Locale

LANGUAGE > LC_ALL > LANG
LANG provides a default for any category not set
LC_ALL overrides category-specific variables
/etc/locale.conf is a systemdism from localectl
If locale shows POSIX then foreign characters (e.g. Arabic) won’t display correctly unless LC_CTYPE=C.UTF-8 or LANG=en_US.UTF-8 are used

- *C.UTF-8 (default musl locale, not a glibcism, lightest possible UTF-8 locale without requiring glibc)
- en_US.UTF-8
- C (aka POSIX, strict 7-bit single-byte ASCII, disables UTF-8)

## TERM
- *linux (tty, 8 colors)
- xterm-256color (default)
- tmux-256color vs screen-256color

## `POSIXLY_CORRECT` should be unset

Do not set MUSL_LOCPATH for musl-locales as it messes up install path (relative $PWD)
POSIX.1 recommends restricting filenames to letters (a-z, A-Z), numbers (0-9), period (.), dash (-), and underscore(_)

References