From f345b0a066572206aac4a4f9a57d746e213b6bff Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Mon, 30 May 2005 00:08:37 -0700 Subject: [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 t4008-diff-break-rewrite.sh 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 --- Documentation/git-diff-tree.txt | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'Documentation/git-diff-tree.txt') diff --git a/Documentation/git-diff-tree.txt b/Documentation/git-diff-tree.txt index f44e8cf135..f236949193 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 SYNOPSIS -------- -'git-diff-tree' [-p] [-r] [-z] [--stdin] [-M] [-R] [-C] [-S] [--pickaxe-all] [-m] [-s] [-v] [-t] []\* +'git-diff-tree' [-p] [-r] [-z] [--stdin] [-B] [-M] [-R] [-C] [-S] [--pickaxe-all] [-m] [-s] [-v] [-t] []\* DESCRIPTION ----------- @@ -33,6 +33,9 @@ OPTIONS generate patch (see section on generating patches). For git-diff-tree, this flag implies '-r' as well. +-B:: + Break complete rewrite changes into pairs of delete and create. + -M:: Detect renames. -- cgit v1.2.1