What changed in editorconfig-checker from 3 to 4

4.0.1 (2026-09-04)

Bug Fixes

• bump golang.org/x/mod to v0.40.0 (3d2215c)
• ci: build docker images for all our platforms (a34a6ee)
• update pre-commit-config to use v4 of our repo (fcd68bf)

4.0.0 (2026-09-03)

⚠ BREAKING CHANGES

• internalize our packages (#619)It will no longer be possible to import our internal packages in your code. If you rely on one of our packages please let us know by opening an issue.
• migrate to goreleaser dockers_v2. (#617)This means we stop publishing the arch-suffixed images like 3.11.2-amd64 or 3.11.2-arm64v8. All these architectures are still provided in the multiarch tag 3.11.2.
• rename ec to editorconfig-checker (#371)
• .ecrc is no longer discovered as a default config file name. Rename .ecrc to .editorconfig-checker.json, or pass the file explicitly with --config .ecrc.
• Docker image tags no longer carry a leading v. Pull 3.12.0, 3.12 and 3 instead of v3.12.0, v3.12 and v3
• the deprecated SpacesAftertabs configuration key has been removed, use SpacesAfterTabs instead.
• stop accepting latin1 files as utf-8. (#598)Previously charset=utf-8 was satisfied with files encoded as latin1. While most of the latin1 range is identical to utf-8, not all is. If you request utf-8 but have latin1 encoded files expect these files to be reported as violations now.

Features

• add safe EditorConfig autofixes (#612) (2f4962c)
• auto-detect github-actions output format in CI (#606) (271c500)
• remove support for the deprecated .ecrc config file name (#603) (2062751)

Bug Fixes

• add missing space in wrong indentation type error message (#610) (e0f1b56)
• allow builds with Go 1.26 (#615) (343018a)
• consolidate error blocks that are interleaved with other errors (#601) (76b6313)
• correct end line in codeclimate formatter output (#602) (2476e7c)
• correct the -disable-end-of-line flag description (#600) (1615efc)
• drop a path whose content type could not be read (#599) (46995b1)
• handle unset for end_of_line and insert_final_newline (#594) (123ba31), closes #580
• remove ambiguity between potential folder and file matches (#611) (4c4f7d4)
• remove leading v from Docker image tags (#607) (3827a6c)
• remove retired goreportcard badge (2a9dd32)
• stop accepting latin1 files as utf-8. (#598)<br>Previously charset=utf-8 was satisfied with files encoded as latin1. While most of the latin1 range is identical to utf-8, not all is. If you request utf-8 but have latin1 encoded files expect these files to be reported as violations now. (4d84a77)
• typo in config, SpacesAftertabs => SpacesAfterTabs (#604) (bbc3f03)

Miscellaneous Chores

• internalize our packages (#619)<br>It will no longer be possible to import our internal packages in your code. If you rely on one of our packages please let us know by opening an issue. (d42bcb7)
• rename ec to editorconfig-checker (#371) (0e3b27f)

Continuous Integration

• migrate to goreleaser dockers_v2. (#617)<br>This means we stop publishing the arch-suffixed images like 3.11.2-amd64 or 3.11.2-arm64v8. All these architectures are still provided in the multiarch tag 3.11.2. (d4c1442)