en Timj’s Bits and Banter https://testbit.eu/ 60 CC BY-NC 3.0 - Creative Commons Attribution-NonCommercial 3.0 Iris - https://github.com/tim-janik/iris/ https://testbit.eu/2026/imagewmark-0.6.0 https://testbit.eu/2026/imagewmark-0.6.0 Thu, 26 Mar 2026 21:35:08 +0000 Testbit What Is Imagewmark? How do you embed a secret message into an image that survives cropping, scaling, and compression without needing the original source to decode it? Imagewmark is a Free Software tool that does exactly this. It embeds encrypted invisible digital watermarks (128 bits) into images… https://testbit.eu/2026/jj-fzf-0.38.0 https://testbit.eu/2026/jj-fzf-0.38.0 Wed, 25 Mar 2026 02:39:01 +0000 Testbit What Is jj-fzf? The Jujutsu VCS has flexible expressions for specifying revision sets and allows non-linear editing of (ancestry) commits. jj-fzf is an interactive TUI that turns the jj log output into a fast keyboard driven control panel. Based on fzf, it allows live revset editing, instant diff… https://testbit.eu/2025/jj-fzf-in-emacs https://testbit.eu/2025/jj-fzf-in-emacs Wed, 29 Jan 2025 23:54:14 +0000 Testbit Introduction Built on jj and fzf, jj-fzf offers a text-based user interface (TUI) that simplifies complex versioning control operations like rebasing, squashing, and merging commits. This post will guide you through integrating jj-fzf into your Emacs workflow, allowing to switch between emacs and jj… https://testbit.eu/2025/jj-fzf-0.25.0 https://testbit.eu/2025/jj-fzf-0.25.0 Sat, 25 Jan 2025 19:06:17 +0000 Testbit The jj-fzf project has just seen a new release with version 0.25.0. This brings some new features, several smaller improvements, and some important changes to be aware of. For the uninitiated, jj-fzf is a feature-rich command-line tool that integrates jj and fzf, offering fast commit navigation with… https://testbit.eu/2024/jj-fzf-tui-jujutsu https://testbit.eu/2024/jj-fzf-tui-jujutsu Mon, 04 Nov 2024 02:32:53 +0000 Testbit JJ-FZF is a TUI (Terminal-based User Interface) for Jujutsu, built on top of fzf. It centers around the jj log view, providing key bindings for common operations on JJ/Git repositories. About six months ago, I revisited JJ, drawn in by its promise of Automatic rebase and conflict resolution. I have… https://testbit.eu/2023/cgroup-cpuset https://testbit.eu/2023/cgroup-cpuset Sat, 30 Dec 2023 23:38:09 +0000 Testbit I recently worked on some hashtable lookup code that could benefit from SIMD optimizations and microbenchmarking of modulus and hash functions to improve the code quality. However, modern CPUs are complex and have various components that cause fluctuations during benchmarks, such as core design… Thu, 26 Mar 2026 22:26:30 +0000