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add--interactive: ignore all internal submodule changes

PATCH/RFC New Nguyễn Thái Ngọc Duy 2 participants 4 messages Jan 10, 2018 – Jan 13, 2018

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lore
#0 lore raw

For 'add -i' and 'add -p' the only action we can take on a dirty submodule entry (from the superproject perspective) is its SHA-1. The content changes inside do not matter, at least until interactive add has --recurse-submodules or something.

Ignore all dirty changes to reduce the questions 'add -i' and 'add -p' throw at the user when submodules are dirty.

---
$DAYJOB started to use submodules and this annoys me so much when I use 'git add -p'. I'm neither very familiar with add--interactive nor submodules code but this seems to work. Hopefully it's a correct change.

 git-add--interactive.perl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
git-add--interactive.perl +1 -1
index 28b325d754..964c3a7542 100755
@@ -262,7 +262,7 @@ sub list_modified {
 		}
 	}
 
-	for (run_cmd_pipe(qw(git diff-files --numstat --summary --raw --), @ARGV)) {
+	for (run_cmd_pipe(qw(git diff-files --ignore-submodules=dirty --numstat --summary --raw --), @ARGV)) {
 		if (($add, $del, $file) =
 		    /^([-\d]+)	([-\d]+)	(.*)/) {
 			$file = unquote_path($file);
Signature · 1 line
2.15.1.600.g899a5f85c6
#1 lore raw
Quoted 8 lines · Nguyễn Thái Ngọc Duy

For 'add -i' and 'add -p' the only action we can take on a dirty submodule entry (from the superproject perspective) is its SHA-1. The content changes inside do not matter, at least until interactive add has --recurse-submodules or something.

Ignore all dirty changes to reduce the questions 'add -i' and 'add -p' throw at the user when submodules are dirty.

Quoted 6 lines

---
$DAYJOB started to use submodules and this annoys me so much when I use 'git add -p'. I'm neither very familiar with add--interactive nor submodules code but this seems to work. Hopefully it's a correct change.

I would think this fixes your problem and it looks correct.

However I wonder about some subtle detail:
the "dirty" setting will ignore anything inside the submodule, and only pay attention to the delta in gitlinks between HEAD and index.

Maybe we'd want to have a mode "dirty-except-submodule-HEAD", which would ignore all submodule worktree changes, but if its HEAD is different than the gitlink in the superproject index or HEAD, such that checking out a different revision inside the submodule is not lost when staging things in the superproject for a new commit?

Quoted 20 lines
 git-add--interactive.perl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
git-add--interactive.perl +1 -2
index 28b325d754..964c3a7542 100755
@@ -262,7 +262,7 @@ sub list_modified {
                }
        }
 
-       for (run_cmd_pipe(qw(git diff-files --numstat --summary --raw --), @ARGV)) {
+       for (run_cmd_pipe(qw(git diff-files --ignore-submodules=dirty --numstat --summary --raw --), @ARGV)) {
                if (($add, $del, $file) =
                    /^([-\d]+)  ([-\d]+)        (.*)/) {
                        $file = unquote_path($file);
--

2.15.1.600.g899a5f85c6

author
#2 lore raw
Quoted 16 lines · Stefan Beller
Quoted 8 lines · Nguyễn Thái Ngọc Duy

For 'add -i' and 'add -p' the only action we can take on a dirty submodule entry (from the superproject perspective) is its SHA-1. The content changes inside do not matter, at least until interactive add has --recurse-submodules or something.

Ignore all dirty changes to reduce the questions 'add -i' and 'add -p' throw at the user when submodules are dirty.

Quoted 6 lines

---
$DAYJOB started to use submodules and this annoys me so much when I use 'git add -p'. I'm neither very familiar with add--interactive nor submodules code but this seems to work. Hopefully it's a correct change.

Quoted 5 lines

I would think this fixes your problem and it looks correct.

However I wonder about some subtle detail:
the "dirty" setting will ignore anything inside the submodule, and only pay attention to the delta in gitlinks between HEAD and index.

Wait, why does diff-files, the command about worktree and index, look at HEAD? Testing, testing... no I think it still works as expected

Quoted 1 line

~/w/git/temp/z $ git ls-files --stage foo

160000 41521690bee4b76ad108a403b79415f8591a5592 0 foo

Quoted 1 line

~/w/git/temp/z $ git -C foo rev-parse HEAD

3bc15b2e78ec3a5c5ea27715f20adaa2669446b1

Quoted 1 line

~/w/git/temp/z $ ../git diff --ignore-submodules=dirty foo

foo +1 -1
index 4152169..3bc15b2 160000
@@ -1 +1 @@
-Subproject commit 41521690bee4b76ad108a403b79415f8591a5592
+Subproject commit 3bc15b2e78ec3a5c5ea27715f20adaa2669446b1
Quoted 1 line

~/w/git/temp/z $ ../git diff-files --ignore-submodules=dirty foo

:160000 160000 41521690bee4b76ad108a403b79415f8591a5592
0000000000000000000000000000000000000000 M foo

If I reset foo/.git/HEAD back to 4152169... then diff-files --ignore..=dirty returns empty. So I think it does check submodule's HEAD.

Quoted 5 lines

Maybe we'd want to have a mode "dirty-except-submodule-HEAD", which would ignore all submodule worktree changes, but if its HEAD is different than the gitlink in the superproject index or HEAD, such that checking out a different revision inside the submodule is not lost when staging things in the superproject for a new commit?

Signature · 1 line
Duy
#3 lore raw

PATCH v2 1/1 add--interactive: ignore submodule changes except HEAD

In reply to Nguyễn Thái Ngọc Duy

For 'add -i' and 'add -p', the only action we can take on a dirty submodule entry is update the index with a new value from its HEAD. The content changes inside (from its own index, untracked files...) do not matter, at least until 'git add -i' learns about launching a new interactive add session inside a submodule.

Ignore all other submodules changes except HEAD. This reduces the number of entries the user has to check through in 'git add -i', and the number of 'no' they have to answer to 'git add -p' when dirty submodules are present.

---
v2 now has some tests. The commit message is rephrased a bit.

 git-add--interactive.perl  |  2 +-
 t/t3701-add-interactive.sh | 48 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+), 1 deletion(-)
git-add--interactive.perl +1 -1
index 28b325d754..964c3a7542 100755
@@ -262,7 +262,7 @@ sub list_modified {
 		}
 	}
 
-	for (run_cmd_pipe(qw(git diff-files --numstat --summary --raw --), @ARGV)) {
+	for (run_cmd_pipe(qw(git diff-files --ignore-submodules=dirty --numstat --summary --raw --), @ARGV)) {
 		if (($add, $del, $file) =
 		    /^([-\d]+)	([-\d]+)	(.*)/) {
 			$file = unquote_path($file);
t/t3701-add-interactive.sh +48 -0

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Signature · 1 line
2.15.1.600.g899a5f85c6