The preferred style in tests seems to be

test_expect_success 'short description, ended by 2 single quotes' '
        here comes the test &&
        and chains over many lines &&
        ended by a quote
'

Or going by the numbers:
    $ git -C t/ grep "' '$" | wc -l
    9796
    $ git -C t/ grep test_expect_ |wc -l
    11861

Signed-off-by: Stefan Beller <sbel...@google.com>
---
 t/t1001-read-tree-m-2way.sh | 641 ++++++++++++++++++++++----------------------
 1 file changed, 320 insertions(+), 321 deletions(-)

diff --git a/t/t1001-read-tree-m-2way.sh b/t/t1001-read-tree-m-2way.sh
index db1b6f5cf4..7b70089705 100755
--- a/t/t1001-read-tree-m-2way.sh
+++ b/t/t1001-read-tree-m-2way.sh
@@ -14,10 +14,10 @@ all the combinations described in the two-tree merge "carry 
forward"
 rules, found in <Documentation/git read-tree.txt>.
 
 In the test, these paths are used:
-        bozbar  - in H, stays in M, modified from bozbar to gnusto
-        frotz   - not in H added in M
-        nitfol  - in H, stays in M unmodified
-        rezrov  - in H, deleted in M
+       bozbar  - in H, stays in M, modified from bozbar to gnusto
+       frotz   - not in H added in M
+       nitfol  - in H, stays in M unmodified
+       rezrov  - in H, deleted in M
        yomin   - not in H or M
 '
 . ./test-lib.sh
@@ -60,336 +60,335 @@ EOF
 
 sed -e 's/bozbar/gnusto (earlier bozbar)/' bozbar-old >bozbar-new
 
-test_expect_success \
-    setup \
-    'echo frotz >frotz &&
-     echo nitfol >nitfol &&
-     cat bozbar-old >bozbar &&
-     echo rezrov >rezrov &&
-     echo yomin >yomin &&
-     git update-index --add nitfol bozbar rezrov &&
-     treeH=$(git write-tree) &&
-     echo treeH $treeH &&
-     git ls-tree $treeH &&
-
-     cat bozbar-new >bozbar &&
-     git update-index --add frotz bozbar --force-remove rezrov &&
-     git ls-files --stage >M.out &&
-     treeM=$(git write-tree) &&
-     echo treeM $treeM &&
-     git ls-tree $treeM &&
-     git diff-tree $treeH $treeM'
-
-test_expect_success \
-    '1, 2, 3 - no carry forward' \
-    'rm -f .git/index &&
-     read_tree_twoway $treeH $treeM &&
-     git ls-files --stage >1-3.out &&
-     test_cmp M.out 1-3.out &&
-     check_cache_at bozbar dirty &&
-     check_cache_at frotz dirty &&
-     check_cache_at nitfol dirty'
+test_expect_success 'setup' '
+       echo frotz >frotz &&
+       echo nitfol >nitfol &&
+       cat bozbar-old >bozbar &&
+       echo rezrov >rezrov &&
+       echo yomin >yomin &&
+       git update-index --add nitfol bozbar rezrov &&
+       treeH=$(git write-tree) &&
+       echo treeH $treeH &&
+       git ls-tree $treeH &&
+
+       cat bozbar-new >bozbar &&
+       git update-index --add frotz bozbar --force-remove rezrov &&
+       git ls-files --stage >M.out &&
+       treeM=$(git write-tree) &&
+       echo treeM $treeM &&
+       git ls-tree $treeM &&
+       git diff-tree $treeH $treeM
+'
 
+test_expect_success '1, 2, 3 - no carry forward' '
+       rm -f .git/index &&
+       read_tree_twoway $treeH $treeM &&
+       git ls-files --stage >1-3.out &&
+       test_cmp M.out 1-3.out &&
+       check_cache_at bozbar dirty &&
+       check_cache_at frotz dirty &&
+       check_cache_at nitfol dirty
+'
 echo '+100644 X 0      yomin' >expected
 
