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mirror of https://github.com/git/git.git synced 2024-10-22 00:38:12 +02:00

Merge branch 'js/mergetool-optim'

"git mergetool" and its tests now spawn fewer subprocesses.

* js/mergetool-optim:
  mergetool: use shell variable magic instead of `awk`
  mergetool: dissect strings with shell variable magic instead of `expr`
  t7610-mergetool: use test_cmp instead of test $(cat file) = $txt
  t7610-mergetool: do not place pipelines headed by `yes` in subshells
This commit is contained in:
Junio C Hamano 2019-07-09 15:25:35 -07:00
commit 2950cbd499
2 changed files with 206 additions and 144 deletions

@ -228,9 +228,8 @@ stage_submodule () {
}
checkout_staged_file () {
tmpfile=$(expr \
"$(git checkout-index --temp --stage="$1" "$2" 2>/dev/null)" \
: '\([^ ]*\) ')
tmpfile="$(git checkout-index --temp --stage="$1" "$2" 2>/dev/null)" &&
tmpfile=${tmpfile%%' '*}
if test $? -eq 0 && test -n "$tmpfile"
then
@ -255,13 +254,16 @@ merge_file () {
return 1
fi
if BASE=$(expr "$MERGED" : '\(.*\)\.[^/]*$')
then
ext=$(expr "$MERGED" : '.*\(\.[^/]*\)$')
else
# extract file extension from the last path component
case "${MERGED##*/}" in
*.*)
ext=.${MERGED##*.}
BASE=${MERGED%"$ext"}
;;
*)
BASE=$MERGED
ext=
fi
esac
mergetool_tmpdir_init
@ -277,15 +279,30 @@ merge_file () {
REMOTE="$MERGETOOL_TMPDIR/${BASE}_REMOTE_$$$ext"
BASE="$MERGETOOL_TMPDIR/${BASE}_BASE_$$$ext"
base_mode=$(git ls-files -u -- "$MERGED" | awk '{if ($3==1) print $1;}')
local_mode=$(git ls-files -u -- "$MERGED" | awk '{if ($3==2) print $1;}')
remote_mode=$(git ls-files -u -- "$MERGED" | awk '{if ($3==3) print $1;}')
base_mode= local_mode= remote_mode=
# here, $IFS is just a LF
for line in $f
do
mode=${line%% *} # 1st word
sha1=${line#"$mode "}
sha1=${sha1%% *} # 2nd word
case "${line#$mode $sha1 }" in # remainder
'1 '*)
base_mode=$mode
;;
'2 '*)
local_mode=$mode local_sha1=$sha1
;;
'3 '*)
remote_mode=$mode remote_sha1=$sha1
;;
esac
done
if is_submodule "$local_mode" || is_submodule "$remote_mode"
then
echo "Submodule merge conflict for '$MERGED':"
local_sha1=$(git ls-files -u -- "$MERGED" | awk '{if ($3==2) print $2;}')
remote_sha1=$(git ls-files -u -- "$MERGED" | awk '{if ($3==3) print $2;}')
describe_file "$local_mode" "local" "$local_sha1"
describe_file "$remote_mode" "remote" "$remote_sha1"
resolve_submodule_merge
@ -406,7 +423,7 @@ main () {
-t|--tool*)
case "$#,$1" in
*,*=*)
merge_tool=$(expr "z$1" : 'z-[^=]*=\(.*\)')
merge_tool=${1#*=}
;;
1,*)
usage ;;

@ -131,17 +131,21 @@ test_expect_success 'custom mergetool' '
git checkout -b test$test_count branch1 &&
git submodule update -N &&
test_must_fail git merge master &&
( yes "" | git mergetool both ) &&
( yes "" | git mergetool file1 file1 ) &&
( yes "" | git mergetool file2 "spaced name" ) &&
( yes "" | git mergetool subdir/file3 ) &&
( yes "d" | git mergetool file11 ) &&
( yes "d" | git mergetool file12 ) &&
( yes "l" | git mergetool submod ) &&
test "$(cat file1)" = "master updated" &&
test "$(cat file2)" = "master new" &&
test "$(cat subdir/file3)" = "master new sub" &&
test "$(cat submod/bar)" = "branch1 submodule" &&
yes "" | git mergetool both &&
yes "" | git mergetool file1 file1 &&
yes "" | git mergetool file2 "spaced name" &&
yes "" | git mergetool subdir/file3 &&
yes "d" | git mergetool file11 &&
yes "d" | git mergetool file12 &&
yes "l" | git mergetool submod &&
echo "master updated" >expect &&
test_cmp expect file1 &&
echo "master new" >expect &&
test_cmp expect file2 &&
echo "master new sub" >expect &&
test_cmp expect subdir/file3 &&
