$LC_MESSAGES  –  LC_MESSAGES

$LC_MESSAGES defines the languages used by the special $"" message handling of your shell. $LC_ALL is overriding $LC_MESSAGES. If $LC_MESSAGES is not set, then the value of $LANG is used as a fallback.

Links

• POSIX specification
• Bash manual on LC_MESSAGES
• Bash manual on locale translation
• Z Shell manual