January 2026

If Firefox on macOS enters the system’s standard fullscreen mode and you find it annoying that pressing the Esc key exits fullscreen, this article explains how to prevent that by changing `browser.fullscreen.exit_on_escape` to `false` in `about:config`. Exiting fullscreen via F11 or the menu remains available.

Explains why Chromium’s remote debugging port (9222) cannot be exposed externally when running inside a Docker container—because from M113 onward, Chromium forces the bind address from `0.0.0.0` to `127.0.0.1`—and shows how to safely forward `9222` to `127.0.0.1:9223` using `socat` to enable Chrome DevTools Protocol (CDP) connections.

If you want Git to ignore local changes to files that are already tracked, use `git update-index --skip-worktree` rather than `.gitignore`. This article explains how to set it up, how to undo it, how to list skipped files, the differences from `assume-unchanged`, and what to do when pulling.

Explains how to extract only `.event.delta.text` in real time from Claude Code’s `--output-format=stream-json` (JSON Lines). It shows how to avoid newline issues caused by `jq -r`, and instead use `jq -j` to concatenate fragmented text while still rendering `\n` as actual line breaks.