[PATCH] git-for-each-ref: add new field name "symbolic"

[PATCH] git-for-each-ref: add new field name "symbolic"

[Larry D'Anna]

%(symbolic) will expand to "true" for symbolic refs, and "false" otherwise.
This is a lot faster than calling git-symbolic-ref on every single ref from your
shell script.

Signed-off-by: Larry D'Anna <larry@elder-gods.org>
---
 Documentation/git-for-each-ref.txt |    3 +++
 builtin-for-each-ref.c             |    5 +++++
 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/Documentation/git-for-each-ref.txt b/Documentation/git-for-each-ref.txt
index 7e83288..c2a694f 100644
--- a/Documentation/git-for-each-ref.txt
+++ b/Documentation/git-for-each-ref.txt
@@ -92,6 +92,9 @@ upstream::
 	from the displayed ref. Respects `:short` in the same way as
 	`refname` above.
 
+symbolic::
+	"true" for symbolic refs, "false" otherwise.
+
 In addition to the above, for commit and tag objects, the header
 field names (`tree`, `parent`, `object`, `type`, and `tag`) can
 be used to specify the value in the header field.
diff --git a/builtin-for-each-ref.c b/builtin-for-each-ref.c
index a5a83f1..fd6973e 100644
--- a/builtin-for-each-ref.c
+++ b/builtin-for-each-ref.c
@@ -33,6 +33,7 @@ struct ref_sort {
 struct refinfo {
 	char *refname;
 	unsigned char objectname[20];
+	int flag;
 	struct atom_value *value;
 };
 
@@ -66,6 +67,7 @@ static struct {
 	{ "creatordate", FIELD_TIME },
 	{ "subject" },
 	{ "body" },
+	{ "symbolic" },
 	{ "contents" },
 	{ "upstream" },
 };
@@ -576,6 +578,8 @@ static void populate_value(struct refinfo *ref)
 
 		if (!prefixcmp(name, "refname"))
 			refname = ref->refname;
+		else if (!prefixcmp(name, "symbolic"))
+			refname = (ref->flag & REF_ISSYMREF) ? "true" : "false";
 		else if (!prefixcmp(name, "upstream")) {
 			struct branch *branch;
 			/* only local branches may have an upstream */
@@ -716,6 +720,7 @@ static int grab_single_ref(const char *refname, const unsigned char *sha1, int f
 	 * by maxcount logic.
 	 */
 	ref = xcalloc(1, sizeof(*ref));
+	ref->flag = flag;
 	ref->refname = xstrdup(refname);
 	hashcpy(ref->objectname, sha1);
 
-- 
1.7.0.rc2.40.g7d8aa

Re: [PATCH] git-for-each-ref: add new field name "symbolic"

[Junio C Hamano]

Larry D'Anna <larry@elder-gods.org> writes:

> %(symbolic) will expand to "true" for symbolic refs, and "false" otherwise.
> This is a lot faster than calling git-symbolic-ref on every single ref from your
> shell script.

I think this is a good idea, but I suspect that much more than half of
people who iterate over for-each-ref output and run symbolic-ref would
actually want to learn what actual ref a symbolic one points at.  So you
may not be helping as much people as you could by going in this direction.

Instead of expanding to "true", why not make it show the expansion if it
is symbolic, and to empty if it is not?

Re: [PATCH] git-for-each-ref: add new field name "symbolic"

[Jeff King]

On Fri, Feb 12, 2010 at 11:45:50PM -0800, Junio C Hamano wrote:

> Larry D'Anna <larry@elder-gods.org> writes:
> 
> > %(symbolic) will expand to "true" for symbolic refs, and "false" otherwise.
> > This is a lot faster than calling git-symbolic-ref on every single ref from your
> > shell script.
> 
> I think this is a good idea, but I suspect that much more than half of
> people who iterate over for-each-ref output and run symbolic-ref would
> actually want to learn what actual ref a symbolic one points at.  So you
> may not be helping as much people as you could by going in this direction.
> 
> Instead of expanding to "true", why not make it show the expansion if it
> is symbolic, and to empty if it is not?

That was my first thought, too. Unfortunately it needs some pretty heavy
refactoring of the for_each_ref call chain, as we throw away the
dereferenced ref name at the very bottom.

So while I would be in favor of a real "%(symbolic)" as you describe, it
is significantly more work. If we are just going to do a flag check,
though, I would much rather see it called "%(issymbolic)" or something
so that "%(symbolic)" can be used later for the actual value.

One other alternative would be to simply expose "%(flags)" which would
expand to nothing, "symbolic", "packed", or "symbolic,packed".

-Peff

[PATCH 0/4] for-each-ref --format='%(symref) %(symref:short) %(flag)'

[Junio C Hamano]

Here is my attempt to summarize the discussion so far.

Junio C Hamano (4):
  builtin-for-each-ref.c: comment fixes
  builtin-for-each-ref.c: check if we need to peel onion while parsing
    the format
  for-each-ref --format='%(symref) %(symref:short)'
  for-each-ref --format='%(flag)'

 builtin-for-each-ref.c |   77 ++++++++++++++++++++++++++++++++++++-----------
 1 files changed, 59 insertions(+), 18 deletions(-)

[PATCH 1/4] builtin-for-each-ref.c: comment fixes

[Junio C Hamano]

The primary purpose of this is to get rid of stale comments that lamented
the lack of callback parameter from for_each_ref(), which we have already
fixed.  While at it, adjust the multi-line comment style as well.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 builtin-for-each-ref.c |   26 ++++++++++++++++----------
 1 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/builtin-for-each-ref.c b/builtin-for-each-ref.c
index a5a83f1..3698e82 100644
--- a/builtin-for-each-ref.c
+++ b/builtin-for-each-ref.c
@@ -143,7 +143,8 @@ static const char *find_next(const char *cp)
 {
 	while (*cp) {
 		if (*cp == '%') {
-			/* %( is the start of an atom;
+			/*
+			 * %( is the start of an atom;
 			 * %% is a quoted per-cent.
 			 */
 			if (cp[1] == '(')
@@ -420,7 +421,8 @@ static void grab_person(const char *who, struct atom_value *val, int deref, stru
 			grab_date(wholine, v, name);
 	}
 
