Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//usr/share/nano/tex.nanorc

 ## Here is a short example for TeX files.

syntax "tex" "\.tex$"
magic "(La)?TeX document"
linter chktex -v0 -q -I
comment "%"

icolor green "\\.|\\[A-Z]*"
color magenta "[{}]"
color blue "(^|[^\])%.*"