fish_history corrupted with NUL bytes

[planet36]

(Adaptedfrom this comment #10300 (comment))

I've been increasingly encountering this problem for the past few months. It manifests after I first log in. When I type history, no history is printed, even though the fish_history file still exists and contains earlier history.

The last time it happened, I noticed there were embedded NUL bytes in fish_history with a newer entry. (screenshot included)
When I removed the entry containing the NUL bytes, and logged out & in, things worked normally.

(Before staring X)
$ echo $TERM

linux

(Within X)
$ echo $TERM

tmux-256color

$ fish --version

fish, version 3.7.1

$ uname -srm

Linux 6.8.9-arch1-1 x86_64

$ fisher list

jorgebucaran/fisher
jethrokuan/z

$ tmux -V

tmux 3.4

/ is ext4

$ wc --lines fish_history.BAD

141748 fish_history.BAD

[faho]

Let's leave this in #10300 for now, I'm not convinced it's a separate issue.