-	/* For a tag or a commit object, if "creator" or "creatordate" is
+	/*
+	 * For a tag or a commit object, if "creator" or "creatordate" is
 	 * requested, do something special.
 	 */
 	if (strcmp(who, "tagger") && strcmp(who, "committer"))
@@ -502,7 +504,8 @@ static void grab_sub_body_contents(struct atom_value *val, int deref, struct obj
 	}
 }
 
-/* We want to have empty print-string for field requests
+/*
+ * We want to have empty print-string for field requests
  * that do not apply (e.g. "authordate" for a tag object)
  */
 static void fill_missing_values(struct atom_value *val)
@@ -633,18 +636,21 @@ static void populate_value(struct refinfo *ref)
 	if (!eaten)
 		free(buf);
 
-	/* If there is no atom that wants to know about tagged
+	/*
+	 * If there is no atom that wants to know about tagged
 	 * object, we are done.
 	 */
 	if (!need_tagged || (obj->type != OBJ_TAG))
 		return;
 
-	/* If it is a tag object, see if we use a value that derefs
+	/*
+	 * If it is a tag object, see if we use a value that derefs
 	 * the object, and if we do grab the object it refers to.
 	 */
 	tagged = ((struct tag *)obj)->tagged->sha1;
 
-	/* NEEDSWORK: This derefs tag only once, which
+	/*
+	 * NEEDSWORK: This derefs tag only once, which
 	 * is good to deal with chains of trust, but
 	 * is not consistent with what deref_tag() does
 	 * which peels the onion to the core.
@@ -681,9 +687,8 @@ struct grab_ref_cbdata {
 };
 
 /*
- * A call-back given to for_each_ref().  It is unfortunate that we
- * need to use global variables to pass extra information to this
- * function.
+ * A call-back given to for_each_ref().  Filter refs and keep them for
+ * later object processing.
  */
 static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
 {
@@ -711,7 +716,8 @@ static int grab_single_ref(const char *refname, const unsigned char *sha1, int f
 			return 0;
 	}
 
-	/* We do not open the object yet; sort may only need refname
+	/*
+	 * We do not open the object yet; sort may only need refname
 	 * to do its job and the resulting list may yet to be pruned
 	 * by maxcount logic.
 	 */
-- 
1.7.0.169.g57c99

[PATCH 2/4] builtin-for-each-ref.c: check if we need to peel onion while parsing the format

[Junio C Hamano]

Instead of iterating over the parsed atoms that are used in the output
format after all the parsing is done, check it while parsing the
format string.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 builtin-for-each-ref.c |    9 ++-------
 1 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/builtin-for-each-ref.c b/builtin-for-each-ref.c
index 3698e82..d68977e 100644
--- a/builtin-for-each-ref.c
+++ b/builtin-for-each-ref.c
@@ -133,6 +133,8 @@ static int parse_atom(const char *atom, const char *ep)
 				  (sizeof(*used_atom_type) * used_atom_cnt));
 	used_atom[at] = xmemdupz(atom, ep - atom);
 	used_atom_type[at] = valid_atom[i].cmp_type;
+	if (*atom == '*')
+		need_tagged = 1;
 	return at;
 }
 
@@ -944,13 +946,6 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
 	refs = cbdata.grab_array;
 	num_refs = cbdata.grab_cnt;
 
-	for (i = 0; i < used_atom_cnt; i++) {
-		if (used_atom[i][0] == '*') {
-			need_tagged = 1;
-			break;
-		}
-	}
-
 	sort_refs(sort, refs, num_refs);
 
 	if (!maxcount || num_refs < maxcount)
-- 
1.7.0.169.g57c99

[PATCH 3/4] for-each-ref --format='%(symref) %(symref:short)'

[Junio C Hamano]

New %(symref) output atom expands to the name of the ref a symbolic ref
points at, or an empty string if the ref being shown is not a symref.

This may help scripted Porcelain writers.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 builtin-for-each-ref.c |   20 +++++++++++++++++++-
 1 files changed, 19 insertions(+), 1 deletions(-)

diff --git a/builtin-for-each-ref.c b/builtin-for-each-ref.c
index d68977e..b9b03e1 100644
--- a/builtin-for-each-ref.c
+++ b/builtin-for-each-ref.c
@@ -33,6 +33,8 @@ struct ref_sort {
 struct refinfo {
 	char *refname;
 	unsigned char objectname[20];
+	int flag;
+	const char *symref;
 	struct atom_value *value;
 };
 
@@ -68,6 +70,7 @@ static struct {
 	{ "body" },
 	{ "contents" },
 	{ "upstream" },
+	{ "symref" },
 };
 
 /*
@@ -82,7 +85,7 @@ static struct {
  */
 static const char **used_atom;
 static cmp_type *used_atom_type;
-static int used_atom_cnt, sort_atom_limit, need_tagged;
+static int used_atom_cnt, sort_atom_limit, need_tagged, need_symref;
 
 /*
  * Used to parse format string and sort specifiers
@@ -135,6 +138,8 @@ static int parse_atom(const char *atom, const char *ep)
 	used_atom_type[at] = valid_atom[i].cmp_type;
 	if (*atom == '*')
 		need_tagged = 1;
+	if (!strcmp(used_atom[at], "symref"))
+		need_symref = 1;
 	return at;
 }
 
@@ -566,6 +571,16 @@ static void populate_value(struct refinfo *ref)
 
 	ref->value = xcalloc(sizeof(struct atom_value), used_atom_cnt);
 
