I've been using a Yubikey for years, now, and on each computer I use, I install their U2F (Universal 2 Factor) bindings for the linux Pluggable Authentication Modules (PAM) support, requiring usage of my Yubikey for login and sudo access.

Today, I updated my work machine, and didn't even notice that there were new pamu2fcfg and libpam-u2f packages, updating to version 1.3.1; I never really care, as everything just works. But when I came back to my machine after lunch, I was unable to login: I'd provide my password, but my Yubikey wouldn't activate.

I've been using Logseq for a few years now, and even blogged about it last year. I appreciate how it surfaces todo items on the upcoming day(s), as well as anything I've given a due date in the coming week. That said, one exercise I engage each week is a weekly prioritization for the upcoming week, where I note down the items most important for me to complete. While many of these might have due dates, some might be aspirational or more along the lines of things I can do when I have a few minutes of down time between meetings.

I've recently written several blog posts for Zend (one of the brands I help manage at Perforce) covering changes in the recently released PHP 8.4. If you're curious what to look out for, and how to use some of the new major features, they're worth a read:

• What's New in PHP 8.4: Features, Changes, and Deprecations
• A Guide to PHP 8.4 Property Hooks
• Asymmetric Visibility in PHP 8.4: What It Means for PHP Teams
• HTTP Verbs Changes in PHP 8.4

tl;dr: In Vivaldi, middle clicking the separator between the tab sidebar and the web page will either collapse or expand the sidebar; when collapsed, it shows just the tab favicons, and the workspace selector icon.

If you want to know how I got to that point, read on.

One of my goals when adopting Wezterm was to replace tmux. To do that, I needed not just the ability to open additional tabs/windows and to split into panes, but also a feature I'd come to rely on heavily in the tmux ecosystem: session saving and restoration, which I accomplished with the tmux-resurrect plugin.

I tried a number of options, but was eventually pointed to resurrect.wezterm.

In this post, I'll detail how I've configured it, as well as a workflow I've developed for interacting with it that gives me (a) reasonable satisfaction that I won't lose work, and (b) additional flexibility for branching off work.

As I expand my Wezterm usage, I find that either (a) a third-party module will have default keybinding configuration I want to adopt, and/or (b) I want to segregate keybindings related to specific contexts into separate modules to simplify my configuration.

Keybindings are stored as a list of tables (what we call associative arrays in PHP). Simple, right?

Unlike in other languages I use, Lua doesn't have a built-in way to merge lists.

So, I wrote up a re-usable function.

Wezterm has a utility for raising GUI system notifications, window:toast_notification(), which is a handy way to bring notifications to you that you might otherwise miss if the window is hidden or if a given tab is inactive.

However, on Linux, it's a far from ideal tool, at least under gnome-shell. (I don't know how it does on KDE or other desktop environments.) It raises the notification, but the notification never times out, even if you provide a timeout value (fourth argument to the function). This means that you have to manually dismiss the notification, which can be annoying, particularly if the notifications happen regularly.

So, I worked up my own utility.

Quick little note mainly for myself: Lua regex is different than PCRE. The big place it differs is in where you escape pattern matching characters (e.g. ., ?, +, etc.). In PCRE, you escape these with a leading backslash (e.g., \., \?, \+). However, with Lua, you use the % character: %., %?, %+.

I recently noticed my CPU usage was high, and it was due to my open Vivaldi browser. I wasn't sure what tab was causing the issue, so I searched to see if Vivaldi had any tools for reporting this.

It turns out that Shift-Esc will open a task manager, and you can sort on any of:

• Task (a string representing high level things like the browser as a whole, GPU process, worker tabs, and more)
• Memory footprint
• CPU (this was what I was interested in!)
• Network usage
• Process ID

You can select any task to end its process.

I was able to quickly track down the issue to a background worker running for a PWA window I'd closed earlier, and ended the process.