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-rw-r--r--revision.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/revision.c b/revision.c
index 3c2eb12..bcdb6a1 100644
--- a/revision.c
+++ b/revision.c
@@ -213,6 +213,13 @@ static int everybody_uninteresting(struct commit_list *orig)
return 1;
}
+/*
+ * The goal is to get REV_TREE_NEW as the result only if the
+ * diff consists of all '+' (and no other changes), and
+ * REV_TREE_DIFFERENT otherwise (of course if the trees are
+ * the same we want REV_TREE_SAME). That means that once we
+ * get to REV_TREE_DIFFERENT, we do not have to look any further.
+ */
static int tree_difference = REV_TREE_SAME;
static void file_add_remove(struct diff_options *options,
@@ -236,6 +243,8 @@ static void file_add_remove(struct diff_options *options,
diff = REV_TREE_NEW;
}
tree_difference = diff;
+ if (tree_difference == REV_TREE_DIFFERENT)
+ options->has_changes = 1;
}
static void file_change(struct diff_options *options,
@@ -245,6 +254,7 @@ static void file_change(struct diff_options *options,
const char *base, const char *path)
{
tree_difference = REV_TREE_DIFFERENT;
+ options->has_changes = 1;
}
int rev_compare_tree(struct rev_info *revs, struct tree *t1, struct tree *t2)
@@ -254,6 +264,7 @@ int rev_compare_tree(struct rev_info *revs, struct tree *t1, struct tree *t2)
if (!t2)
return REV_TREE_DIFFERENT;
tree_difference = REV_TREE_SAME;
+ revs->pruning.has_changes = 0;
if (diff_tree_sha1(t1->object.sha1, t2->object.sha1, "",
&revs->pruning) < 0)
return REV_TREE_DIFFERENT;
@@ -277,11 +288,12 @@ int rev_same_tree_as_empty(struct rev_info *revs, struct tree *t1)
empty.buf = "";
empty.size = 0;
- tree_difference = 0;
+ tree_difference = REV_TREE_SAME;
+ revs->pruning.has_changes = 0;
retval = diff_tree(&empty, &real, "", &revs->pruning);
free(tree);
- return retval >= 0 && !tree_difference;
+ return retval >= 0 && (tree_difference == REV_TREE_SAME);
}
static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit)
@@ -545,6 +557,7 @@ void init_revisions(struct rev_info *revs, const char *prefix)
revs->ignore_merges = 1;
revs->simplify_history = 1;
revs->pruning.recursive = 1;
+ revs->pruning.quiet = 1;
revs->pruning.add_remove = file_add_remove;
revs->pruning.change = file_change;
revs->lifo = 1;