+	if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
+		unsigned char unused1[20];
+		const char *symref;
+		symref = resolve_ref(ref->refname, unused1, 1, NULL);
+		if (symref)
+			ref->symref = xstrdup(symref);
+		else
+			ref->symref = "";
+	}
+
 	/* Fill in specials first */
 	for (i = 0; i < used_atom_cnt; i++) {
 		const char *name = used_atom[i];
@@ -581,6 +596,8 @@ static void populate_value(struct refinfo *ref)
 
 		if (!prefixcmp(name, "refname"))
 			refname = ref->refname;
+		else if (!prefixcmp(name, "symref"))
+			refname = ref->symref ? ref->symref : "";
 		else if (!prefixcmp(name, "upstream")) {
 			struct branch *branch;
 			/* only local branches may have an upstream */
@@ -726,6 +743,7 @@ static int grab_single_ref(const char *refname, const unsigned char *sha1, int f
 	ref = xcalloc(1, sizeof(*ref));
 	ref->refname = xstrdup(refname);
 	hashcpy(ref->objectname, sha1);
+	ref->flag = flag;
 
 	cnt = cb->grab_cnt;
 	cb->grab_array = xrealloc(cb->grab_array,
-- 
1.7.0.169.g57c99

Re: [PATCH 3/4] for-each-ref --format='%(symref) %(symref:short)'

[Jeff King]

On Sat, Feb 13, 2010 at 12:30:32PM -0800, Junio C Hamano wrote:

> New %(symref) output atom expands to the name of the ref a symbolic ref
> points at, or an empty string if the ref being shown is not a symref.

I think this is reasonable, but:

> +	if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
> +		unsigned char unused1[20];
> +		const char *symref;
> +		symref = resolve_ref(ref->refname, unused1, 1, NULL);
> +		if (symref)
> +			ref->symref = xstrdup(symref);
> +		else
> +			ref->symref = "";
> +	}

It feels ugly that we need to re-resolve the ref when we simply threw
that information away earlier from when we called resolve_ref in
get_ref_dir (which covers the loose case; for the packed case, I don't
believe we have actual symbolic refs in the packed list).

Unfortunately, passing that information up the callchain changes the
signature of each_ref_fn, which has a pretty big fallout. The patch is
below (it does not replace your 3/4; it merely gets the information up
to grab_single_ref).

The patch below is to show the extent of the change. The changes were
mostly mechanical, and I haven't extensively tested. However, it
_should_ be a no-op, as most callbacks just ignore the new information.
The exception is read_remote_branches, which was re-resolving just to
find symref information.

If we were going to do this for real, I would be tempted to actually
change the signature of each_ref_fn to take a struct so this doesn't
come up again, and do three patches:

  1/3: pass "struct reflist" to each_ref_fn
  2/3: add symref to "struct reflist"
  3/3: use added symref information in read_remote_branches

---
 bisect.c               |    2 +-
 builtin-branch.c       |    2 +-
 builtin-checkout.c     |    2 +-
 builtin-describe.c     |    2 +-
 builtin-fetch-pack.c   |    6 +++---
 builtin-fetch.c        |    2 +-
 builtin-for-each-ref.c |    2 +-
 builtin-fsck.c         |    6 +++---
 builtin-name-rev.c     |    2 +-
 builtin-pack-objects.c |    2 +-
 builtin-receive-pack.c |    4 ++--
 builtin-reflog.c       |    2 +-
 builtin-remote.c       |   15 ++++-----------
 builtin-replace.c      |    2 +-
 builtin-rev-parse.c    |    4 ++--
 builtin-show-branch.c  |   12 ++++++------
 builtin-show-ref.c     |    4 ++--
 builtin-tag.c          |    2 +-
 http-backend.c         |    2 +-
 log-tree.c             |    2 +-
 pack-refs.c            |    2 +-
 reachable.c            |    4 ++--
 refs.c                 |   32 ++++++++++++++++++++------------
 refs.h                 |    2 +-
 remote.c               |    4 ++--
 replace_object.c       |    3 ++-
 revision.c             |    4 ++--
 server-info.c          |    2 +-
 sha1_name.c            |    3 ++-
 transport.c            |    4 ++--
 upload-pack.c          |    4 ++--
 walker.c               |    2 +-
 32 files changed, 73 insertions(+), 70 deletions(-)

diff --git a/bisect.c b/bisect.c
index 6dc27ee..e45f345 100644
--- a/bisect.c
+++ b/bisect.c
@@ -436,7 +436,7 @@ static void sha1_array_push(struct sha1_array *array,
 }
 
 static int register_ref(const char *refname, const unsigned char *sha1,
-			int flags, void *cb_data)
+			int flags, const char *symref, void *cb_data)
 {
 	if (!strcmp(refname, "bad")) {
 		current_bad_sha1 = sha1;
diff --git a/builtin-branch.c b/builtin-branch.c
index a28a139..8d43fb4 100644
--- a/builtin-branch.c
+++ b/builtin-branch.c
@@ -257,7 +257,7 @@ static char *resolve_symref(const char *src, const char *prefix)
 	return xstrdup(dst);
 }
 
-static int append_ref(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
+static int append_ref(const char *refname, const unsigned char *sha1, int flags, const char *symref, void *cb_data)
 {
 	struct ref_list *ref_list = (struct ref_list*)(cb_data);
 	struct ref_item *newitem;
diff --git a/builtin-checkout.c b/builtin-checkout.c
index 5277817..6e31bc6 100644
--- a/builtin-checkout.c
+++ b/builtin-checkout.c
@@ -592,7 +592,7 @@ struct tracking_name_data {
 };
 
 static int check_tracking_name(const char *refname, const unsigned char *sha1,
-			       int flags, void *cb_data)
+			       int flags, const char *symref, void *cb_data)
 {
 	struct tracking_name_data *cb = cb_data;
 	const char *slash;
diff --git a/builtin-describe.c b/builtin-describe.c
index 71be2a9..5297a6f 100644
--- a/builtin-describe.c
+++ b/builtin-describe.c
@@ -62,7 +62,7 @@ static void add_to_known_names(const char *path,
 	found_names = 1;
 }
 