echo "branch1 submodule" >expect &&
test_cmp expect submod/bar &&
git commit -m "branch1 resolved with mergetool"
'
@ -153,17 +157,21 @@ test_expect_success 'gui mergetool' '
git checkout -b test$test_count branch1 &&
git submodule update -N &&
test_must_fail git merge master &&
( yes "" | git mergetool --gui both ) &&
( yes "" | git mergetool -g file1 file1 ) &&
( yes "" | git mergetool --gui file2 "spaced name" ) &&
( yes "" | git mergetool --gui subdir/file3 ) &&
( yes "d" | git mergetool --gui file11 ) &&
( yes "d" | git mergetool --gui file12 ) &&
( yes "l" | git mergetool --gui submod ) &&
test "$(cat file1)" = "gui master updated" &&
test "$(cat file2)" = "gui master new" &&
test "$(cat subdir/file3)" = "gui master new sub" &&
test "$(cat submod/bar)" = "branch1 submodule" &&
yes "" | git mergetool --gui both &&
yes "" | git mergetool -g file1 file1 &&
yes "" | git mergetool --gui file2 "spaced name" &&
yes "" | git mergetool --gui subdir/file3 &&
yes "d" | git mergetool --gui file11 &&
yes "d" | git mergetool --gui file12 &&
yes "l" | git mergetool --gui submod &&
echo "gui master updated" >expect &&
test_cmp expect file1 &&
echo "gui master new" >expect &&
test_cmp expect file2 &&
echo "gui master new sub" >expect &&
test_cmp expect subdir/file3 &&
echo "branch1 submodule" >expect &&
test_cmp expect submod/bar &&
git commit -m "branch1 resolved with mergetool"
'
@ -172,17 +180,21 @@ test_expect_success 'gui mergetool without merge.guitool set falls back to merge
git checkout -b test$test_count branch1 &&
git submodule update -N &&
test_must_fail git merge master &&
( yes "" | git mergetool --gui both ) &&
( yes "" | git mergetool -g file1 file1 ) &&
( yes "" | git mergetool --gui file2 "spaced name" ) &&
( yes "" | git mergetool --gui subdir/file3 ) &&
( yes "d" | git mergetool --gui file11 ) &&
( yes "d" | git mergetool --gui file12 ) &&
( yes "l" | git mergetool --gui submod ) &&
test "$(cat file1)" = "master updated" &&
test "$(cat file2)" = "master new" &&
test "$(cat subdir/file3)" = "master new sub" &&
test "$(cat submod/bar)" = "branch1 submodule" &&
yes "" | git mergetool --gui both &&
yes "" | git mergetool -g file1 file1 &&
yes "" | git mergetool --gui file2 "spaced name" &&
yes "" | git mergetool --gui subdir/file3 &&
yes "d" | git mergetool --gui file11 &&
yes "d" | git mergetool --gui file12 &&
yes "l" | git mergetool --gui submod &&
echo "master updated" >expect &&
test_cmp expect file1 &&
echo "master new" >expect &&
test_cmp expect file2 &&
echo "master new sub" >expect &&
test_cmp expect subdir/file3 &&
echo "branch1 submodule" >expect &&
test_cmp expect submod/bar &&
git commit -m "branch1 resolved with mergetool"
'
@ -195,19 +207,20 @@ test_expect_success 'mergetool crlf' '
test_config core.autocrlf true &&
git checkout -b test$test_count branch1 &&
test_must_fail git merge master &&
( yes "" | git mergetool file1 ) &&
( yes "" | git mergetool file2 ) &&
( yes "" | git mergetool "spaced name" ) &&
( yes "" | git mergetool both ) &&
( yes "" | git mergetool subdir/file3 ) &&
( yes "d" | git mergetool file11 ) &&
( yes "d" | git mergetool file12 ) &&
( yes "r" | git mergetool submod ) &&
yes "" | git mergetool file1 &&
yes "" | git mergetool file2 &&
yes "" | git mergetool "spaced name" &&
yes "" | git mergetool both &&
yes "" | git mergetool subdir/file3 &&
yes "d" | git mergetool file11 &&
yes "d" | git mergetool file12 &&
yes "r" | git mergetool submod &&
test "$(printf x | cat file1 -)" = "$(printf "master updated\r\nx")" &&
test "$(printf x | cat file2 -)" = "$(printf "master new\r\nx")" &&
