Merge branch 'maint'

* maint:
  SunOS grep does not understand -C<n> nor -e
  Fix export_marks() error handling.
  git branch: clean up detached branch handling
  git branch: avoid unnecessary object lookups
  git branch: fix performance problem
  do_one_ref(): null_sha1 check is not about broken ref

Conflicts:
	Makefile

4 files changed, 53 insertions, 33 deletions

diff --git a/Makefile b/Makefile
index bde27ed478..daf4296706 100644
--- a/Makefile
+++ b/Makefile
@@ -728,6 +728,7 @@ ifeq ($(uname_S),SunOS)
 	NO_MKDTEMP = YesPlease
 	NO_MKSTEMPS = YesPlease
 	NO_REGEX = YesPlease
+	NO_EXTERNAL_GREP = YesPlease
 	ifeq ($(uname_R),5.7)
 		NEEDS_RESOLV = YesPlease
 		NO_IPV6 = YesPlease
diff --git a/builtin-branch.c b/builtin-branch.c
index 5687d6042c..1a03d5f356 100644
--- a/builtin-branch.c
+++ b/builtin-branch.c
@@ -191,7 +191,7 @@ struct ref_item {
 
 struct ref_list {
 	struct rev_info revs;
-	int index, alloc, maxwidth;
+	int index, alloc, maxwidth, verbose, abbrev;
 	struct ref_item *list;
 	struct commit_list *with_commit;
 	int kinds;
@@ -240,21 +240,24 @@ static int append_ref(const char *refname, const unsigned char *sha1, int flags,
 	if (ARRAY_SIZE(ref_kind) <= i)
 		return 0;
 
-	commit = lookup_commit_reference_gently(sha1, 1);
-	if (!commit)
-		return error("branch '%s' does not point at a commit", refname);
-
-	/* Filter with with_commit if specified */
-	if (!is_descendant_of(commit, ref_list->with_commit))
-		return 0;
-
 	/* Don't add types the caller doesn't want */
 	if ((kind & ref_list->kinds) == 0)
 		return 0;
 
-	if (merge_filter != NO_FILTER)
-		add_pending_object(&ref_list->revs,
-				   (struct object *)commit, refname);
+	commit = NULL;
+	if (ref_list->verbose || ref_list->with_commit || merge_filter != NO_FILTER) {
+		commit = lookup_commit_reference_gently(sha1, 1);
+		if (!commit)
+			return error("branch '%s' does not point at a commit", refname);
+
+		/* Filter with with_commit if specified */
+		if (!is_descendant_of(commit, ref_list->with_commit))
+			return 0;
+
+		if (merge_filter != NO_FILTER)
+			add_pending_object(&ref_list->revs,
+					   (struct object *)commit, refname);
+	}
 
 	/* Resize buffer */
 	if (ref_list->index >= ref_list->alloc) {
@@ -415,18 +418,38 @@ static int calc_maxwidth(struct ref_list *refs)
 	return w;
 }
 
+
+static void show_detached(struct ref_list *ref_list)
+{
+	struct commit *head_commit = lookup_commit_reference_gently(head_sha1, 1);
+
+	if (head_commit && is_descendant_of(head_commit, ref_list->with_commit)) {
+		struct ref_item item;
+		item.name = xstrdup("(no branch)");
+		item.len = strlen(item.name);
+		item.kind = REF_LOCAL_BRANCH;
+		item.dest = NULL;
+		item.commit = head_commit;
+		if (item.len > ref_list->maxwidth)
+			ref_list->maxwidth = item.len;
+		print_ref_item(&item, ref_list->maxwidth, ref_list->verbose, ref_list->abbrev, 1, "");
+		free(item.name);
+	}
+}
+
 static void print_ref_list(int kinds, int detached, int verbose, int abbrev, struct commit_list *with_commit)
 {
 	int i;
 	struct ref_list ref_list;
-	struct commit *head_commit = lookup_commit_reference_gently(head_sha1, 1);
 
 	memset(&ref_list, 0, sizeof(ref_list));
 	ref_list.kinds = kinds;
+	ref_list.verbose = verbose;
+	ref_list.abbrev = abbrev;
 	ref_list.with_commit = with_commit;
 	if (merge_filter != NO_FILTER)
 		init_revisions(&ref_list.revs, NULL);
-	for_each_ref(append_ref, &ref_list);
+	for_each_rawref(append_ref, &ref_list);
 	if (merge_filter != NO_FILTER) {
 		struct commit *filter;
 		filter = lookup_commit_reference_gently(merge_filter_ref, 0);
@@ -442,19 +465,8 @@ static void print_ref_list(int kinds, int detached, int verbose, int abbrev, str
 	qsort(ref_list.list, ref_list.index, sizeof(struct ref_item), ref_cmp);
 
 	detached = (detached && (kinds & REF_LOCAL_BRANCH));
-	if (detached && head_commit &&
-	    is_descendant_of(head_commit, with_commit)) {
-		struct ref_item item;
-		item.name = xstrdup("(no branch)");
-		item.len = strlen(item.name);
-		item.kind = REF_LOCAL_BRANCH;
-		item.dest = NULL;
-		item.commit = head_commit;
-		if (item.len > ref_list.maxwidth)
-			ref_list.maxwidth = item.len;
-		print_ref_item(&item, ref_list.maxwidth, verbose, abbrev, 1, "");
-		free(item.name);
-	}
+	if (detached)
+		show_detached(&ref_list);
 
 	for (i = 0; i < ref_list.index; i++) {
 		int current = !detached &&
diff --git a/builtin-fast-export.c b/builtin-fast-export.c
index 9a8a6fc6b1..ca198250c3 100644
--- a/builtin-fast-export.c
+++ b/builtin-fast-export.c
@@ -428,21 +428,27 @@ static void export_marks(char *file)
 	uint32_t mark;
 	struct object_decoration *deco = idnums.hash;
 	FILE *f;
+	int e = 0;
 
 	f = fopen(file, "w");
 	if (!f)
-		error("Unable to open marks file %s for writing", file);
+		error("Unable to open marks file %s for writing.", file);
 
 	for (i = 0; i < idnums.size; i++) {
 		if (deco->base && deco->base->type == 1) {
 			mark = ptr_to_mark(deco->decoration);
-			fprintf(f, ":%"PRIu32" %s\n", mark,
-				sha1_to_hex(deco->base->sha1));
+			if (fprintf(f, ":%"PRIu32" %s\n", mark,
+				sha1_to_hex(deco->base->sha1)) < 0) {
+			    e = 1;
+			    break;
+			}
 		}
 		deco++;
 	}
 
-	if (ferror(f) || fclose(f))
+	e |= ferror(f);
+	e |= fclose(f);
+	if (e)
 		error("Unable to write marks file %s.", file);
 }
 
diff --git a/refs.c b/refs.c
index e15880fbc8..e49eaa3089 100644
--- a/refs.c
+++ b/refs.c
@@ -531,9 +531,10 @@ static int do_one_ref(const char *base, each_ref_fn fn, int trim,
 {
 	if (strncmp(base, entry->name, trim))
 		return 0;
+	/* Is this a "negative ref" that represents a deleted ref? */
+	if (is_null_sha1(entry->sha1))
+		return 0;
 	if (!(flags & DO_FOR_EACH_INCLUDE_BROKEN)) {
-		if (is_null_sha1(entry->sha1))
-			return 0;
 		if (!has_sha1_file(entry->sha1)) {
 			error("%s does not point to a valid object!", entry->name);
 			return 0;