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[PATCH] The diff-raw format updates.

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Update the diff-raw format as Linus and I discussed, except that
it does not use sequence of underscore '_' letters to express
nonexistence.  All '0' mode is used for that purpose instead.

The new diff-raw format can express rename/copy, and the earlier
restriction that -M and -C _must_ be used with the patch format
output is no longer necessary.  The patch makes -M and -C flags
independent of -p flag, so you need to say git-whatchanged -M -p
to get the diff/patch format.

Updated are both documentations and tests.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Junio C Hamano
2005-05-21 19:42:18 -07:00
committed by Linus Torvalds
parent 38c6f78059
commit 81e50eabf0
16 changed files with 326 additions and 317 deletions
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29
Documentation/diff-format.txt
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@ -16,25 +16,30 @@ git-diff-tree [-r] <tree-ish-1> <tree-ish-2> [<pattern>...]::
git-diff-files [<pattern>...]::
compares the cache and the files on the filesystem.
The following desription uses "old" and "new" to mean those
compared entities.
For files in old but not in new (i.e. removed):
An output line is formatted this way:
-<mode> \t <type> \t <object> \t <path>
':' <mode> ' ' <mode> ' ' <sha1> ' ' <sha1> I <path> I <path> L
For files not in old but in new (i.e. added):
By default, I and L are '\t' and '\n' respectively. When '-z'
flag is in effect, both I and L are '\0'.
+<mode> \t <type> \t <object> \t <path>
In each <mode>, <sha1> and <path> pair, left hand side describes
the left hand side of what is being compared (<tree-ish> in
git-diff-cache, <tree-ish-1> in git-diff-tree, cache contents in
git-diff-files). Non-existence is shown by having 000000 in the
<mode> column. That is, 000000 appears as the first <mode> for
newly created files, and as the second <mode> for deleted files.
For files that differ:
Usually two <path> are the same. When rename/copy detection is
used, however, an "create" and another "delete" records can be
merged into a single record that has two <path>, old name and
new name.
*<old-mode>-><new-mode> \t <type> \t <old-sha1>-><new-sha1> \t <path>
<sha1> is shown as all 0's if new is a file on the filesystem
and it is out of sync with the cache. Example:
<new-sha1> is shown as all 0's if new is a file on the
filesystem and it is out of sync with the cache. Example:
*100644->100644 blob 5be4a4.......->000000....... file.c
:100644 100644 5be4a4...... 000000...... file.c file.c
Generating patches with -p