-static int get_name(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int get_name(const char *path, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	int might_be_tag = !prefixcmp(path, "refs/tags/");
 	struct commit *commit;
diff --git a/builtin-fetch-pack.c b/builtin-fetch-pack.c
index 8ed4a6f..dfab784 100644
--- a/builtin-fetch-pack.c
+++ b/builtin-fetch-pack.c
@@ -54,7 +54,7 @@ static void rev_list_push(struct commit *commit, int mark)
 	}
 }
 
-static int rev_list_insert_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int rev_list_insert_ref(const char *path, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	struct object *o = deref_tag(parse_object(sha1), path, 0);
 
@@ -64,7 +64,7 @@ static int rev_list_insert_ref(const char *path, const unsigned char *sha1, int
 	return 0;
 }
 
-static int clear_marks(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int clear_marks(const char *path, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	struct object *o = deref_tag(parse_object(sha1), path, 0);
 
@@ -422,7 +422,7 @@ done:
 
 static struct commit_list *complete;
 
-static int mark_complete(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int mark_complete(const char *path, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	struct object *o = parse_object(sha1);
 
diff --git a/builtin-fetch.c b/builtin-fetch.c
index 55c7d94..cbbf46a 100644
--- a/builtin-fetch.c
+++ b/builtin-fetch.c
@@ -533,7 +533,7 @@ static int prune_refs(struct transport *transport, struct ref *ref_map)
 }
 
 static int add_existing(const char *refname, const unsigned char *sha1,
-			int flag, void *cbdata)
+			int flag, const char *symref, void *cbdata)
 {
 	struct string_list *list = (struct string_list *)cbdata;
 	struct string_list_item *item = string_list_insert(refname, list);
diff --git a/builtin-for-each-ref.c b/builtin-for-each-ref.c
index a5a83f1..de43c09 100644
--- a/builtin-for-each-ref.c
+++ b/builtin-for-each-ref.c
@@ -685,7 +685,7 @@ struct grab_ref_cbdata {
  * need to use global variables to pass extra information to this
  * function.
  */
-static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	struct grab_ref_cbdata *cb = cb_data;
 	struct refinfo *ref;
diff --git a/builtin-fsck.c b/builtin-fsck.c
index 0929c7f..55f4996 100644
--- a/builtin-fsck.c
+++ b/builtin-fsck.c
@@ -444,7 +444,7 @@ static int fsck_handle_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
 	return 0;
 }
 
-static int fsck_handle_reflog(const char *logname, const unsigned char *sha1, int flag, void *cb_data)
+static int fsck_handle_reflog(const char *logname, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	for_each_reflog_ent(logname, fsck_handle_reflog_ent, NULL);
 	return 0;
@@ -455,7 +455,7 @@ static int is_branch(const char *refname)
 	return !strcmp(refname, "HEAD") || !prefixcmp(refname, "refs/heads/");
 }
 
-static int fsck_handle_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int fsck_handle_ref(const char *refname, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	struct object *obj;
 
@@ -477,7 +477,7 @@ static int fsck_handle_ref(const char *refname, const unsigned char *sha1, int f
 static void get_default_heads(void)
 {
 	if (head_points_at && !is_null_sha1(head_sha1))
-		fsck_handle_ref("HEAD", head_sha1, 0, NULL);
+		fsck_handle_ref("HEAD", head_sha1, 0, NULL, NULL);
 	for_each_ref(fsck_handle_ref, NULL);
 	if (include_reflogs)
 		for_each_reflog(fsck_handle_reflog, NULL);
diff --git a/builtin-name-rev.c b/builtin-name-rev.c
index 06a38ac..8b7ffb6 100644
--- a/builtin-name-rev.c
+++ b/builtin-name-rev.c
@@ -88,7 +88,7 @@ struct name_ref_data {
 	const char *ref_filter;
 };
 
-static int name_ref(const char *path, const unsigned char *sha1, int flags, void *cb_data)
+static int name_ref(const char *path, const unsigned char *sha1, int flags, const char *symref, void *cb_data)
 {
 	struct object *o = parse_object(sha1);
 	struct name_ref_data *data = cb_data;
diff --git a/builtin-pack-objects.c b/builtin-pack-objects.c
index e1d3adf..acc24fc 100644
--- a/builtin-pack-objects.c
+++ b/builtin-pack-objects.c
@@ -1766,7 +1766,7 @@ static void ll_find_deltas(struct object_entry **list, unsigned list_size,
 #define ll_find_deltas(l, s, w, d, p)	find_deltas(l, &s, w, d, p)
 #endif
 
-static int add_ref_tag(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int add_ref_tag(const char *path, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	unsigned char peeled[20];
 
diff --git a/builtin-receive-pack.c b/builtin-receive-pack.c
index 4320c93..1f22379 100644
--- a/builtin-receive-pack.c
+++ b/builtin-receive-pack.c
@@ -103,7 +103,7 @@ static int receive_pack_config(const char *var, const char *value, void *cb)
 	return git_default_config(var, value, cb);
 }
 
-static int show_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int show_ref(const char *path, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	if (!capabilities_to_send)
 		packet_write(1, "%s %s\n", sha1_to_hex(sha1), path);
@@ -118,7 +118,7 @@ static void write_head_info(void)
 {
 	for_each_ref(show_ref, NULL);
 	if (capabilities_to_send)
-		show_ref("capabilities^{}", null_sha1, 0, NULL);
+		show_ref("capabilities^{}", null_sha1, 0, NULL, NULL);
 
