add-interactive: fix deletion of non-empty files

Commit 24ab81a fixed the deletion of empty files, but broke
deletion of non-empty files. The approach it took was to
factor out the "deleted" line from the patch header into its
own hunk, the same way we do for mode changes. However,
unlike mode changes, we only showed the special "delete this
file" hunk if there were no other hunks. Otherwise, the user
would annoyingly be presented with _two_ hunks: one for
deleting the file and one for deleting the content.

This meant that in the non-empty case, we forgot about the
deleted line entirely, and we submitted a bogus patch to
git-apply (with "/dev/null" as the destination file, but not
marked as a deletion).

Instead, this patch combines the file deletion hunk and the
content deletion hunk (if there is one) into a single
deletion hunk which is either staged or not.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-add--interactive.perl b/git-add--interactive.perl
index 35f4ef11de581af129deb24cf9160fe817e4551b..02e97b90f116d9e3539b0a97c64ecd9064aafe81 100755 (executable)
--- a/git-add--interactive.perl
+++ b/git-add--interactive.perl
@@ -1217,7 +1217,11 @@ sub patch_update_file {
        if (@{$mode->{TEXT}}) {
                unshift @hunk, $mode;
        }
-       if (@{$deletion->{TEXT}} && !@hunk) {
+       if (@{$deletion->{TEXT}}) {
+               foreach my $hunk (@hunk) {
+                       push @{$deletion->{TEXT}}, @{$hunk->{TEXT}};
+                       push @{$deletion->{DISPLAY}}, @{$hunk->{DISPLAY}};
+               }
                @hunk = ($deletion);
        }
 

diff --git a/t/t3701-add-interactive.sh b/t/t3701-add-interactive.sh
index aa5909b14c822227bc8d9e7f2425b35458c9be03..0926b91d5754fa2a311e05d38a99f10b98072e71 100755 (executable)
--- a/t/t3701-add-interactive.sh
+++ b/t/t3701-add-interactive.sh
@@ -214,6 +214,26 @@ test_expect_success 'add first line works' '
        test_cmp expected diff
 '
 
+cat >expected <<EOF
+diff --git a/non-empty b/non-empty
+deleted file mode 100644
+index d95f3ad..0000000
+--- a/non-empty
++++ /dev/null
+@@ -1 +0,0 @@
+-content
+EOF
+test_expect_success 'deleting a non-empty file' '
+       git reset --hard &&
+       echo content >non-empty &&
+       git add non-empty &&
+       git commit -m non-empty &&
+       rm non-empty &&
+       echo y | git add -p non-empty &&
+       git diff --cached >diff &&
+       test_cmp expected diff
+'
+
 cat >expected <<EOF
 diff --git a/empty b/empty
 deleted file mode 100644