test "$(printf x | cat subdir/file3 -)" = "$(printf "master new sub\r\nx")" &&
git submodule update -N &&
test "$(cat submod/bar)" = "master submodule" &&
echo "master submodule" >expect &&
test_cmp expect submod/bar &&
git commit -m "branch1 resolved with mergetool - autocrlf"
'
@ -218,8 +231,9 @@ test_expect_success 'mergetool in subdir' '
(
cd subdir &&
test_must_fail git merge master &&
( yes "" | git mergetool file3 ) &&
test "$(cat file3)" = "master new sub"
yes "" | git mergetool file3 &&
echo "master new sub" >expect &&
test_cmp expect file3
)
'
@ -230,16 +244,19 @@ test_expect_success 'mergetool on file in parent dir' '
(
cd subdir &&
test_must_fail git merge master &&
( yes "" | git mergetool file3 ) &&
( yes "" | git mergetool ../file1 ) &&
( yes "" | git mergetool ../file2 ../spaced\ name ) &&
( yes "" | git mergetool ../both ) &&
( yes "d" | git mergetool ../file11 ) &&
( yes "d" | git mergetool ../file12 ) &&
( yes "l" | git mergetool ../submod ) &&
test "$(cat ../file1)" = "master updated" &&
test "$(cat ../file2)" = "master new" &&
test "$(cat ../submod/bar)" = "branch1 submodule" &&
yes "" | git mergetool file3 &&
yes "" | git mergetool ../file1 &&
yes "" | git mergetool ../file2 ../spaced\ name &&
yes "" | git mergetool ../both &&
yes "d" | git mergetool ../file11 &&
yes "d" | git mergetool ../file12 &&
yes "l" | git mergetool ../submod &&
echo "master updated" >expect &&
test_cmp expect ../file1 &&
echo "master new" >expect &&
test_cmp expect ../file2 &&
echo "branch1 submodule" >expect &&
test_cmp expect ../submod/bar &&
git commit -m "branch1 resolved with mergetool - subdir"
)
'
@ -250,9 +267,9 @@ test_expect_success 'mergetool skips autoresolved' '
git submodule update -N &&
test_must_fail git merge master &&
test -n "$(git ls-files -u)" &&
( yes "d" | git mergetool file11 ) &&
( yes "d" | git mergetool file12 ) &&
( yes "l" | git mergetool submod ) &&
yes "d" | git mergetool file11 &&
yes "d" | git mergetool file12 &&
yes "l" | git mergetool submod &&
output="$(git mergetool --no-prompt)" &&
test "$output" = "No files need merging"
'
@ -264,13 +281,17 @@ test_expect_success 'mergetool merges all from subdir (rerere disabled)' '
(
cd subdir &&
test_must_fail git merge master &&
( yes "r" | git mergetool ../submod ) &&
( yes "d" "d" | git mergetool --no-prompt ) &&
test "$(cat ../file1)" = "master updated" &&
test "$(cat ../file2)" = "master new" &&
test "$(cat file3)" = "master new sub" &&
yes "r" | git mergetool ../submod &&
yes "d" "d" | git mergetool --no-prompt &&
echo "master updated" >expect &&
test_cmp expect ../file1 &&
echo "master new" >expect &&
test_cmp expect ../file2 &&
echo "master new sub" >expect &&
test_cmp expect file3 &&
( cd .. && git submodule update -N ) &&
test "$(cat ../submod/bar)" = "master submodule" &&
echo "master submodule" >expect &&
test_cmp expect ../submod/bar &&
git commit -m "branch2 resolved by mergetool from subdir"
)
'
@ -283,13 +304,17 @@ test_expect_success 'mergetool merges all from subdir (rerere enabled)' '
(
cd subdir &&
test_must_fail git merge master &&
( yes "r" | git mergetool ../submod ) &&
( yes "d" "d" | git mergetool --no-prompt ) &&
test "$(cat ../file1)" = "master updated" &&
test "$(cat ../file2)" = "master new" &&
test "$(cat file3)" = "master new sub" &&
yes "r" | git mergetool ../submod &&
yes "d" "d" | git mergetool --no-prompt &&
echo "master updated" >expect &&
test_cmp expect ../file1 &&
echo "master new" >expect &&
test_cmp expect ../file2 &&
echo "master new sub" >expect &&
test_cmp expect file3 &&
