Subject: bug#53949: Setting (font-lock-mode 0) in very large buffers will cause highlight-symbol-at-point to fail to highlight all matches

From: Dongli Si <[email-masked]>
Date: Sat, 12 Feb 2022 14:38:04 +0800

emacs version is 27.2 (Installed using dnf on fedora 35 system)

test file: https://github.com/torvalds/linux/blob/v5.16/kernel/events/core.c

Step1: emacs -Q kernel/events/core.c
Step2: eval "(font-lock-mode 0)"
Step3: eval "(highlight-regexp "static")"

The "static" keyword at the end of the file is not highlighted.