pre-commit

#!/bin/zsh
#
# A git hook to make sure user.email exists before committing
# Used to be you could give a user.email of "(none)" and that would
# cause failure to commit, but that's gone now. :-(
#
# Instead, it assumes the following aliases in .gitconfig:
# 	email-public = "!f() { git config user.email $(git config
#         --get user.publicemail); git config --get user.email; }; f"
# 	email-work = "!f() { git config user.email $(git config
#        --get user.workemail); git config --get user.email; }; f"
#
# And definitions:
# [user]
# 	publicemail = [email protected]
# 	workemail = [email protected]
#
# If the two are the same, just set it.


EMAIL=$(git config user.email)

if [[ -z "$EMAIL" ]]; then
    # user.email is empty
    public_email=$(git config --get user.publicemail)
    work_email=$(git config --get user.workemail)

    if [[ "${public_email}" == "${work_email}" ]]; then
	git email-public
	exit 0
    fi

    # Work and public emails are different, so abort commit

    cat >&2 <<EOF
ERROR: [pre-commit hook] Aborting commit because user.email is missing.
Configure user.email for this repository by running either:
  '$ git email-public'
or
'$ git email-work'
EOF
    exit 1
else
    # user.email is not empty
    exit 0
fi