path: root/Documentation/git-diff-tree.txt
diff options
authorJunio C Hamano <>2005-05-30 07:08:37 (GMT)
committerLinus Torvalds <>2005-05-30 17:35:49 (GMT)
commitf345b0a066572206aac4a4f9a57d746e213b6bff (patch)
tree60d5548ce7ca6e62b8b934cc016c01ddb373c3fb /Documentation/git-diff-tree.txt
parent2cd68882ee8629f9782be017007fff4c78e45e45 (diff)
[PATCH] Add -B flag to diff-* brothers.
A new diffcore transformation, diffcore-break.c, is introduced. When the -B flag is given, a patch that represents a complete rewrite is broken into a deletion followed by a creation. This makes it easier to review such a complete rewrite patch. The -B flag takes the same syntax as the -M and -C flags to specify the minimum amount of non-source material the resulting file needs to have to be considered a complete rewrite, and defaults to 99% if not specified. As the new test demonstrates, if a file is a complete rewrite, it is broken into a delete/create pair, which can further be subjected to the usual rename detection if -M or -C is used. For example, if file0 gets completely rewritten to make it as if it were rather based on file1 which itself disappeared, the following happens: The original change looks like this: file0 --> file0' (quite different from file0) file1 --> /dev/null After diffcore-break runs, it would become this: file0 --> /dev/null /dev/null --> file0' file1 --> /dev/null Then diffcore-rename matches them up: file1 --> file0' The internal score values are finer grained now. Earlier maximum of 10000 has been raised to 60000; there is no user visible changes but there is no reason to waste available bits. Signed-off-by: Junio C Hamano <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'Documentation/git-diff-tree.txt')
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/git-diff-tree.txt b/Documentation/git-diff-tree.txt
index f44e8cf..f236949 100644
--- a/Documentation/git-diff-tree.txt
+++ b/Documentation/git-diff-tree.txt
@@ -9,7 +9,7 @@ git-diff-tree - Compares the content and mode of blobs found via two tree object
-'git-diff-tree' [-p] [-r] [-z] [--stdin] [-M] [-R] [-C] [-S<string>] [--pickaxe-all] [-m] [-s] [-v] [-t] <tree-ish> <tree-ish> [<pattern>]\*
+'git-diff-tree' [-p] [-r] [-z] [--stdin] [-B] [-M] [-R] [-C] [-S<string>] [--pickaxe-all] [-m] [-s] [-v] [-t] <tree-ish> <tree-ish> [<pattern>]\*
@@ -33,6 +33,9 @@ OPTIONS
generate patch (see section on generating patches). For
git-diff-tree, this flag implies '-r' as well.
+ Break complete rewrite changes into pairs of delete and create.
Detect renames.