0.70.0

Wilfred/difftastic0.70.0Aug 7, 2026by github-actions[bot]

AI Summary

Improves performance for directory diffs and adds support for Dockerfiles and Fish shell, while also improving error reporting for parsing issues.

Key Highlights

Improved diffing performance, particularly for directories.
Files with parse errors now report the position of the first error.
Added support for Dockerfiles and Fish shell.
Improved support for Dart, Emacs Lisp, Erlang, Java, OCaml, PHP, Protocol Buffers, and TOML.

Breaking Changes

Removed support for Elvish and SCSS.

New Features

Added support for Dockerfiles and Fish shell.
Improved support for Dart, Emacs Lisp, Erlang, Java, OCaml, PHP, Protocol Buffers, and TOML.

Full Release Notes

Difftastic is a structural diff tool that understands syntax. See [the manual](https://difftastic.wilfred.me.uk/introduction.html) to get started, and [the changelog](https://github.com/Wilfred/difftastic/blob/master/CHANGELOG.md) for historical changes.

### Diffing

Improved diffing performance, particularly when diffing directories.

### Parsing

Files with parse errors now report the position of the first error, to help investigate issues.

Added support for Dockerfiles and Fish shell.

Improved support for Dart, Emacs Lisp, Erlang, Java, OCaml, PHP, Protocol Buffers and TOML.

Removed support for Elvish and SCSS (upstream parsers are no longer maintained).

### Display

Fixed an issue where files with tabs were not always aligned correctly in some build configurations.

Fix an alignment issue with line numbers in side-by-side mode.

### Release

Fixed an issue where prebuilt binaries on GitHub did not respect Cargo.lock, so they used newer library versions than tested on CI. This caused rendering bugs in source code with tabs.