 }
 
diff --git a/builtin-reflog.c b/builtin-reflog.c
index 7498210..5e13334 100644
--- a/builtin-reflog.c
+++ b/builtin-reflog.c
@@ -383,7 +383,7 @@ static int expire_reflog(const char *ref, const unsigned char *sha1, int unused,
 	return status;
 }
 
-static int collect_reflog(const char *ref, const unsigned char *sha1, int unused, void *cb_data)
+static int collect_reflog(const char *ref, const unsigned char *sha1, int unused, const char *symref, void *cb_data)
 {
 	struct collected_reflog *e;
 	struct collect_reflog_cb *cb = cb_data;
diff --git a/builtin-remote.c b/builtin-remote.c
index 277765b..4cbd6fa 100644
--- a/builtin-remote.c
+++ b/builtin-remote.c
@@ -456,7 +456,7 @@ struct branches_for_remote {
 };
 
 static int add_branch_for_removal(const char *refname,
-	const unsigned char *sha1, int flags, void *cb_data)
+	const unsigned char *sha1, int flags, const char *symref, void *cb_data)
 {
 	struct branches_for_remote *branches = cb_data;
 	struct refspec refspec;
@@ -504,23 +504,16 @@ struct rename_info {
 };
 
 static int read_remote_branches(const char *refname,
-	const unsigned char *sha1, int flags, void *cb_data)
+	const unsigned char *sha1, int flags, const char *symref, void *cb_data)
 {
 	struct rename_info *rename = cb_data;
 	struct strbuf buf = STRBUF_INIT;
 	struct string_list_item *item;
-	int flag;
-	unsigned char orig_sha1[20];
-	const char *symref;
 
 	strbuf_addf(&buf, "refs/remotes/%s", rename->old);
 	if (!prefixcmp(refname, buf.buf)) {
 		item = string_list_append(xstrdup(refname), rename->remote_branches);
-		symref = resolve_ref(refname, orig_sha1, 1, &flag);
-		if (flag & REF_ISSYMREF)
-			item->util = xstrdup(symref);
-		else
-			item->util = NULL;
+		item->util = symref ? xstrdup(symref) : NULL;
 	}
 
 	return 0;
@@ -787,7 +780,7 @@ static void free_remote_ref_states(struct ref_states *states)
 }
 
 static int append_ref_to_tracked_list(const char *refname,
-	const unsigned char *sha1, int flags, void *cb_data)
+	const unsigned char *sha1, int flags, const char *symref, void *cb_data)
 {
 	struct ref_states *states = cb_data;
 	struct refspec refspec;
diff --git a/builtin-replace.c b/builtin-replace.c
index fe3a647..dc626d4 100644
--- a/builtin-replace.c
+++ b/builtin-replace.c
@@ -21,7 +21,7 @@ static const char * const git_replace_usage[] = {
 };
 
 static int show_reference(const char *refname, const unsigned char *sha1,
-			  int flag, void *cb_data)
+			  int flag, const char *symref, void *cb_data)
 {
 	const char *pattern = cb_data;
 
diff --git a/builtin-rev-parse.c b/builtin-rev-parse.c
index a8c5043..7705b76 100644
--- a/builtin-rev-parse.c
+++ b/builtin-rev-parse.c
@@ -178,13 +178,13 @@ static int show_default(void)
 	return 0;
 }
 
-static int show_reference(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int show_reference(const char *refname, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	show_rev(NORMAL, sha1, refname);
 	return 0;
 }
 
-static int anti_reference(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int anti_reference(const char *refname, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	show_rev(REVERSED, sha1, refname);
 	return 0;
diff --git a/builtin-show-branch.c b/builtin-show-branch.c
index 9f13caa..08fbff6 100644
--- a/builtin-show-branch.c
+++ b/builtin-show-branch.c
@@ -403,7 +403,7 @@ static int append_ref(const char *refname, const unsigned char *sha1,
 	return 0;
 }
 
-static int append_head_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int append_head_ref(const char *refname, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	unsigned char tmp[20];
 	int ofs = 11;
@@ -417,7 +417,7 @@ static int append_head_ref(const char *refname, const unsigned char *sha1, int f
 	return append_ref(refname + ofs, sha1, 0);
 }
 
-static int append_remote_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int append_remote_ref(const char *refname, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	unsigned char tmp[20];
 	int ofs = 13;
@@ -431,7 +431,7 @@ static int append_remote_ref(const char *refname, const unsigned char *sha1, int
 	return append_ref(refname + ofs, sha1, 0);
 }
 
-static int append_tag_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int append_tag_ref(const char *refname, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	if (prefixcmp(refname, "refs/tags/"))
 		return 0;
@@ -449,7 +449,7 @@ static int count_slash(const char *s)
 	return cnt;
 }
 
-static int append_matching_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int append_matching_ref(const char *refname, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	/* we want to allow pattern hold/<asterisk> to show all
 	 * branches under refs/heads/hold/, and v0.99.9? to show
@@ -465,9 +465,9 @@ static int append_matching_ref(const char *refname, const unsigned char *sha1, i
 	if (fnmatch(match_ref_pattern, tail, 0))
 		return 0;
 	if (!prefixcmp(refname, "refs/heads/"))
-		return append_head_ref(refname, sha1, flag, cb_data);
+		return append_head_ref(refname, sha1, flag, symref, cb_data);
 	if (!prefixcmp(refname, "refs/tags/"))
-		return append_tag_ref(refname, sha1, flag, cb_data);
+		return append_tag_ref(refname, sha1, flag, symref, cb_data);
 	return append_ref(refname, sha1, 0);
 }
 
diff --git a/builtin-show-ref.c b/builtin-show-ref.c
index 17ada88..5961f7f 100644
--- a/builtin-show-ref.c
+++ b/builtin-show-ref.c
@@ -26,7 +26,7 @@ static void show_one(const char *refname, const unsigned char *sha1)
 		printf("%s %s\n", hex, refname);
 }
 