( cd .. && git submodule update -N ) &&
test "$(cat ../submod/bar)" = "master submodule" &&
echo "master submodule" >expect &&
test_cmp expect ../submod/bar &&
git commit -m "branch2 resolved by mergetool from subdir"
)
'
@ -301,8 +326,8 @@ test_expect_success 'mergetool skips resolved paths when rerere is active' '
git checkout -b test$test_count branch1 &&
git submodule update -N &&
test_must_fail git merge master &&
( yes "l" | git mergetool --no-prompt submod ) &&
( yes "d" "d" | git mergetool --no-prompt ) &&
yes "l" | git mergetool --no-prompt submod &&
yes "d" "d" | git mergetool --no-prompt &&
git submodule update -N &&
output="$(yes "n" | git mergetool --no-prompt)" &&
test "$output" = "No files need merging"
@ -343,9 +368,10 @@ test_expect_success 'mergetool takes partial path' '
git submodule update -N &&
test_must_fail git merge master &&
( yes "" | git mergetool subdir ) &&
yes "" | git mergetool subdir &&
test "$(cat subdir/file3)" = "master new sub"
echo "master new sub" >expect &&
test_cmp expect subdir/file3
'
test_expect_success 'mergetool delete/delete conflict' '
@ -410,14 +436,16 @@ test_expect_success 'deleted vs modified submodule' '
git checkout -b test$test_count.a test$test_count &&
test_must_fail git merge master &&
test -n "$(git ls-files -u)" &&
( yes "" | git mergetool file1 file2 spaced\ name subdir/file3 ) &&
( yes "" | git mergetool both ) &&
( yes "d" | git mergetool file11 file12 ) &&
( yes "r" | git mergetool submod ) &&
yes "" | git mergetool file1 file2 spaced\ name subdir/file3 &&
yes "" | git mergetool both &&
yes "d" | git mergetool file11 file12 &&
yes "r" | git mergetool submod &&
rmdir submod && mv submod-movedaside submod &&
test "$(cat submod/bar)" = "branch1 submodule" &&
echo "branch1 submodule" >expect &&
test_cmp expect submod/bar &&
git submodule update -N &&
test "$(cat submod/bar)" = "master submodule" &&
echo "master submodule" >expect &&
test_cmp expect submod/bar &&
output="$(git mergetool --no-prompt)" &&
test "$output" = "No files need merging" &&
git commit -m "Merge resolved by keeping module" &&
@ -427,10 +455,10 @@ test_expect_success 'deleted vs modified submodule' '
git submodule update -N &&
test_must_fail git merge master &&
test -n "$(git ls-files -u)" &&
( yes "" | git mergetool file1 file2 spaced\ name subdir/file3 ) &&
( yes "" | git mergetool both ) &&
( yes "d" | git mergetool file11 file12 ) &&
( yes "l" | git mergetool submod ) &&
yes "" | git mergetool file1 file2 spaced\ name subdir/file3 &&
yes "" | git mergetool both &&
yes "d" | git mergetool file11 file12 &&
yes "l" | git mergetool submod &&
test ! -e submod &&
output="$(git mergetool --no-prompt)" &&
test "$output" = "No files need merging" &&
@ -441,10 +469,10 @@ test_expect_success 'deleted vs modified submodule' '
git submodule update -N &&
test_must_fail git merge test$test_count &&
test -n "$(git ls-files -u)" &&
( yes "" | git mergetool file1 file2 spaced\ name subdir/file3 ) &&
( yes "" | git mergetool both ) &&
( yes "d" | git mergetool file11 file12 ) &&
( yes "r" | git mergetool submod ) &&
yes "" | git mergetool file1 file2 spaced\ name subdir/file3 &&
yes "" | git mergetool both &&
yes "d" | git mergetool file11 file12 &&
yes "r" | git mergetool submod &&
test ! -e submod &&
test -d submod.orig &&
git submodule update -N &&
@ -457,13 +485,15 @@ test_expect_success 'deleted vs modified submodule' '
git submodule update -N &&
test_must_fail git merge test$test_count &&
test -n "$(git ls-files -u)" &&
( yes "" | git mergetool file1 file2 spaced\ name subdir/file3 ) &&
