submodule status: correct path handling in recursive submodules

The new test which is a replica of the previous test except
that it executes from a sub directory. Prior to this patch
the test failed by having too many '../' prefixed:

  --- expect	2016-03-29 19:02:33.087336115 +0000
  +++ actual	2016-03-29 19:02:33.359343311 +0000
  @@ -1,7 +1,7 @@
    b23f134787d96fae589a6b76da41f4db112fc8db ../nested1 (heads/master)
  -+25d56d1ddfb35c3e91ff7d8f12331c2e53147dcc ../nested1/nested2 (file2)
  - 5ec83512b76a0b8170b899f8e643913c3e9b72d9 ../nested1/nested2/nested3 (heads/master)
  - 509f622a4f36a3e472affcf28fa959174f3dd5b5 ../nested1/nested2/nested3/submodule (heads/master)
  ++25d56d1ddfb35c3e91ff7d8f12331c2e53147dcc ../../nested1/nested2 (file2)
  + 5ec83512b76a0b8170b899f8e643913c3e9b72d9 ../../../nested1/nested2/nested3 (heads/master)
  + 509f622a4f36a3e472affcf28fa959174f3dd5b5 ../../../../nested1/nested2/nested3/submodule (heads/master)
    0c90624ab7f1aaa301d3bb79f60dcfed1ec4897f ../sub1 (0c90624)
    0c90624ab7f1aaa301d3bb79f60dcfed1ec4897f ../sub2 (0c90624)
    509f622a4f36a3e472affcf28fa959174f3dd5b5 ../sub3 (heads/master)

The path code in question:
  displaypath=$(relative_path "$prefix$sm_path")
  prefix=$displaypath
  if recursive:
    eval cmd_status

That way we change `prefix` each iteration to contain another
'../', because of the the relative_path computation is done
on an already computed relative path.

We must call relative_path exactly once with `wt_prefix` non empty.
Further calls in recursive instances to to calculate the displaypath
already incorporate the correct prefix from before. Fix the issue by
clearing `wt_prefix` in recursive calls.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-submodule.sh b/git-submodule.sh
index 9fffa5c54a88022960260a1b94b8ec41ab4c4825..1024774f611bd388c6c917ff2d4b78086fcf617e 100755 (executable)
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -1159,6 +1159,7 @@ cmd_status()
                        (
                                prefix="$displaypath/"
                                clear_local_git_env
+                               wt_prefix=
                                cd "$sm_path" &&
                                eval cmd_status
                        ) ||

diff --git a/t/t7407-submodule-foreach.sh b/t/t7407-submodule-foreach.sh
index 776b3495088f7a47755cbb732ae4e83b91dd46b1..4b35e12a73531beb7becf141027a9995ea145f90 100755 (executable)
--- a/t/t7407-submodule-foreach.sh
+++ b/t/t7407-submodule-foreach.sh
@@ -277,6 +277,27 @@ test_expect_success 'ensure "status --cached --recursive" preserves the --cached
        test_cmp expect actual
 '
 
+nested2sha1=$(git -C clone3/nested1/nested2 rev-parse HEAD)
+
+cat > expect <<EOF
+ $nested1sha1 ../nested1 (heads/master)
++$nested2sha1 ../nested1/nested2 (file2)
+ $nested3sha1 ../nested1/nested2/nested3 (heads/master)
+ $submodulesha1 ../nested1/nested2/nested3/submodule (heads/master)
+ $sub1sha1 ../sub1 ($sub1sha1_short)
+ $sub2sha1 ../sub2 ($sub2sha1_short)
+ $sub3sha1 ../sub3 (heads/master)
+EOF
+
+test_expect_success 'test "status --recursive" from sub directory' '
+       (
+               cd clone3 &&
+               mkdir tmp && cd tmp &&
+               git submodule status --recursive > ../../actual
+       ) &&
+       test_cmp expect actual
+'
+
 test_expect_success 'use "git clone --recursive" to checkout all submodules' '
        git clone --recursive super clone4 &&
        (