-test_expect_success \
-    '4 - carry forward local addition.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     git update-index --add yomin &&
-     read_tree_twoway $treeH $treeM &&
-     git ls-files --stage >4.out &&
-     test_must_fail git diff --no-index M.out 4.out >4diff.out &&
-     compare_change 4diff.out expected &&
-     check_cache_at yomin clean'
-
-test_expect_success \
-    '5 - carry forward local addition.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     echo yomin >yomin &&
-     git update-index --add yomin &&
-     echo yomin yomin >yomin &&
-     read_tree_twoway $treeH $treeM &&
-     git ls-files --stage >5.out &&
-     test_must_fail git diff --no-index M.out 5.out >5diff.out &&
-     compare_change 5diff.out expected &&
-     check_cache_at yomin dirty'
-
-test_expect_success \
-    '6 - local addition already has the same.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     git update-index --add frotz &&
-     read_tree_twoway $treeH $treeM &&
-     git ls-files --stage >6.out &&
-     test_cmp M.out 6.out &&
-     check_cache_at frotz clean'
-
-test_expect_success \
-    '7 - local addition already has the same.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     echo frotz >frotz &&
-     git update-index --add frotz &&
-     echo frotz frotz >frotz &&
-     read_tree_twoway $treeH $treeM &&
-     git ls-files --stage >7.out &&
-     test_cmp M.out 7.out &&
-     check_cache_at frotz dirty'
-
-test_expect_success \
-    '8 - conflicting addition.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     echo frotz frotz >frotz &&
-     git update-index --add frotz &&
-     if read_tree_twoway $treeH $treeM; then false; else :; fi'
-
-test_expect_success \
-    '9 - conflicting addition.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     echo frotz frotz >frotz &&
-     git update-index --add frotz &&
-     echo frotz >frotz &&
-     if read_tree_twoway $treeH $treeM; then false; else :; fi'
-
-test_expect_success \
-    '10 - path removed.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     echo rezrov >rezrov &&
-     git update-index --add rezrov &&
-     read_tree_twoway $treeH $treeM &&
-     git ls-files --stage >10.out &&
-     test_cmp M.out 10.out'
-
-test_expect_success \
-    '11 - dirty path removed.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     echo rezrov >rezrov &&
-     git update-index --add rezrov &&
-     echo rezrov rezrov >rezrov &&
-     if read_tree_twoway $treeH $treeM; then false; else :; fi'
-
-test_expect_success \
-    '12 - unmatching local changes being removed.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     echo rezrov rezrov >rezrov &&
-     git update-index --add rezrov &&
-     if read_tree_twoway $treeH $treeM; then false; else :; fi'
-
-test_expect_success \
-    '13 - unmatching local changes being removed.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     echo rezrov rezrov >rezrov &&
-     git update-index --add rezrov &&
-     echo rezrov >rezrov &&
-     if read_tree_twoway $treeH $treeM; then false; else :; fi'
+test_expect_success '4 - carry forward local addition.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       git update-index --add yomin &&
+       read_tree_twoway $treeH $treeM &&
+       git ls-files --stage >4.out &&
+       test_must_fail git diff --no-index M.out 4.out >4diff.out &&
+       compare_change 4diff.out expected &&
+       check_cache_at yomin clean
+'
+
+test_expect_success '5 - carry forward local addition.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       echo yomin >yomin &&
+       git update-index --add yomin &&
+       echo yomin yomin >yomin &&
+       read_tree_twoway $treeH $treeM &&
+       git ls-files --stage >5.out &&
+       test_must_fail git diff --no-index M.out 5.out >5diff.out &&
+       compare_change 5diff.out expected &&
+       check_cache_at yomin dirty
+'
+
+test_expect_success '6 - local addition already has the same.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       git update-index --add frotz &&
+       read_tree_twoway $treeH $treeM &&
+       git ls-files --stage >6.out &&
+       test_cmp M.out 6.out &&
+       check_cache_at frotz clean
+'
+
+test_expect_success '7 - local addition already has the same.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       echo frotz >frotz &&
+       git update-index --add frotz &&
+       echo frotz frotz >frotz &&
+       read_tree_twoway $treeH $treeM &&
+       git ls-files --stage >7.out &&
+       test_cmp M.out 7.out &&
+       check_cache_at frotz dirty
+'
+
+test_expect_success '8 - conflicting addition.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       echo frotz frotz >frotz &&
+       git update-index --add frotz &&
+       if read_tree_twoway $treeH $treeM; then false; else :; fi
+'
+
+test_expect_success '9 - conflicting addition.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       echo frotz frotz >frotz &&
+       git update-index --add frotz &&
+       echo frotz >frotz &&
+       if read_tree_twoway $treeH $treeM; then false; else :; fi
+'
+
+test_expect_success '10 - path removed.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       echo rezrov >rezrov &&
+       git update-index --add rezrov &&
+       read_tree_twoway $treeH $treeM &&
+       git ls-files --stage >10.out &&
+       test_cmp M.out 10.out
+'
+
+test_expect_success '11 - dirty path removed.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       echo rezrov >rezrov &&
+       git update-index --add rezrov &&
+       echo rezrov rezrov >rezrov &&
+       if read_tree_twoway $treeH $treeM; then false; else :; fi
+'
+
+test_expect_success '12 - unmatching local changes being removed.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       echo rezrov rezrov >rezrov &&
+       git update-index --add rezrov &&
+       if read_tree_twoway $treeH $treeM; then false; else :; fi
+'
+
+test_expect_success '13 - unmatching local changes being removed.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       echo rezrov rezrov >rezrov &&
+       git update-index --add rezrov &&
+       echo rezrov >rezrov &&
+       if read_tree_twoway $treeH $treeM; then false; else :; fi
+'
 
