wrote→rote by @hippietrail in https://github.com/Automattic/harper/pull/2794 * fix: don't flag "May of" by @hippietrail in https://github.com/Automattic/harper/pull/2795 * Flag plural "damages" when not used for judicial compensation by @hippietrail in https://github.com/Automattic/harper/pull/2365 * Dictionary curation 2026 02 22 by @hippietrail in https://github.com/Automattic/harper/pull/2785 * feat: add words from fantasy, politics, religion, and adverbs by @rauletaveras in https://github.com/Automattic/harper/pull/2643 * feat(chrome-ext): enable on all Substack sites by @elijah-potter in https://github.com/Automattic/harper/pull/2800 * chore: add "one fowl swoop" to "one foul swoop", rename from `InOneFellSwoop` by @hippietrail in https://github.com/Automattic/harper/pull/2758 * fix(core): stop flagging "Czech Republic" as outdated by @NaveenPrasanth in https://github.com/Automattic/harper/pull/2797 * fix: don't flag "can of" by @hippietrail in https://github.com/Automattic/harper/pull/2814 * feat(core): create rule to correct `now way` by @elijah-potter in https://github.com/Automattic/harper/pull/2806 * fix(harper-tex): parse triple-hyphens as an em-dash by @elijah-potter in https://github.com/Automattic/harper/pull/2805 * fix(core): coverage for confusion of `they're`/`there`/`their` by @elijah-potter in https://github.com/Automattic/harper/pull/2798 * fix(obsidian): avoid command palette crashes from null tooltip entries by @stanley-910 in https://github.com/Automattic/harper/pull/2804 * feat(web): add loading message to lazily-loaded editor by @elijah-potter in https://github.com/Automattic/harper/pull/2817 * feat: support adjectives in "on accident" by @hippietrail in https://github.com/Automattic/harper/pull/2828 * fear: for most part→for the most part by @hippietrail in https://github.com/Automattic/harper/pull/2827 * feat: seam→seem by @hippietrail in https://github.com/Automattic/harper/pull/2826 * feat: out of sink→out of sync/synch by @hippietrail in https://github.com/Automattic/harper/pull/2829 * feat: in hurry→in a hurry by @hippietrail in https://github.com/Automattic/harper/pull/2825 * feat(core): address edge cases in `MissingTo` rule by @elijah-potter in https://github.com/Automattic/harper/pull/2818 * feat(core): create rule to detect confusion between `principle of` and `principal of` by @elijah-potter in https://github.com/Automattic/harper/pull/2799 * feat: do diligence→due diligence/do due diligence by @hippietrail in https://github.com/Automattic/harper/pull/2810 * fix(obsidian): find temporary fix for escape button override by @elijah-potter in https://github.com/Automattic/harper/pull/2819 * feat: all hell break out→all hell break loose by @hippietrail in https://github.com/Automattic/harper/pull/2813 * refactor: heuristic debugging easier by @hippietrail in https://github.com/Automattic/harper/pull/2508 * feat: if only there was→if only there were, etc. by @hippietrail in https://github.com/Automattic/harper/pull/2823 ## New Contributors * @anyllmarkevich made their first contribution in https://github.com/Automattic/harper/pull/2724 * @NaveenPrasanth made their first contribution in https://github.com/Automattic/harper/pull/2797 **Full Changelog**: https://github.com/Automattic/harper/compare/v1.8.0...v1.9.0