-static int show_ref(const char *refname, const unsigned char *sha1, int flag, void *cbdata)
+static int show_ref(const char *refname, const unsigned char *sha1, int flag, const char *symref, void *cbdata)
 {
 	struct object *obj;
 	const char *hex;
@@ -102,7 +102,7 @@ match:
 	return 0;
 }
 
-static int add_existing(const char *refname, const unsigned char *sha1, int flag, void *cbdata)
+static int add_existing(const char *refname, const unsigned char *sha1, int flag, const char *symref, void *cbdata)
 {
 	struct string_list *list = (struct string_list *)cbdata;
 	string_list_insert(refname, list);
diff --git a/builtin-tag.c b/builtin-tag.c
index 4ef1c4f..ae9b78b 100644
--- a/builtin-tag.c
+++ b/builtin-tag.c
@@ -32,7 +32,7 @@ struct tag_filter {
 #define PGP_SIGNATURE "-----BEGIN PGP SIGNATURE-----"
 
 static int show_reference(const char *refname, const unsigned char *sha1,
-			  int flag, void *cb_data)
+			  int flag, const char *symref, void *cb_data)
 {
 	struct tag_filter *filter = cb_data;
 
diff --git a/http-backend.c b/http-backend.c
index 345c12b..bd14606 100644
--- a/http-backend.c
+++ b/http-backend.c
@@ -419,7 +419,7 @@ static void run_service(const char **argv)
 }
 
 static int show_text_ref(const char *name, const unsigned char *sha1,
-	int flag, void *cb_data)
+	int flag, const char *symref, void *cb_data)
 {
 	struct strbuf *buf = cb_data;
 	struct object *o = parse_object(sha1);
diff --git a/log-tree.c b/log-tree.c
index 27afcf6..58a4ee8 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -20,7 +20,7 @@ static void add_name_decoration(const char *prefix, const char *name, struct obj
 	res->next = add_decoration(&name_decoration, obj, res);
 }
 
-static int add_ref_decoration(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
+static int add_ref_decoration(const char *refname, const unsigned char *sha1, int flags, const char *symref, void *cb_data)
 {
 	struct object *obj = parse_object(sha1);
 	if (!obj)
diff --git a/pack-refs.c b/pack-refs.c
index 7f43f8a..f1f3e73 100644
--- a/pack-refs.c
+++ b/pack-refs.c
@@ -24,7 +24,7 @@ static int do_not_prune(int flags)
 }
 
 static int handle_one_ref(const char *path, const unsigned char *sha1,
-			  int flags, void *cb_data)
+			  int flags, const char *symref, void *cb_data)
 {
 	struct pack_refs_cb_data *cb = cb_data;
 	int is_tag_ref;
diff --git a/reachable.c b/reachable.c
index b515fa2..2a07135 100644
--- a/reachable.c
+++ b/reachable.c
@@ -133,7 +133,7 @@ static int add_one_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
 	return 0;
 }
 
-static int add_one_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int add_one_ref(const char *path, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	struct object *object = parse_object(sha1);
 	struct rev_info *revs = (struct rev_info *)cb_data;
@@ -145,7 +145,7 @@ static int add_one_ref(const char *path, const unsigned char *sha1, int flag, vo
 	return 0;
 }
 
-static int add_one_reflog(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int add_one_reflog(const char *path, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	for_each_reflog_ent(path, add_one_reflog_ent, cb_data);
 	return 0;
diff --git a/refs.c b/refs.c
index 503a8c2..986c8e2 100644
--- a/refs.c
+++ b/refs.c
@@ -10,6 +10,7 @@
 struct ref_list {
 	struct ref_list *next;
 	unsigned char flag; /* ISSYMREF? ISPACKED? */
+	char *symref;
 	unsigned char sha1[20];
 	unsigned char peeled[20];
 	char name[FLEX_ARRAY];
@@ -44,7 +45,8 @@ static const char *parse_ref_line(char *line, unsigned char *sha1)
 }
 
 static struct ref_list *add_ref(const char *name, const unsigned char *sha1,
-				int flag, struct ref_list *list,
+				int flag, const char *real_ref,
+				struct ref_list *list,
 				struct ref_list **new_entry)
 {
 	int len;
@@ -57,6 +59,7 @@ static struct ref_list *add_ref(const char *name, const unsigned char *sha1,
 	hashclr(entry->peeled);
 	memcpy(entry->name, name, len);
 	entry->flag = flag;
+	entry->symref = (flag & REF_ISSYMREF) ? xstrdup(real_ref) : NULL;
 	entry->next = list;
 	if (new_entry)
 		*new_entry = entry;
@@ -204,7 +207,7 @@ static void read_packed_refs(FILE *f, struct cached_refs *cached_refs)
 
 		name = parse_ref_line(refline, sha1);
 		if (name) {
-			list = add_ref(name, sha1, flag, list, &last);
+			list = add_ref(name, sha1, flag, NULL, list, &last);
 			continue;
 		}
 		if (last &&
@@ -219,7 +222,7 @@ static void read_packed_refs(FILE *f, struct cached_refs *cached_refs)
 
 void add_extra_ref(const char *name, const unsigned char *sha1, int flag)
 {
-	extra_refs = add_ref(name, sha1, flag, extra_refs, NULL);
+	extra_refs = add_ref(name, sha1, flag, NULL, extra_refs, NULL);
 }
 
 void clear_extra_refs(void)
@@ -260,6 +263,7 @@ static struct ref_list *get_ref_dir(const char *base, struct ref_list *list)
 			struct stat st;
 			int flag;
 			int namelen;
+			const char *real_ref;
 
