Re: [Q] Abbreviated history graph?

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On Mon, 3 Nov 2008, Linus Torvalds wrote:
> 
> Side note: it's certainly possible that we could improve on this. Right 
> now, "--simplify-namespace" will totally override any path simplification, 
> so you can't get a combination of pathnames _and_ naming commits. I don't 
> know exactly what the rules should be, but I could imagine that we could 
> do something like:
> 
>  - if no pathnames are given, work the way the current patch-series works.
> 
>  - if path-names are given, make rev_compare_tree() truen 
>    REV_TREE_DIFFERENT if a name decoration _or_ a tree difference exists.

The incremental diff to do this would be something like the appended.

		Linus
---
 revision.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/revision.c b/revision.c
index b48e626..1b716c7 100644
--- a/revision.c
+++ b/revision.c
@@ -311,7 +311,10 @@ static int rev_compare_tree(struct rev_info *revs, struct commit *parent, struct
 	if (revs->simplify_namespace) {
 		struct name_decoration *name;
 		name = lookup_decoration(&name_decoration, &commit->object);
-		return name ? REV_TREE_DIFFERENT : REV_TREE_SAME;
+		if (name)
+			return REV_TREE_DIFFERENT;
+		if (!revs->prune_data)
+			return REV_TREE_SAME;
 	}
 	if (!t2)
 		return REV_TREE_DIFFERENT;
--
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