 cat >expected <<EOF
 -100644 X 0    nitfol
 +100644 X 0    nitfol
 EOF
 
-test_expect_success \
-    '14 - unchanged in two heads.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     echo nitfol nitfol >nitfol &&
-     git update-index --add nitfol &&
-     read_tree_twoway $treeH $treeM &&
-     git ls-files --stage >14.out &&
-     test_must_fail git diff --no-index M.out 14.out >14diff.out &&
-     compare_change 14diff.out expected &&
-     check_cache_at nitfol clean'
-
-test_expect_success \
-    '15 - unchanged in two heads.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     echo nitfol nitfol >nitfol &&
-     git update-index --add nitfol &&
-     echo nitfol nitfol nitfol >nitfol &&
-     read_tree_twoway $treeH $treeM &&
-     git ls-files --stage >15.out &&
-     test_must_fail git diff --no-index M.out 15.out >15diff.out &&
-     compare_change 15diff.out expected &&
-     check_cache_at nitfol dirty'
-
-test_expect_success \
-    '16 - conflicting local change.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     echo bozbar bozbar >bozbar &&
-     git update-index --add bozbar &&
-     if read_tree_twoway $treeH $treeM; then false; else :; fi'
-
-test_expect_success \
-    '17 - conflicting local change.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     echo bozbar bozbar >bozbar &&
-     git update-index --add bozbar &&
-     echo bozbar bozbar bozbar >bozbar &&
-     if read_tree_twoway $treeH $treeM; then false; else :; fi'
-
-test_expect_success \
-    '18 - local change already having a good result.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     cat bozbar-new >bozbar &&
-     git update-index --add bozbar &&
-     read_tree_twoway $treeH $treeM &&
-     git ls-files --stage >18.out &&
-     test_cmp M.out 18.out &&
-     check_cache_at bozbar clean'
-
-test_expect_success \
-    '19 - local change already having a good result, further modified.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     cat bozbar-new >bozbar &&
-     git update-index --add bozbar &&
-     echo gnusto gnusto >bozbar &&
-     read_tree_twoway $treeH $treeM &&
-     git ls-files --stage >19.out &&
-     test_cmp M.out 19.out &&
-     check_cache_at bozbar dirty'
-
-test_expect_success \
-    '20 - no local change, use new tree.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     cat bozbar-old >bozbar &&
-     git update-index --add bozbar &&
-     read_tree_twoway $treeH $treeM &&
-     git ls-files --stage >20.out &&
-     test_cmp M.out 20.out &&
-     check_cache_at bozbar dirty'
-
-test_expect_success \
-    '21 - no local change, dirty cache.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     cat bozbar-old >bozbar &&
-     git update-index --add bozbar &&
-     echo gnusto gnusto >bozbar &&
-     if read_tree_twoway $treeH $treeM; then false; else :; fi'
+test_expect_success '14 - unchanged in two heads.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       echo nitfol nitfol >nitfol &&
+       git update-index --add nitfol &&
+       read_tree_twoway $treeH $treeM &&
+       git ls-files --stage >14.out &&
+       test_must_fail git diff --no-index M.out 14.out >14diff.out &&
+       compare_change 14diff.out expected &&
+       check_cache_at nitfol clean
+'
+
+test_expect_success '15 - unchanged in two heads.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       echo nitfol nitfol >nitfol &&
+       git update-index --add nitfol &&
+       echo nitfol nitfol nitfol >nitfol &&
+       read_tree_twoway $treeH $treeM &&
+       git ls-files --stage >15.out &&
+       test_must_fail git diff --no-index M.out 15.out >15diff.out &&
+       compare_change 15diff.out expected &&
+       check_cache_at nitfol dirty
+'
+
+test_expect_success '16 - conflicting local change.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       echo bozbar bozbar >bozbar &&
+       git update-index --add bozbar &&
+       if read_tree_twoway $treeH $treeM; then false; else :; fi
+'
+
+test_expect_success '17 - conflicting local change.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       echo bozbar bozbar >bozbar &&
+       git update-index --add bozbar &&
+       echo bozbar bozbar bozbar >bozbar &&
+       if read_tree_twoway $treeH $treeM; then false; else :; fi
+'
+
+test_expect_success '18 - local change already having a good result.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       cat bozbar-new >bozbar &&
+       git update-index --add bozbar &&
+       read_tree_twoway $treeH $treeM &&
+       git ls-files --stage >18.out &&
+       test_cmp M.out 18.out &&
+       check_cache_at bozbar clean
+'
+
+test_expect_success '19 - local change already having a good result, further 
modified.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       cat bozbar-new >bozbar &&
+       git update-index --add bozbar &&
+       echo gnusto gnusto >bozbar &&
+       read_tree_twoway $treeH $treeM &&
+       git ls-files --stage >19.out &&
+       test_cmp M.out 19.out &&
+       check_cache_at bozbar dirty
+'
+
+test_expect_success '20 - no local change, use new tree.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       cat bozbar-old >bozbar &&
+       git update-index --add bozbar &&
+       read_tree_twoway $treeH $treeM &&
+       git ls-files --stage >20.out &&
+       test_cmp M.out 20.out &&
+       check_cache_at bozbar dirty
+'
+
+test_expect_success '21 - no local change, dirty cache.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       cat bozbar-old >bozbar &&
+       git update-index --add bozbar &&
+       echo gnusto gnusto >bozbar &&
+       if read_tree_twoway $treeH $treeM; then false; else :; fi
+'
 
