[PATCH] diff overhaul

This cleans up the way calls are made into the diff core from diff-tree
family and diff-helper.  Earlier, these programs had "if
(generating_patch)" sprinkled all over the place, but those ugliness are
gone and handled uniformly from the diff core, even when not generating
patch format.

This also allowed diff-cache and diff-files to acquire -R
(reverse) option to generate diff in reverse.  Users of
diff-tree can swap two trees easily so I did not add -R there.

[ Linus' note: I'll add -R to "diff-tree" too, since a "commit
  diff" doesn't have another tree to switch around: the other
  tree is always the parent(s) of the commit ]

Also -M<digits-as-mantissa> suggestion made by Linus has been
implemented.

Documentation updates are also included.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/diff.h b/diff.h
index cce46491bf..86a645afee 100644
--- a/diff.h
+++ b/diff.h
@@ -17,8 +17,10 @@ extern void diff_change(unsigned mode1, unsigned mode2,
 
 extern void diff_unmerge(const char *path);
 
+extern int diff_scoreopt_parse(const char *opt);
+
 extern void diff_setup(int detect_rename, int minimum_score,
-		       int reverse,
+		       int reverse, int raw_output,
 		       const char **spec, int cnt);
 
 extern void diff_flush(void);