http://www.heyuan110.com/tags/fish-shell/Recent content in Fish Shell on Bruce on AI EngineeringHugoenSat, 18 Apr 2026 10:00:00 +0800http://www.heyuan110.com/posts/linux/2026-04-18-fish-shell-rust-2026/Sat, 18 Apr 2026 10:00:00 +0800http://www.heyuan110.com/posts/linux/2026-04-18-fish-shell-rust-2026/<p><img src="http://www.heyuan110.com/posts/linux/2026-04-18-fish-shell-rust-2026/cover.webp" alt="Fish shell 4.6 Rust rewrite review 2026" loading="lazy" decoding="async" fetchpriority="low" width="1200" height="630" /> </p> <p>Let me open with the contrarian line. <strong>Fish shell 4.6, released March 28, 2026, is the most polished interactive shell I have ever used. It is also the wrong choice for your default shell in the AI agent era.</strong></p> <p>Those two claims are not in conflict. They are the whole point of this review.</p> <p>I have been running fish as a front-end for the last nine months, since the 4.0 Rust rewrite landed in February 2025. I read the release notes for every point release, I moved my zsh configuration over, I watched the Claude Code bug tracker fill up with <code>fish</code> in the title, and I eventually settled into a dual-shell setup that I think most AI-heavy developers should copy. This article is that conclusion, backed by numbers.</p>