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authorMatt McCutchen <matt@mattmccutchen.net>2008-10-11 05:56:15 +0400
committerJunio C Hamano <gitster@pobox.com>2008-12-08 01:57:57 +0300
commitdbc2fb6b841dd3a72c52a5a161e2362a26fc65f5 (patch)
tree8171a2c869f6b1ef3a8a849fab1af952874d77de
parent3927bbe9a4d4033551dea39ac1abb9cdc45d822c (diff)
"git diff <tree>{3,}": do not reverse order of arguments
According to the message of commit 0fe7c1de16f71312e6adac4b85bddf0d62a47168, "git diff" with three or more trees expects the merged tree first followed by the parents, in order. However, this command reversed the order of its arguments, resulting in confusing diffs. A comment /* Again, the revs are all reverse */ suggested there was a reason for this, but I can't figure out the reason, so I removed the reversal of the arguments. Test case included. Signed-off-by: Matt McCutchen <matt@mattmccutchen.net> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
-rw-r--r--builtin-diff.c4
-rwxr-xr-xt/t4013-diff-various.sh1
-rw-r--r--t/t4013/diff.diff_master_master^_side29
3 files changed, 31 insertions, 3 deletions
diff --git a/builtin-diff.c b/builtin-diff.c
index 26cf678591..375a0d3302 100644
--- a/builtin-diff.c
+++ b/builtin-diff.c
@@ -175,10 +175,8 @@ static int builtin_diff_combined(struct rev_info *revs,
if (!revs->dense_combined_merges && !revs->combine_merges)
revs->dense_combined_merges = revs->combine_merges = 1;
parent = xmalloc(ents * sizeof(*parent));
- /* Again, the revs are all reverse */
for (i = 0; i < ents; i++)
- hashcpy((unsigned char *)(parent + i),
- ent[ents - 1 - i].item->sha1);
+ hashcpy((unsigned char *)(parent + i), ent[i].item->sha1);
diff_tree_combined(parent[0], parent + 1, ents - 1,
revs->dense_combined_merges, revs);
return 0;
diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index 9337b81064..99d9e0ba13 100755
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -258,6 +258,7 @@ diff --patch-with-stat -r initial..side
diff --patch-with-raw -r initial..side
diff --name-status dir2 dir
diff --no-index --name-status dir2 dir
+diff master master^ side
EOF
test_done
diff --git a/t/t4013/diff.diff_master_master^_side b/t/t4013/diff.diff_master_master^_side
new file mode 100644
index 0000000000..50ec9cadd6
--- /dev/null
+++ b/t/t4013/diff.diff_master_master^_side
@@ -0,0 +1,29 @@
+$ git diff master master^ side
+diff --cc dir/sub
+index cead32e,7289e35..992913c
+--- a/dir/sub
++++ b/dir/sub
+@@@ -1,6 -1,4 +1,8 @@@
+ A
+ B
+ +C
+ +D
+ +E
+ +F
++ 1
++ 2
+diff --cc file0
+index b414108,f4615da..10a8a9f
+--- a/file0
++++ b/file0
+@@@ -1,6 -1,6 +1,9 @@@
+ 1
+ 2
+ 3
+ +4
+ +5
+ +6
++ A
++ B
++ C
+$