git-sh-i18n--envsubst - Git's own envsubst(1) for i18n fallbacks
This is not a command the end user would want to run. Ever. This documentation is meant for people who are studying the plumbing scripts and/or are writing new ones.
git sh-i18n--envsubst is Git’s stripped-down copy of the GNU envsubst(1) program that comes with the GNU gettext package. It’s used internally by git-sh-i18n(1) to interpolate the variables passed to the eval_gettext function.
No promises are made about the interface, or that this program won’t disappear without warning in the next version of Git. Don’t use it.
Part of the git(1) suite