# Difftastic 0.65.0

- Product: Difftastic (https://whatsnew.fyi/product/difftastic)
- Vendor: Wilfred Hughes
- Date: 2025-09-24
- Version: 0.65.0
- Original notes: https://github.com/Wilfred/difftastic/releases/tag/0.65.0
- Permalink: https://whatsnew.fyi/product/difftastic/releases/0.65.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **changed** — Increased the default page size of Jemalloc so difftastic works on systems with large page sizes
- **changed** — Difftastic now requires Rust 1.75 to build
- **changed** — Updated Clojure, Common Lisp, Rust and Zig parsers
- **changed** — Improved parsing of Kotlin
- **changed** — Text encoding detection is now stricter, fixing more cases where binary files were treated as text
- **added** — Add the --override-binary option to force files to be treated as binary rather than text
- **changed** — When diffing binary files, file sizes are now shown to help see big changes

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

###### Build

Incrased the default page size of Jemalloc, so difftastic should work on systems with large page sizes (typically aarch64, i.e. Arm).

difftastic now requires Rust 1.75 to build.

###### Parsing

Updated Clojure, Common Lisp, Rust and Zig parsers. Improved parsing of Kotlin.

Text encoding detection is now stricter, fixing more cases where binary files were treated as text.

Added the `--override-binary` option to force files to be treated as binary rather than text.

###### Display

When diffing binary files, the file sizes are now shown to help see big changes.