( yes "" | git mergetool both ) &&
( yes "d" | git mergetool file11 file12 ) &&
( yes "l" | git mergetool submod ) &&
test "$(cat submod/bar)" = "master submodule" &&
yes "" | git mergetool file1 file2 spaced\ name subdir/file3 &&
yes "" | git mergetool both &&
yes "d" | git mergetool file11 file12 &&
yes "l" | git mergetool submod &&
echo "master submodule" >expect &&
test_cmp expect submod/bar &&
git submodule update -N &&
test "$(cat submod/bar)" = "master submodule" &&
echo "master submodule" >expect &&
test_cmp expect submod/bar &&
output="$(git mergetool --no-prompt)" &&
test "$output" = "No files need merging" &&
git commit -m "Merge resolved by keeping module"
@ -481,14 +511,16 @@ test_expect_success 'file vs modified submodule' '
git checkout -b test$test_count.a branch1 &&
test_must_fail git merge master &&
test -n "$(git ls-files -u)" &&
( yes "" | git mergetool file1 file2 spaced\ name subdir/file3 ) &&
( yes "" | git mergetool both ) &&
( yes "d" | git mergetool file11 file12 ) &&
( yes "r" | git mergetool submod ) &&
yes "" | git mergetool file1 file2 spaced\ name subdir/file3 &&
yes "" | git mergetool both &&
yes "d" | git mergetool file11 file12 &&
yes "r" | git mergetool submod &&
rmdir submod && mv submod-movedaside submod &&
test "$(cat submod/bar)" = "branch1 submodule" &&
echo "branch1 submodule" >expect &&
test_cmp expect submod/bar &&
git submodule update -N &&
test "$(cat submod/bar)" = "master submodule" &&
echo "master submodule" >expect &&
test_cmp expect submod/bar &&
output="$(git mergetool --no-prompt)" &&
test "$output" = "No files need merging" &&
git commit -m "Merge resolved by keeping module" &&
@ -497,12 +529,13 @@ test_expect_success 'file vs modified submodule' '
git checkout -b test$test_count.b test$test_count &&
test_must_fail git merge master &&
test -n "$(git ls-files -u)" &&
( yes "" | git mergetool file1 file2 spaced\ name subdir/file3 ) &&
( yes "" | git mergetool both ) &&
( yes "d" | git mergetool file11 file12 ) &&
( yes "l" | git mergetool submod ) &&
yes "" | git mergetool file1 file2 spaced\ name subdir/file3 &&
yes "" | git mergetool both &&
yes "d" | git mergetool file11 file12 &&
yes "l" | git mergetool submod &&
git submodule update -N &&
test "$(cat submod)" = "not a submodule" &&
echo "not a submodule" >expect &&
test_cmp expect submod &&
output="$(git mergetool --no-prompt)" &&
test "$output" = "No files need merging" &&
git commit -m "Merge resolved by keeping file" &&
@ -513,13 +546,14 @@ test_expect_success 'file vs modified submodule' '
git submodule update -N &&
test_must_fail git merge test$test_count &&
test -n "$(git ls-files -u)" &&
( yes "" | git mergetool file1 file2 spaced\ name subdir/file3 ) &&
( yes "" | git mergetool both ) &&
( yes "d" | git mergetool file11 file12 ) &&
( yes "r" | git mergetool submod ) &&
yes "" | git mergetool file1 file2 spaced\ name subdir/file3 &&
yes "" | git mergetool both &&
yes "d" | git mergetool file11 file12 &&
yes "r" | git mergetool submod &&
test -d submod.orig &&
git submodule update -N &&
test "$(cat submod)" = "not a submodule" &&
echo "not a submodule" >expect &&
test_cmp expect submod &&
output="$(git mergetool --no-prompt)" &&
test "$output" = "No files need merging" &&
git commit -m "Merge resolved by keeping file" &&
@ -529,13 +563,15 @@ test_expect_success 'file vs modified submodule' '
git submodule update -N &&
test_must_fail git merge test$test_count &&
test -n "$(git ls-files -u)" &&
( yes "" | git mergetool file1 file2 spaced\ name subdir/file3 ) &&
( yes "" | git mergetool both ) &&