 # This fails with straight two-way fast-forward.
-test_expect_success \
-    '22 - local change cache updated.' \
-    'rm -f .git/index &&
-     read_tree_must_succeed $treeH &&
-     git checkout-index -u -f -q -a &&
-     sed -e "s/such as/SUCH AS/" bozbar-old >bozbar &&
-     git update-index --add bozbar &&
-     if read_tree_twoway $treeH $treeM; then false; else :; fi'
+test_expect_success '22 - local change cache updated.' '
+       rm -f .git/index &&
+       read_tree_must_succeed $treeH &&
+       git checkout-index -u -f -q -a &&
+       sed -e "s/such as/SUCH AS/" bozbar-old >bozbar &&
+       git update-index --add bozbar &&
+       if read_tree_twoway $treeH $treeM; then false; else :; fi
+'
 
 # Also make sure we did not break DF vs DF/DF case.
-test_expect_success \
-    'DF vs DF/DF case setup.' \
-    'rm -f .git/index &&
-     echo DF >DF &&
-     git update-index --add DF &&
-     treeDF=$(git write-tree) &&
-     echo treeDF $treeDF &&
-     git ls-tree $treeDF &&
-
-     rm -f DF &&
-     mkdir DF &&
-     echo DF/DF >DF/DF &&
-     git update-index --add --remove DF DF/DF &&
-     treeDFDF=$(git write-tree) &&
-     echo treeDFDF $treeDFDF &&
-     git ls-tree $treeDFDF &&
-     git ls-files --stage >DFDF.out'
-
-test_expect_success \
-    'DF vs DF/DF case test.' \
-    'rm -f .git/index &&
-     rm -fr DF &&
-     echo DF >DF &&
-     git update-index --add DF &&
-     read_tree_twoway $treeDF $treeDFDF &&
-     git ls-files --stage >DFDFcheck.out &&
-     test_cmp DFDF.out DFDFcheck.out &&
-     check_cache_at DF/DF dirty &&
-     :'
-
-test_expect_success \
-    'a/b (untracked) vs a case setup.' \
-    'rm -f .git/index &&
-     : >a &&
-     git update-index --add a &&
-     treeM=$(git write-tree) &&
-     echo treeM $treeM &&
-     git ls-tree $treeM &&
-     git ls-files --stage >treeM.out &&
-
-     rm -f a &&
-     git update-index --remove a &&
-     mkdir a &&
-     : >a/b &&
-     treeH=$(git write-tree) &&
-     echo treeH $treeH &&
-     git ls-tree $treeH'
-
-test_expect_success \
-    'a/b (untracked) vs a, plus c/d case test.' \
-    'read_tree_u_must_fail -u -m "$treeH" "$treeM" &&
-     git ls-files --stage &&
-     test -f a/b'
-
-test_expect_success \
-    'a/b vs a, plus c/d case setup.' \
-    'rm -f .git/index &&
-     rm -fr a &&
-     : >a &&
-     mkdir c &&
-     : >c/d &&
-     git update-index --add a c/d &&
-     treeM=$(git write-tree) &&
-     echo treeM $treeM &&
-     git ls-tree $treeM &&
-     git ls-files --stage >treeM.out &&
-
-     rm -f a &&
-     mkdir a &&
-     : >a/b &&
-     git update-index --add --remove a a/b &&
-     treeH=$(git write-tree) &&
-     echo treeH $treeH &&
