+fatal() {
+ echo "$SELF: fatal: $1" >&2
+ [ -z $2] && exit 1
+ exit $2
+}
+
+# We need to run getops as soon as possible so we catch -d and other
+# options that will modify our behaviour.
+# Commands are handled at the end of this script.
+while getopts "c:dv" flag; do
+ if [ x"$1" = x'-d' ] || [ x"$1" = x'--debug' ]; then
+ set -vx
+ VCSH_DEBUG=1
+ echo "debug mode on"
+ echo "$SELF $VERSION"
+ elif [ x"$1" = x'-v' ]; then
+ VCSH_VERBOSE=1
+ echo "verbose mode on"
+ echo "$SELF $VERSION"
+ elif [ x"$1" = x'-c' ]; then
+ VCSH_OPTION_CONFIG=$OPTARG
+ fi
+ shift 1
+done
+
+source_all() {
+ # Source file even if it's in $PWD and does not have any slashes in it
+ case $1 in
+ */*) . "$1";;
+ *) . "$PWD/$1";;
+ esac;
+}
+
+
+# Read configuration and set defaults if anything's not set
+[ -n "$VCSH_DEBUG" ] && set -vx
+: ${XDG_CONFIG_HOME:="$HOME/.config"}
+
+# Read configuration files if there are any
+[ -r "/etc/vcsh/config" ] && . "/etc/vcsh/config"
+[ -r "$XDG_CONFIG_HOME/vcsh/config" ] && . "$XDG_CONFIG_HOME/vcsh/config"
+if [ -n "$VCSH_OPTION_CONFIG" ]; then
+ # Source $VCSH_OPTION_CONFIG if it can be read and is in $PWD of $PATH
+ if [ -r "$VCSH_OPTION_CONFIG" ]; then
+ source_all "$VCSH_OPTION_CONFIG"
+ else
+ fatal "Can not read configuration file '$VCSH_OPTION_CONFIG'" 1
+ fi
+fi
+[ -n "$VCSH_DEBUG" ] && set -vx
+
+# Read defaults
+: ${VCSH_REPO_D:="$XDG_CONFIG_HOME/vcsh/repo.d"}
+: ${VCSH_HOOK_D:="$XDG_CONFIG_HOME/vcsh/hooks-enabled"}
+: ${VCSH_OVERLAY_D:="$XDG_CONFIG_HOME/vcsh/overlays-enabled"}
+: ${VCSH_BASE:="$HOME"}
+: ${VCSH_GITIGNORE:=exact}
+: ${VCSH_GITATTRIBUTES:=none}
+: ${VCSH_WORKTREE:=absolute}
+
+if [ ! "x$VCSH_GITIGNORE" = 'xexact' ] && [ ! "x$VCSH_GITIGNORE" = 'xnone' ] && [ ! "x$VCSH_GITIGNORE" = 'xrecursive' ]; then
+ fatal "'\$VCSH_GITIGNORE' must equal 'exact', 'none', or 'recursive'" 1
+fi
+
+if [ ! "x$VCSH_WORKTREE" = 'xabsolute' ] && [ ! "x$VCSH_WORKTREE" = 'xrelative' ]; then
+ fatal "'\$VCSH_WORKTREE' must equal 'absolute', or 'relative'" 1
+fi
+
+