( yes "d" | git mergetool file11 file12 ) &&
( yes "l" | git mergetool submod ) &&
test "$(cat submod/bar)" = "master submodule" &&
yes "" | git mergetool file1 file2 spaced\ name subdir/file3 &&
yes "" | git mergetool both &&
yes "d" | git mergetool file11 file12 &&
yes "l" | git mergetool submod &&
echo "master submodule" >expect &&
test_cmp expect submod/bar &&
git submodule update -N &&
test "$(cat submod/bar)" = "master submodule" &&
echo "master submodule" >expect &&
test_cmp expect submod/bar &&
output="$(git mergetool --no-prompt)" &&
test "$output" = "No files need merging" &&
git commit -m "Merge resolved by keeping module"
@ -587,19 +623,23 @@ test_expect_success 'submodule in subdirectory' '
test_must_fail git merge test$test_count.a &&
(
cd subdir &&
( yes "l" | git mergetool subdir_module )
yes "l" | git mergetool subdir_module
) &&
test "$(cat subdir/subdir_module/file15)" = "test$test_count.b" &&
echo "test$test_count.b" >expect &&
test_cmp expect subdir/subdir_module/file15 &&
git submodule update -N &&
test "$(cat subdir/subdir_module/file15)" = "test$test_count.b" &&
echo "test$test_count.b" >expect &&
test_cmp expect subdir/subdir_module/file15 &&
git reset --hard &&
git submodule update -N &&
test_must_fail git merge test$test_count.a &&
( yes "r" | git mergetool subdir/subdir_module ) &&
test "$(cat subdir/subdir_module/file15)" = "test$test_count.b" &&
yes "r" | git mergetool subdir/subdir_module &&
echo "test$test_count.b" >expect &&
test_cmp expect subdir/subdir_module/file15 &&
git submodule update -N &&
test "$(cat subdir/subdir_module/file15)" = "test$test_count.a" &&
echo "test$test_count.a" >expect &&
test_cmp expect subdir/subdir_module/file15 &&
git commit -m "branch1 resolved with mergetool"
'
@ -615,22 +655,25 @@ test_expect_success 'directory vs modified submodule' '
test_must_fail git merge master &&
test -n "$(git ls-files -u)" &&
( yes "l" | git mergetool submod ) &&
test "$(cat submod/file16)" = "not a submodule" &&
yes "l" | git mergetool submod &&
echo "not a submodule" >expect &&
test_cmp expect submod/file16 &&
rm -rf submod.orig &&
git reset --hard &&
test_must_fail git merge master &&
test -n "$(git ls-files -u)" &&
test ! -e submod.orig &&
( yes "r" | git mergetool submod ) &&
yes "r" | git mergetool submod &&
test -d submod.orig &&
test "$(cat submod.orig/file16)" = "not a submodule" &&
echo "not a submodule" >expect &&
test_cmp expect submod.orig/file16 &&
rm -r submod.orig &&
mv submod-movedaside/.git submod &&
( cd submod && git clean -f && git reset --hard ) &&
git submodule update -N &&
test "$(cat submod/bar)" = "master submodule" &&
echo "master submodule" >expect &&
test_cmp expect submod/bar &&
git reset --hard &&
rm -rf submod-movedaside &&
@ -638,17 +681,19 @@ test_expect_success 'directory vs modified submodule' '
git submodule update -N &&
test_must_fail git merge test$test_count &&
test -n "$(git ls-files -u)" &&
( yes "l" | git mergetool submod ) &&
yes "l" | git mergetool submod &&
git submodule update -N &&
test "$(cat submod/bar)" = "master submodule" &&
echo "master submodule" >expect &&
test_cmp expect submod/bar &&
git reset --hard &&
git submodule update -N &&
test_must_fail git merge test$test_count &&
test -n "$(git ls-files -u)" &&
test ! -e submod.orig &&
( yes "r" | git mergetool submod ) &&
test "$(cat submod/file16)" = "not a submodule" &&
yes "r" | git mergetool submod &&
echo "not a submodule" >expect &&
test_cmp expect submod/file16 &&
git reset --hard master &&
( cd submod && git clean -f && git reset --hard ) &&