Bump chardet from 5.2.0 to 7.3.0

[dependabot]

Bumps chardet from 5.2.0 to 7.3.0.

Release notes

Sourced from chardet's releases.

7.3.0

License

• 0BSD license — the project license has been changed from MIT to 0BSD, a maximally permissive license with no attribution requirement. All prior 7.x releases should also be considered 0BSD licensed as of this release.

Features

• Added mime_type field to detection results — identifies file types for both binary (via magic number matching) and text content. Returned in all detect(), detect_all(), and UniversalDetector results. (#350)
• New pipeline/magic.py module detects 40+ binary file formats including images, audio/video, archives, documents, executables, and fonts. ZIP-based formats (XLSX, DOCX, JAR, APK, EPUB, wheel, OpenDocument) are distinguished by entry filenames. (#350)

Bug Fixes

• Fixed incorrect equivalence between UTF-16-LE and UTF-16-BE in accuracy testing — these are distinct encodings with different byte order, not interchangeable

Performance

• Added 4 new modules to mypyc compilation (orchestrator, confusion, magic, ascii), bringing the total to 11 compiled modules
• Capped statistical scoring at 16 KB — bigram models converge quickly, so large files no longer score the full 200 KB. Worst-case detection time dropped from 62ms to 26ms with no accuracy loss.
• Replaced dataclasses.replace() with direct DetectionResult construction on hot paths, eliminating ~354k function calls per full test suite run

Build

• Added riscv64 to the mypyc wheel build matrix — prebuilt wheels are now published for RISC-V Linux alongside existing architectures (#348, thanks @​gounthar)

chardet 7.2.0

Features

• Added include_encodings and exclude_encodings parameters to detect(), detect_all(), and UniversalDetector — restrict or exclude specific encodings from the candidate set, with corresponding -i/--include-encodings and -x/--exclude-encodings CLI flags (#343)
• Added no_match_encoding (default "cp1252") and empty_input_encoding (default "utf-8") parameters — control which encoding is returned when no candidate survives the pipeline or the input is empty, with corresponding CLI flags (#343)
• Added -l/--language flag to chardetect CLI — shows the detected language (ISO 639-1 code and English name) alongside the encoding (#342)

Fixes

• Fixed null-separated ASCII data being misdetected as UTF-16-BE (#346, #347)

Full changelog: https://chardet.readthedocs.io/en/latest/changelog.html

chardet 7.1.0

Features

• Added PEP 263 encoding declaration detection — # -*- coding: ... -*- and # coding=... declarations on lines 1–2 of Python source files are now recognized with confidence 0.95 (#249)
• Added chardet.universaldetector backward-compatibility stub so that from chardet.universaldetector import UniversalDetector works with a deprecation warning (#341)

Fixes

• Fixed false UTF-7 detection of ASCII text containing ++ or +word patterns (#332)
• Fixed 0.5s startup cost on first detect() call — model norms are now computed during loading instead of lazily iterating 21M entries (#333)
• Fixed undocumented encoding name changes between chardet 5.x and 7.0 — detect() now returns chardet 5.x-compatible names by default (#338)
• Improved ISO-2022-JP family detection — recognizes ESC sequences for ISO-2022-JP-2004 (JIS X 0213) and ISO-2022-JP-EXT (JIS X 0201 Kana)
• Fixed silent truncation of corrupt model data (iter_unpack yielded fewer tuples instead of raising)

... (truncated)

Changelog

Sourced from chardet's changelog.

7.3.0 (2026-03-24)

License:

• 0BSD license — the project license has been changed from MIT to 0BSD <https://opensource.org/license/0bsd>, a maximally permissive license with no attribution requirement. All prior 7.x releases should also be considered 0BSD licensed as of this release. (Dan Blanchard <https://github.com/dan-blanchard>)

Features:

• Added mime_type field to detection results — identifies file types for both binary (via magic number matching) and text content. Returned in all detect(), detect_all(), and UniversalDetector results. (Dan Blanchard <https://github.com/dan-blanchard>, [#350](https://github.com/chardet/chardet/issues/350) <https://github.com/chardet/chardet/pull/350>)
• New pipeline/magic.py module detects 40+ binary file formats including images, audio/video, archives, documents, executables, and fonts. ZIP-based formats (XLSX, DOCX, JAR, APK, EPUB, wheel, OpenDocument) are distinguished by entry filenames. (Dan Blanchard <https://github.com/dan-blanchard>, [#350](https://github.com/chardet/chardet/issues/350) <https://github.com/chardet/chardet/pull/350>)

Bug Fixes:

• Fixed incorrect equivalence between UTF-16-LE and UTF-16-BE in accuracy testing — these are distinct encodings with different byte order, not interchangeable (Dan Blanchard <https://github.com/dan-blanchard>_)

Performance:

• Added 4 new modules to mypyc compilation (orchestrator, confusion, magic, ascii), bringing the total to 11 compiled modules (Dan Blanchard <https://github.com/dan-blanchard>_)
• Capped statistical scoring at 16 KB — bigram models converge quickly, so large files no longer score the full 200 KB. Worst-case detection time dropped from 62ms to 26ms with no accuracy loss. (Dan Blanchard <https://github.com/dan-blanchard>_)
• Replaced dataclasses.replace() with direct DetectionResult construction on hot paths, eliminating ~354k function calls per full test suite run (Dan Blanchard <https://github.com/dan-blanchard>_)

Build:

• Added riscv64 to the mypyc wheel build matrix — prebuilt wheels are now published for RISC-V Linux alongside existing architectures

... (truncated)

Commits

• 9402975 docs: clarify that git tags have no v prefix in CLAUDE.md
• 80f5d95 docs: explicitly list all performance.rst tables in update skill
• 4ca09ed docs: single alphabetical table for supported MIME types
• 78c3551 docs: add supported MIME types page with auto-generation script
• d59bbba docs: fix stale numbers, add mime_type, update pipeline and mypyc lists
• 601cde1 docs: add riscv64 wheels and UTF-16 endianness fix to 7.3.0 changelog
• f00bd2d docs: finalize 7.3.0 changelog with 2026-03-24 release date
• 3ed9b3e docs: remove EncodingEra from What's New (was added in 6.x)
• dab6952 docs: update What's New section with mime_type and encoding filters
• 3466c96 docs: say chardet 7, not 7.0, in README headers
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 54.72%. Comparing base (b98e44b) to head (97539a9).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1655      +/-   ##
==========================================
- Coverage   54.74%   54.72%   -0.02%     
==========================================
  Files         335      335              
  Lines       27400    27400              
==========================================
- Hits        15000    14995       -5     
- Misses      12400    12405       +5     

Flag	Coverage Δ
functionaltests	0.00% <ø> (ø)
unittests	54.72% <ø> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.