 			if (de->d_name[0] == '.')
 				continue;
@@ -275,9 +279,10 @@ static struct ref_list *get_ref_dir(const char *base, struct ref_list *list)
 				list = get_ref_dir(ref, list);
 				continue;
 			}
-			if (!resolve_ref(ref, sha1, 1, &flag))
+			real_ref = resolve_ref(ref, sha1, 1, &flag);
+			if (!real_ref)
 				hashclr(sha1);
-			list = add_ref(ref, sha1, flag, list, NULL);
+			list = add_ref(ref, sha1, flag, real_ref, list, NULL);
 		}
 		free(ref);
 		closedir(dir);
@@ -292,7 +297,7 @@ struct warn_if_dangling_data {
 };
 
 static int warn_if_dangling_symref(const char *refname, const unsigned char *sha1,
-				   int flags, void *cb_data)
+				   int flags, const char *symref, void *cb_data)
 {
 	struct warn_if_dangling_data *d = cb_data;
 	const char *resolves_to;
@@ -549,16 +554,17 @@ static int do_one_ref(const char *base, each_ref_fn fn, int trim,
 		}
 	}
 	current_ref = entry;
-	return fn(entry->name + trim, entry->sha1, entry->flag, cb_data);
+	return fn(entry->name + trim, entry->sha1, entry->flag, entry->symref,
+			cb_data);
 }
 
 static int filter_refs(const char *ref, const unsigned char *sha, int flags,
-	void *data)
+		const char *symref, void *data)
 {
 	struct ref_filter *filter = (struct ref_filter *)data;
 	if (fnmatch(filter->pattern, ref, 0))
 		return 0;
-	return filter->fn(ref, sha, flags, filter->cb_data);
+	return filter->fn(ref, sha, flags, symref, filter->cb_data);
 }
 
 int peel_ref(const char *ref, unsigned char *sha1)
@@ -654,9 +660,11 @@ int head_ref(each_ref_fn fn, void *cb_data)
 {
 	unsigned char sha1[20];
 	int flag;
+	const char *real_ref;
 
-	if (resolve_ref("HEAD", sha1, 1, &flag))
-		return fn("HEAD", sha1, flag, cb_data);
+	real_ref = resolve_ref("HEAD", sha1, 1, &flag);
+	if (real_ref)
+		return fn("HEAD", sha1, flag, real_ref, cb_data);
 	return 0;
 }
 
@@ -1666,7 +1674,7 @@ static int do_for_each_reflog(const char *base, each_ref_fn fn, void *cb_data)
 				if (!resolve_ref(log, sha1, 0, NULL))
 					retval = error("bad ref for %s", log);
 				else
-					retval = fn(log, sha1, 0, cb_data);
+					retval = fn(log, sha1, 0, NULL, cb_data);
 			}
 			if (retval)
 				break;
diff --git a/refs.h b/refs.h
index f7648b9..300ffb3 100644
--- a/refs.h
+++ b/refs.h
@@ -17,7 +17,7 @@ struct ref_lock {
  * Calls the specified function for each ref file until it returns nonzero,
  * and returns the value
  */
-typedef int each_ref_fn(const char *refname, const unsigned char *sha1, int flags, void *cb_data);
+typedef int each_ref_fn(const char *refname, const unsigned char *sha1, int flags, const char *symref, void *cb_data);
 extern int head_ref(each_ref_fn, void *);
 extern int for_each_ref(each_ref_fn, void *);
 extern int for_each_ref_in(const char *, each_ref_fn, void *);
diff --git a/remote.c b/remote.c
index c70181c..b78805a 100644
--- a/remote.c
+++ b/remote.c
@@ -1612,7 +1612,7 @@ int format_tracking_info(struct branch *branch, struct strbuf *sb)
 	return 1;
 }
 
-static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	struct ref ***local_tail = cb_data;
 	struct ref *ref;
@@ -1684,7 +1684,7 @@ struct stale_heads_info {
 };
 
 static int get_stale_heads_cb(const char *refname,
-	const unsigned char *sha1, int flags, void *cb_data)
+	const unsigned char *sha1, int flags, const char *symref, void *cb_data)
 {
 	struct stale_heads_info *info = cb_data;
 	struct refspec refspec;
diff --git a/replace_object.c b/replace_object.c
index eb59604..1dd6965 100644
--- a/replace_object.c
+++ b/replace_object.c
@@ -52,7 +52,8 @@ static int register_replace_object(struct replace_object *replace,
 
 static int register_replace_ref(const char *refname,
 				const unsigned char *sha1,
-				int flag, void *cb_data)
+				int flag, const char *symref,
+				void *cb_data)
 {
 	/* Get sha1 from refname */
 	const char *slash = strrchr(refname, '/');
diff --git a/revision.c b/revision.c
index 3ba6d99..65cec90 100644
--- a/revision.c
+++ b/revision.c
@@ -701,7 +701,7 @@ struct all_refs_cb {
 	const char *name_for_errormsg;
 };
 
-static int handle_one_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int handle_one_ref(const char *path, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	struct all_refs_cb *cb = cb_data;
 	struct object *object = get_reference(cb->all_revs, path, sha1,
@@ -751,7 +751,7 @@ static int handle_one_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
 	return 0;
 }
 
-static int handle_one_reflog(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int handle_one_reflog(const char *path, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	struct all_refs_cb *cb = cb_data;
 	cb->warned_bad_reflog = 0;
diff --git a/server-info.c b/server-info.c
index 4098ca2..f617f3f 100644
--- a/server-info.c
+++ b/server-info.c
@@ -7,7 +7,7 @@
 /* refs */
 static FILE *info_ref_fp;
 
