git pre-commit hook to block commits that have URLs containing 'en-us'

pre-commit

#!/bin/sh
#

if git rev-parse --verify HEAD >/dev/null 2>&1
then
    against=HEAD
else
    # Initial commit: diff against an empty tree object
    against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi

# Redirect output to stderr.
exec 1>&2

for i in `git diff --cached --name-only`
do
    # check only what is staged
    if echo `git show :$i` | grep -qEi "(http|https)://\S+/en-us"; then
        echo "Commit rejected:"
        echo $i " contains URL(s) with 'en-us'."
        echo "To bypass this commit check, add --no-verify to your git commit command."
        exit 1
    fi
done
exit 0

To use:

1. save it as a file named pre-commit in the .git/hooks directory in your local github repo.
2. when you run git commit, and your commit includes a URL with the string en-us, the commit will be rejected and a message displayed.
3. If you need to bypass the check (for example, the string is not in a file you modified,) use the --no-verify parameter with your git commit.