Merge branch 'kb/full-history-compute-treesame-carefully-2'

Major update to the revision traversal logic to improve culling of
irrelevant parents while traversing a mergy history.

* kb/full-history-compute-treesame-carefully-2:
  revision.c: make default history consider bottom commits
  revision.c: don't show all merges for --parents
  revision.c: discount side branches when computing TREESAME
  revision.c: add BOTTOM flag for commits
  simplify-merges: drop merge from irrelevant side branch
  simplify-merges: never remove all TREESAME parents
  t6012: update test for tweaked full-history traversal
  revision.c: Make --full-history consider more merges
  Documentation: avoid "uninteresting"
  rev-list-options.txt: correct TREESAME for P
  t6111: add parents to tests
  t6111: allow checking the parents as well
  t6111: new TREESAME test set
  t6019: test file dropped in -s ours merge
  decorate.c: compact table when growing

1 files changed, 3 insertions, 1 deletions

diff --git a/revision.h b/revision.h
index a313a13..24547b5 100644
--- a/revision.h
+++ b/revision.h
@@ -15,7 +15,8 @@
 #define ADDED		(1u<<7)	/* Parents already parsed and added? */
 #define SYMMETRIC_LEFT	(1u<<8)
 #define PATCHSAME	(1u<<9)
-#define ALL_REV_FLAGS	((1u<<10)-1)
+#define BOTTOM		(1u<<10)
+#define ALL_REV_FLAGS	((1u<<11)-1)
 
 #define DECORATE_SHORT_REFS	1
 #define DECORATE_FULL_REFS	2
@@ -169,6 +170,7 @@ struct rev_info {
 	struct reflog_walk_info *reflog_info;
 	struct decoration children;
 	struct decoration merge_simplification;
+	struct decoration treesame;
 
 	/* notes-specific options: which refs to show */
 	struct display_notes_opt notes_opt;