-     git ls-tree $treeH'
-
-test_expect_success \
-    'a/b vs a, plus c/d case test.' \
-    'read_tree_u_must_succeed -u -m "$treeH" "$treeM" &&
-     git ls-files --stage | tee >treeMcheck.out &&
-     test_cmp treeM.out treeMcheck.out'
+test_expect_success 'DF vs DF/DF case setup.' '
+       rm -f .git/index &&
+       echo DF >DF &&
+       git update-index --add DF &&
+       treeDF=$(git write-tree) &&
+       echo treeDF $treeDF &&
+       git ls-tree $treeDF &&
+
+       rm -f DF &&
+       mkdir DF &&
+       echo DF/DF >DF/DF &&
+       git update-index --add --remove DF DF/DF &&
+       treeDFDF=$(git write-tree) &&
+       echo treeDFDF $treeDFDF &&
+       git ls-tree $treeDFDF &&
+       git ls-files --stage >DFDF.out
+'
+
+test_expect_success 'DF vs DF/DF case test.' '
+       rm -f .git/index &&
+       rm -fr DF &&
+       echo DF >DF &&
+       git update-index --add DF &&
+       read_tree_twoway $treeDF $treeDFDF &&
+       git ls-files --stage >DFDFcheck.out &&
+       test_cmp DFDF.out DFDFcheck.out &&
+       check_cache_at DF/DF dirty &&
+       :
+'
+
+test_expect_success 'a/b (untracked) vs a case setup.' '
+       rm -f .git/index &&
+       : >a &&
+       git update-index --add a &&
+       treeM=$(git write-tree) &&
+       echo treeM $treeM &&
+       git ls-tree $treeM &&
+       git ls-files --stage >treeM.out &&
+
+       rm -f a &&
+       git update-index --remove a &&
+       mkdir a &&
+       : >a/b &&
+       treeH=$(git write-tree) &&
+       echo treeH $treeH &&
+       git ls-tree $treeH
+'
+
+test_expect_success 'a/b (untracked) vs a, plus c/d case test.' '
+       read_tree_u_must_fail -u -m "$treeH" "$treeM" &&
+       git ls-files --stage &&
+       test -f a/b
+'
+
+test_expect_success 'a/b vs a, plus c/d case setup.' '
+       rm -f .git/index &&
+       rm -fr a &&
+       : >a &&
+       mkdir c &&
+       : >c/d &&
+       git update-index --add a c/d &&
+       treeM=$(git write-tree) &&
+       echo treeM $treeM &&
+       git ls-tree $treeM &&
+       git ls-files --stage >treeM.out &&
+
+       rm -f a &&
+       mkdir a &&
+       : >a/b &&
+       git update-index --add --remove a a/b &&
+       treeH=$(git write-tree) &&
+       echo treeH $treeH &&
+       git ls-tree $treeH
+'
+
+test_expect_success 'a/b vs a, plus c/d case test.' '
+       read_tree_u_must_succeed -u -m "$treeH" "$treeM" &&
+       git ls-files --stage | tee >treeMcheck.out &&
+       test_cmp treeM.out treeMcheck.out
+'
 
 test_expect_success '-m references the correct modified tree' '
        echo >file-a &&
-- 
2.11.0.rc2.30.g7c4be45.dirty

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