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[PATCH] Diff updates to express type changes

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With the introduction of type 'T' in the diff-raw output, and
the "apply-patch" program Linus has been quietly working on
without much advertisement, it started to make sense to emit
usable information in the "diff --git" patch output format as
well.  Earlier built-in diff driver punted and did not say
anything about a symbolic link changing into a file or vice
versa, but this version represents it as a pair of deletion
and creation.

It also fixes a minor problem dealing with old archive created
with ancient git.  The earlier code was reporting file mode
change between 100664 and 100644 (we shouldn't).  The linux-2.6
git tree has a good example that exposes this problem.  A good
test case is commit ce1dc02f76432a46db149241e015a4f782974623.

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
2005-05-26 02:24:30 -07:00
committed by Linus Torvalds
parent a577284aee
commit 4130b99571
2 changed files with 42 additions and 9 deletions
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6
diffcore.h
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@ -48,6 +48,12 @@ struct diff_filepair {
#define DIFF_PAIR_TYPE_CHANGED(p) \
((S_IFMT & (p)->one->mode) != (S_IFMT & (p)->two->mode))
#define DIFF_PAIR_MODE_CHANGED(p) ((p)->one->mode != (p)->two->mode)
#define DIFF_FILE_CANON_MODE(mode) \
(S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
S_ISLNK(mode) ? S_IFLNK : S_IFDIR)
extern int diff_unmodified_pair(struct diff_filepair *);
struct diff_queue_struct {