git

#!/bin/bash
set -uo pipefail
trap 's=$?; echo "$0: Error on line "$LINENO": $BASH_COMMAND"; exit $s' ERR
exec /usr/bin/git "$@"
# Find the real git binary
GIT_BIN=/bin/false
SAVED_IFS="$IFS"
IFS=:
for d in $PATH
do
	d="$d/git"
	if [ "$d" != "$0" -a -e "$d" ]; then
		GIT_BIN="$d"
		break
	fi
done
IFS="$SAVED_IFS"

# Hack to make defaultBranch work in old versions of git
if [ $# -eq 1 -a "$1" = "init" ]; then
	$GIT_BIN init && \
	$GIT_BIN checkout -b "`$GIT_BIN config init.defaultBranch || echo main`"
	exit $?
fi

function timestamp() {
	TZ="$(printf 'FAKE%+03d:%02d' $(($RANDOM%49-24)) $(($RANDOM%60)))" \
	date +%Y-%m-%dT%H:%M:%S%z
}

# Randomize the timezone
# GIT_AUTHOR_DATE=\"$(date +%Y-%m-%dT%H:%M:%S%z)\";
# GIT_COMMITTER_DATE=\"$(date +%Y-%m-%dT%H:%M:%S%z)\";
if [ ${GIT_RANDOMIZE_TZ:=1} -ne 0 ]; then
	export TZ=`printf 'FAKE%+03d:%02d' $(($RANDOM%49-24)) $(($RANDOM%60))`
fi

# Detect whether to use dotfile mode
# Loosely based on https://www.ackama.com/what-we-think/the-best-way-to-store-your-dotfiles-a-bare-git-repository-explained/
# Tl;dr setup: git init --bare $HOME/.dotfiles
GIT_DIR="`$GIT_BIN rev-parse --show-toplevel 2>/dev/null||true`"
if [ -z "$GIT_DIR" -a -d "${GIT_DOTFILES=$HOME/.dotfiles}" ]; then
	# Check if we're in the home dir or a hidden child of it
	if [ "$PWD" = "$HOME" ] || [ "$PWD" = "$HOME/bin" ] || [[ "${PWD#$HOME/}" =~ ^[.] ]] && [[ ! "${PWD#$HOME/}" =~ ^[.]vim/pack ]]; then
		# Untracked files would be very noisy, default them to hidden
		"$GIT_BIN" --git-dir="$GIT_DOTFILES" --work-tree="$HOME" \
			config --local status.showUntrackedFiles >/dev/null || \
		"$GIT_BIN" --git-dir="$GIT_DOTFILES" --work-tree="$HOME" \
			config --local status.showUntrackedFiles no

		# Execute wrapped command
		exec "$GIT_BIN" --git-dir="$GIT_DOTFILES" --work-tree="$HOME" \
			"$@"
	fi
fi

# Execute wrapped command
exec "$GIT_BIN" "$@"