I guess I’m going to start using tmux because I have to work on a system that doesn’t have the xterm package and all sorts of things wonky.

(this was an answer to a StackOverflow question that I didn’t post because it didn’t quite fit, but I use too keen on showing off the flip-flop operator to get rid of it all)

I also put this in Reddit

A few other places:

• perlfaq5: How do I change, delete, or insert a line in a file, or append to the beginning of a file?
• Respect the global state of the flip flop operator
• Make exclusive flip-flop operators

Most versions of Perl (v5.38, v5.40, and so on) updates the Unicode Character Database (UCD), and each version of the UCD has new features, often new blocks, characters, or adjustments to property settings. But, which version do you have?

I tried this task a long time ago, in some place I don’t remember, looking at the presence of properties and other things, but I don’t want to create a long chain of things to query to rule out versions. That’s just too much work if I can cheat.

How do you determine if a Perl module is “alive”? This question from /r/perl, and I think it deserves a thoughtful answer. I did answer in that thread, but I thought I’d expand that.

I need a container for Perl v5.8, and I want it to be as small as I can make it. Starting with debian:bookworm-slim, I’d download the v5.8 source, modify it with patchperl, then compile it. But, there were problems.