# Copyright (c) 2005 Linus Torvalds
# Copyright (c) 2005 Junio C Hamano
+USAGE='[ --diff-options ] <ent>{0,2} [<path>...]'
+SUBDIRECTORY_OK='Yes'
+. git-sh-setup
+
rev=$(git-rev-parse --revs-only --no-flags --sq "$@") || exit
flags=$(git-rev-parse --no-revs --flags --sq "$@")
files=$(git-rev-parse --no-revs --no-flags --sq "$@")
-die () {
- echo >&2 "$*"
- exit 1
-}
-
# I often say 'git diff --cached -p' and get scolded by git-diff-files, but
# obviously I mean 'git diff --cached -p HEAD' in that case.
case "$rev" in
esac
esac
-# If we do not have --name-status, --name-only nor -r, default to -p.
-# If we do not have -B nor -C, default to -M.
+# If we have -[123] --ours --theirs --base, don't do --cc by default.
case " $flags " in
-*" '--name-status' "* | *" '--name-only' "* | *" '-r' "* )
+*" '-"[123]"' "* | *" '--ours' "* | *" '--base' "* | *" '--theirs' "*)
+ cc_or_p=-p ;;
+*)
+ cc_or_p=--cc ;;
+esac
+
+# If we do not have --name-status, --name-only, -r, or -c default to --cc.
+case " $flags " in
+*" '--name-status' "* | *" '--name-only' "* | *" '-r' "* | *" '-c' "* )
;;
*)
- flags="$flags'-p' " ;;
+ flags="$flags'$cc_or_p' " ;;
esac
+
+# If we do not have -B, -C, -r, nor -p, default to -M.
case " $flags " in
-*" '-"[BCM]* | *" '--find-copies-harder' "*)
+*" '-"[BCMrp]* | *" '--find-copies-harder' "*)
;; # something like -M50.
*)
flags="$flags'-M' " ;;
case "$rev" in
?*' '?*' '?*)
- echo >&2 "I don't understand"
- exit 1
+ usage
;;
?*' '^?*)
begin=$(expr "$rev" : '.*^.\([0-9a-f]*\).*') &&
cmd="git-diff-files $flags -- $files"
;;
*)
- die "I don't understand $*"
+ usage
;;
esac