[PATCH] name-rev: Fix tag lookup on repository with mixed types of tags

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Commit 7550424804 (name-rev: include taggerdate in considering the best
name) introduced a bug in name-rev.

If a repository has both annotated and non-annotated tags, annotated
tag will always win, even if it was created decades after the commit.

Consider a repository that always used non-annotated tags, and at some
point started using annotated tags - name-rev --tags will return the
first annotated tags for all the old commits (in our repository it is
followed by ~5067 for one commit, or by ~120^2~21^2~88^2~87 for
another...). This is obviously not what the user expects.

The taggerdate should only be matched if *both tags* have it.
---
 builtin/name-rev.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 92a5d8a5d2..8f77023482 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c
@@ -46,11 +46,13 @@ static void name_rev(struct commit *commit,
  commit->util = name;
  goto copy_data;
  } else if (name->taggerdate > taggerdate ||
- (name->taggerdate == taggerdate &&
+ ((taggerdate == ULONG_MAX || name->taggerdate == taggerdate) &&
  name->distance > distance)) {
 copy_data:
  name->tip_name = tip_name;
- name->taggerdate = taggerdate;
+ if (taggerdate != ULONG_MAX) {
+ name->taggerdate = taggerdate;
+ }
  name->generation = generation;
  name->distance = distance;
  } else
-- 
2.13.1.windows.1.1.ga36e14b3aa



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