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v1.39.0

ankitects/ankiv1.39.0Mar 6, 2026by Schniz

AI Summary

This release focuses on performance optimizations for shell startup and improved robustness for the `--use-on-cd` hook. It introduces new convenience flags for installation and default version queries, alongside Rust toolchain updates and documentation improvements.

Key Highlights

  • Shell startup is now faster by optimizing `fnm env --use-on-cd` execution.
  • Improved robustness for the `--use-on-cd` hook, including zsh deduplication and Windows CMD fixes.
  • New `fnm install --use` flag allows automatic switching to the installed version.
  • The `fnm default` command now returns the current default version without arguments.

New Features

  • New `fnm install --use` flag for automatic version switching post-install.
  • Enhanced `--use-on-cd` hook robustness (zsh deduplication, Windows CMD path fixes).
  • Updated Rust toolchain to version 1.88.

Full Release Notes

**Performance & UX Improvements:**
- Shell startup is now faster: `fnm env --use-on-cd` applies the initial version during `fnm env` itself, eliminating an extra `fnm use` subprocess
- Improved `--use-on-cd` shell hook robustness (zsh hook deduplication on re-source, Windows CMD fixes for paths with spaces and drive changes)

**New Features:**
- `fnm install --use` flag to automatically switch to the version after installing
- `fnm default` (with no arguments) now returns the current default version

**Internal:**
- Rust toolchain upgraded to 1.88

**Docs/Maintenance:**
- Various README improvements, typo fixes, and CI workflow fixes

**Thanks to the new contributors:** @SunsetTechuila, @MangelMaxime, @CodingWithAnxiety, @zeroberry, @isaacl :hat-tip: