summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorPrathamesh Chavan <pc44800@gmail.com>2018-05-09 00:29:49 (GMT)
committerJunio C Hamano <gitster@pobox.com>2018-05-09 03:37:00 (GMT)
commitc033a2f62dda774de8cccc83b7f1918377995d6c (patch)
tree3f7723b2d6800286553045eae10ed6e08331562d
parentccdcbd54c4475c2238b310f7113ab3075b5abc9c (diff)
downloadgit-c033a2f62dda774de8cccc83b7f1918377995d6c.zip
git-c033a2f62dda774de8cccc83b7f1918377995d6c.tar.gz
git-c033a2f62dda774de8cccc83b7f1918377995d6c.tar.bz2
submodule foreach: correct '$path' in nested submodules from a subdirectory
When running 'git submodule foreach --recursive' from a subdirectory of your repository, nested submodules get a bogus value for $path: For a submodule 'sub' that contains a nested submodule 'nested', running 'git -C dir submodule foreach echo $path' from the root of the superproject would report path='../nested' for the nested submodule. The first part '../' is derived from the logic computing the relative path from $pwd to the root of the superproject. The second part is the submodule path inside the submodule. This value is of little use and is hard to document. Also, in git-submodule.txt, $path is documented to be the "name of the submodule directory relative to the superproject", but "the superproject" is ambiguous. To resolve both these issues, we could: (a) Change "the superproject" to "its immediate superproject", so $path would be "nested" instead of "../nested". (b) Change "the superproject" to "the superproject the original command was run from", so $path would be "sub/nested" instead of "../nested". (c) Change "the superproject" to "the directory the original command was run from", so $path would be "../sub/nested" instead of "../nested". The behavior for (c) was attempted to be introduced in 091a6eb0fe (submodule: drop the top-level requirement, 2013-06-16) with the intent for $path to be relative from $pwd to the submodule worktree, but that did not work for nested submodules, as the intermittent submodules were not included in the path. If we were to fix the meaning of the $path using (a), we would break any existing submodule user that runs foreach from non-root of the superproject as the non-nested submodule '../sub' would change its path to 'sub'. If we were to fix the meaning of $path using (b), then we would break any user that uses nested submodules (even from the root directory) as the 'nested' would become 'sub/nested'. If we were to fix the meaning of $path using (c), then we would break the same users as in (b) as 'nested' would become 'sub/nested' from the root directory of the superproject. All groups can be found in the wild. The author has no data if one group outweighs the other by large margin, and offending each one seems equally bad at first. However in the authors imagination it is better to go with (a) as running from a sub directory sounds like it is carried out by a human rather than by some automation task. With a human on the keyboard the feedback loop is short and the changed behavior can be adapted to quickly unlike some automation that can break silently. Discussed-with: Ramsay Jones <ramsay@ramsayjones.plus.com> Signed-off-by: Prathamesh Chavan <pc44800@gmail.com> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rwxr-xr-xgit-submodule.sh1
-rwxr-xr-xt/t7407-submodule-foreach.sh36
2 files changed, 34 insertions, 3 deletions
diff --git a/git-submodule.sh b/git-submodule.sh
index 2491496..331d71c 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -345,7 +345,6 @@ cmd_foreach()
prefix="$prefix$sm_path/"
sanitize_submodule_env
cd "$sm_path" &&
- sm_path=$(git submodule--helper relative-path "$sm_path" "$wt_prefix") &&
# we make $path available to scripts ...
path=$sm_path &&
if test $# -eq 1
diff --git a/t/t7407-submodule-foreach.sh b/t/t7407-submodule-foreach.sh
index 6ba5daf..5144cc6 100755
--- a/t/t7407-submodule-foreach.sh
+++ b/t/t7407-submodule-foreach.sh
@@ -82,9 +82,9 @@ test_expect_success 'test basic "submodule foreach" usage' '
cat >expect <<EOF
Entering '../sub1'
-$pwd/clone-foo1-../sub1-$sub1sha1
+$pwd/clone-foo1-sub1-$sub1sha1
Entering '../sub3'
-$pwd/clone-foo3-../sub3-$sub3sha1
+$pwd/clone-foo3-sub3-$sub3sha1
EOF
test_expect_success 'test "submodule foreach" from subdirectory' '
@@ -196,6 +196,38 @@ test_expect_success 'test messages from "foreach --recursive" from subdirectory'
) &&
test_i18ncmp expect actual
'
+sub1sha1=$(cd clone2/sub1 && git rev-parse HEAD)
+sub2sha1=$(cd clone2/sub2 && git rev-parse HEAD)
+sub3sha1=$(cd clone2/sub3 && git rev-parse HEAD)
+nested1sha1=$(cd clone2/nested1 && git rev-parse HEAD)
+nested2sha1=$(cd clone2/nested1/nested2 && git rev-parse HEAD)
+nested3sha1=$(cd clone2/nested1/nested2/nested3 && git rev-parse HEAD)
+submodulesha1=$(cd clone2/nested1/nested2/nested3/submodule && git rev-parse HEAD)
+
+cat >expect <<EOF
+Entering '../nested1'
+toplevel: $pwd/clone2 name: nested1 path: nested1 hash: $nested1sha1
+Entering '../nested1/nested2'
+toplevel: $pwd/clone2/nested1 name: nested2 path: nested2 hash: $nested2sha1
+Entering '../nested1/nested2/nested3'
+toplevel: $pwd/clone2/nested1/nested2 name: nested3 path: nested3 hash: $nested3sha1
+Entering '../nested1/nested2/nested3/submodule'
+toplevel: $pwd/clone2/nested1/nested2/nested3 name: submodule path: submodule hash: $submodulesha1
+Entering '../sub1'
+toplevel: $pwd/clone2 name: foo1 path: sub1 hash: $sub1sha1
+Entering '../sub2'
+toplevel: $pwd/clone2 name: foo2 path: sub2 hash: $sub2sha1
+Entering '../sub3'
+toplevel: $pwd/clone2 name: foo3 path: sub3 hash: $sub3sha1
+EOF
+
+test_expect_success 'test "submodule foreach --recursive" from subdirectory' '
+ (
+ cd clone2/untracked &&
+ git submodule foreach --recursive "echo toplevel: \$toplevel name: \$name path: \$sm_path hash: \$sha1" >../../actual
+ ) &&
+ test_i18ncmp expect actual
+'
cat > expect <<EOF
nested1-nested1