: ${flags:="'-M' '-p'"}
+# I often say 'git diff --cached -p' and get scolded by git-diff-files, but
+# obviously I mean 'git diff --cached -p HEAD' in that case.
+case "$rev" in
+'')
+ case " $flags " in
+ *" '--cached' "*)
+ rev='HEAD '
+ ;;
+ esac
+esac
+
case "$rev" in
?*' '?*' '?*)
- die "I don't understand"
+ echo >&2 "I don't understand"
+ exit 1
;;
?*' '^?*)
begin=$(expr "$rev" : '.*^.\([0-9a-f]*\).*') &&