merge-one-file: leave unmerged index entries upon automerge failure.

When automerge fails, we used to collapse the path to stage0
from "our" branch, to help "diff-files" users to view the
half-merged state against the current HEAD.  Now diff-files has
been taught how to compare with unmerged stage2,leaving them
unmerged is a better thing to do, especially this prevents the
unresolved conflicts to be committed by mistake.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/git-merge-one-file.sh b/git-merge-one-file.sh
index c3eca8b..739a072 100755 (executable)
--- a/git-merge-one-file.sh
+++ b/git-merge-one-file.sh
@@ -79,11 +79,7 @@ case "${1:-.}${2:-.}${3:-.}" in
                ;;
        esac
 
-       # We reset the index to the first branch, making
-       # git-diff-file useful
-       git-update-index --add --cacheinfo "$6" "$2" "$4"
-               git-checkout-index -u -f -- "$4" &&
-               merge "$4" "$orig" "$src2"
+       merge "$4" "$orig" "$src2"
        ret=$?
        rm -f -- "$orig" "$src2"