# it dies.
# Having this variable in your environment would break scripts because
-# you would cause "cd" to be be taken to unexpected places. If you
+# you would cause "cd" to be taken to unexpected places. If you
# like CDPATH, define it for your interactive shell sessions without
# exporting it.
unset CDPATH
-: ${GIT_DIR=.git}
-: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
-
die() {
echo >&2 "$@"
exit 1
}
-case "$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD 2>/dev/null)" in
-refs/*) : ;;
-*) false ;;
-esac &&
-[ -d "$GIT_DIR/refs" ] &&
-[ -d "$GIT_OBJECT_DIRECTORY/" ] ||
- die "Not a git repository."
+usage() {
+ die "Usage: $0 $USAGE"
+}
+
+set_reflog_action() {
+ if [ -z "${GIT_REFLOG_ACTION:+set}" ]
+ then
+ GIT_REFLOG_ACTION="$*"
+ export GIT_REFLOG_ACTION
+ fi
+}
+
+git_editor() {
+ : "${GIT_EDITOR:=$(git config core.editor)}"
+ : "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
+ case "$GIT_EDITOR,$TERM" in
+ ,dumb)
+ echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
+ echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb."
+ echo >&2 "Please set one of these variables to an appropriate"
+ echo >&2 "editor or run $0 with options that will not cause an"
+ echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)."
+ exit 1
+ ;;
+ esac
+ eval "${GIT_EDITOR:=vi}" '"$@"'
+}
+
+is_bare_repository () {
+ git rev-parse --is-bare-repository
+}
+
+cd_to_toplevel () {
+ cdup=$(git rev-parse --show-cdup)
+ if test ! -z "$cdup"
+ then
+ cd "$cdup" || {
+ echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
+ exit 1
+ }
+ fi
+}
+
+require_work_tree () {
+ test $(git rev-parse --is-inside-work-tree) = true ||
+ die "fatal: $0 cannot be used without a working tree."
+}
+
+get_author_ident_from_commit () {
+ pick_author_script='
+ /^author /{
+ s/'\''/'\''\\'\'\''/g
+ h
+ s/^author \([^<]*\) <[^>]*> .*$/\1/
+ s/'\''/'\''\'\'\''/g
+ s/.*/GIT_AUTHOR_NAME='\''&'\''/p
+
+ g
+ s/^author [^<]* <\([^>]*\)> .*$/\1/
+ s/'\''/'\''\'\'\''/g
+ s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
+
+ g
+ s/^author [^<]* <[^>]*> \(.*\)$/\1/
+ s/'\''/'\''\'\'\''/g
+ s/.*/GIT_AUTHOR_DATE='\''&'\''/p
+
+ q
+ }
+ '
+ encoding=$(git config i18n.commitencoding || echo UTF-8)
+ git show -s --pretty=raw --encoding="$encoding" "$1" |
+ LANG=C LC_ALL=C sed -ne "$pick_author_script"
+}
+
+if [ -z "$LONG_USAGE" ]
+then
+ LONG_USAGE="Usage: $0 $USAGE"
+else
+ LONG_USAGE="Usage: $0 $USAGE
+
+$LONG_USAGE"
+fi
+
+case "$1" in
+ -h|--h|--he|--hel|--help)
+ echo "$LONG_USAGE"
+ exit
+esac
+
+# Make sure we are in a valid repository of a vintage we understand.
+if [ -z "$SUBDIRECTORY_OK" ]
+then
+ : ${GIT_DIR=.git}
+ GIT_DIR=$(GIT_DIR="$GIT_DIR" git rev-parse --git-dir) || {
+ exit=$?
+ echo >&2 "You need to run this command from the toplevel of the working tree."
+ exit $exit
+ }
+else
+ GIT_DIR=$(git rev-parse --git-dir) || {
+ exit=$?
+ echo >&2 "Failed to find a valid git directory."
+ exit $exit
+ }
+fi
+
+test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
+ echo >&2 "Unable to determine absolute path of git directory"
+ exit 1
+}
+
+: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}