-static int add_info_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int add_info_ref(const char *path, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	struct object *o = parse_object(sha1);
 	if (!o)
diff --git a/sha1_name.c b/sha1_name.c
index 7729925..aba8bf3 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -661,7 +661,8 @@ static int get_sha1_1(const char *name, int len, unsigned char *sha1)
 }
 
 static int handle_one_ref(const char *path,
-		const unsigned char *sha1, int flag, void *cb_data)
+		const unsigned char *sha1, int flag, const char *symref,
+		void *cb_data)
 {
 	struct commit_list **list = cb_data;
 	struct object *object = parse_object(sha1);
diff --git a/transport.c b/transport.c
index 3846aac..039ccef 100644
--- a/transport.c
+++ b/transport.c
@@ -283,7 +283,7 @@ static int fetch_objs_via_rsync(struct transport *transport,
 }
 
 static int write_one_ref(const char *name, const unsigned char *sha1,
-		int flags, void *data)
+		int flags, const char *symref, void *data)
 {
 	struct strbuf *buf = data;
 	int len = buf->len;
@@ -316,7 +316,7 @@ static int write_refs_to_temp_dir(struct strbuf *temp_dir,
 		if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
 			return error("Could not get ref %s", refspec[i]);
 
-		if (write_one_ref(ref, sha1, 0, temp_dir)) {
+		if (write_one_ref(ref, sha1, 0, NULL, temp_dir)) {
 			free(ref);
 			return -1;
 		}
diff --git a/upload-pack.c b/upload-pack.c
index df15181..8f3c730 100644
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -618,7 +618,7 @@ static void receive_needs(void)
 	free(shallows.objects);
 }
 
-static int send_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int send_ref(const char *refname, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	static const char *capabilities = "multi_ack thin-pack side-band"
 		" side-band-64k ofs-delta shallow no-progress"
@@ -646,7 +646,7 @@ static int send_ref(const char *refname, const unsigned char *sha1, int flag, vo
 	return 0;
 }
 
-static int mark_our_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int mark_our_ref(const char *refname, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	struct object *o = parse_object(sha1);
 	if (!o)
diff --git a/walker.c b/walker.c
index 11d9052..0b2aaf6 100644
--- a/walker.c
+++ b/walker.c
@@ -202,7 +202,7 @@ static int interpret_target(struct walker *walker, char *target, unsigned char *
 	return -1;
 }
 
-static int mark_complete(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int mark_complete(const char *path, const unsigned char *sha1, int flag, const char *symref, void *cb_data)
 {
 	struct commit *commit = lookup_commit_reference_gently(sha1, 1);
 	if (commit) {

Re: [PATCH 3/4] for-each-ref --format='%(symref) %(symref:short)'

[Junio C Hamano]

Jeff King <peff@peff.net> writes:

> It feels ugly that we need to re-resolve the ref when we simply threw
> that information away earlier from when we called resolve_ref in
> get_ref_dir...

It is true and I indeed thought about it while doing the patch, but "how
often would we see symref in the entire refs list, and what percentage of
callers would benefit from seeing this information?" stopped me from going
further in that direction.

> ...
> If we were going to do this for real, I would be tempted to actually
> change the signature of each_ref_fn to take a struct so this doesn't
> come up again.

That would actually be sensible.  Adding symref parameter all over just so
that we do not have to re-resolve symbolic refs in a few codepaths feels
like a "it would have been nicer if things were that way from day one, but
how much does that churn really buys us now" kind of change, but carrying
the full information around in the internal API is a "right thing to do".

Re: [PATCH 3/4] for-each-ref --format='%(symref) %(symref:short)'

[Jeff King]

On Sun, Feb 14, 2010 at 02:32:29AM -0800, Junio C Hamano wrote:

> Jeff King <peff@peff.net> writes:
> 
> > It feels ugly that we need to re-resolve the ref when we simply threw
> > that information away earlier from when we called resolve_ref in
> > get_ref_dir...
> 
> It is true and I indeed thought about it while doing the patch, but "how
> often would we see symref in the entire refs list, and what percentage of
> callers would benefit from seeing this information?" stopped me from going
> further in that direction.

It is really only two code-paths (the one I mentioned, and the new one
you are adding). I was thinking that we had to pay the resolve_ref cost
for _every_ ref, symref or not, but that is not the case. Because we
pass along the flag, we can re-resolve only the few that need it.

So there is even less efficiency to be gained than I at first thought.
Let's just drop it, as it is such an invasive change for no good reason.

-Peff

[PATCH 4/4] for-each-ref --format='%(flag)'

[Junio C Hamano]

This expands to "symref" or "packed" or an empty string, exposing the
internal "flag" the for_each_ref() callback functions are called with.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 builtin-for-each-ref.c |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)

diff --git a/builtin-for-each-ref.c b/builtin-for-each-ref.c
index b9b03e1..62be1bb 100644
--- a/builtin-for-each-ref.c
+++ b/builtin-for-each-ref.c
@@ -71,6 +71,7 @@ static struct {
 	{ "contents" },
 	{ "upstream" },
 	{ "symref" },
+	{ "flag" },
 };
 
 /*
@@ -558,6 +559,13 @@ static void grab_values(struct atom_value *val, int deref, struct object *obj, v
 	}
 }
 
+static inline char *copy_advance(char *dst, const char *src)
+{
+	while (*src)
+		*dst++ = *src++;
+	return dst;
+}
+
 /*
  * Parse the object referred by ref, and grab needed value.
  */
@@ -610,6 +618,20 @@ static void populate_value(struct refinfo *ref)
 				continue;
 			refname = branch->merge[0]->dst;
 		}
+		else if (!strcmp(name, "flag")) {
+			char buf[256], *cp = buf;
+			if (ref->flag & REF_ISSYMREF)
+				cp = copy_advance(cp, ",symref");
+			if (ref->flag & REF_ISPACKED)
+				cp = copy_advance(cp, ",packed");
+			if (cp == buf)
+				v->s = "";
+			else {
+				*cp = '\0';
+				v->s = xstrdup(buf + 1);
+			}
+			continue;
+		}
 		else
 			continue;
 
-- 
1.7.0.169.g57c99