Merge branch 'bw/ref-prefix-for-configured-refspec'

"git fetch $there $refspec" that talks over protocol v2 can take
advantage of server-side ref filtering; the code has been extended
so that this mechanism triggers also when fetching with configured
refspec.

* bw/ref-prefix-for-configured-refspec: (38 commits)
  fetch: generate ref-prefixes when using a configured refspec
  refspec: consolidate ref-prefix generation logic
  submodule: convert push_unpushed_submodules to take a struct refspec
  remote: convert check_push_refs to take a struct refspec
  remote: convert match_push_refs to take a struct refspec
  http-push: store refspecs in a struct refspec
  transport: remove transport_verify_remote_names
  send-pack: store refspecs in a struct refspec
  transport: convert transport_push to take a struct refspec
  push: convert to use struct refspec
  push: check for errors earlier
  remote: convert match_explicit_refs to take a struct refspec
  remote: convert get_ref_match to take a struct refspec
  remote: convert query_refspecs to take a struct refspec
  remote: convert apply_refspecs to take a struct refspec
  remote: convert get_stale_heads to take a struct refspec
  fetch: convert prune_refs to take a struct refspec
  fetch: convert get_ref_map to take a struct refspec
  fetch: convert do_fetch to take a struct refspec
  refspec: remove the deprecated functions
  ...

9 files changed, 147 insertions, 192 deletions

diff --git a/builtin/clone.c b/builtin/clone.c
index ecd8495dab..99e73dae85 100644
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -14,6 +14,7 @@
 #include "parse-options.h"
 #include "fetch-pack.h"
 #include "refs.h"
+#include "refspec.h"
 #include "tree.h"
 #include "tree-walk.h"
 #include "unpack-trees.h"
@@ -546,7 +547,7 @@ static struct ref *find_remote_branch(const struct ref *refs, const char *branch
 }
 
 static struct ref *wanted_peer_refs(const struct ref *refs,
-		struct refspec *refspec)
+		struct refspec_item *refspec)
 {
 	struct ref *head = copy_ref(find_ref_by_name(refs, "HEAD"));
 	struct ref *local_refs = head;
@@ -894,8 +895,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 	int err = 0, complete_refs_before_fetch = 1;
 	int submodule_progress;
 
-	struct refspec *refspec;
-	const char *fetch_pattern;
+	struct refspec_item refspec;
 
 	fetch_if_missing = 0;
 
@@ -1077,8 +1077,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 	if (option_required_reference.nr || option_optional_reference.nr)
 		setup_reference();
 
-	fetch_pattern = value.buf;
-	refspec = parse_fetch_refspec(1, &fetch_pattern);
+	refspec_item_init(&refspec, value.buf, REFSPEC_FETCH);
 
 	strbuf_reset(&value);
 
@@ -1138,7 +1137,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 	refs = transport_get_remote_refs(transport, NULL);
 
 	if (refs) {
-		mapped_refs = wanted_peer_refs(refs, refspec);
+		mapped_refs = wanted_peer_refs(refs, &refspec);
 		/*
 		 * transport_get_remote_refs() may return refs with null sha-1
 		 * in mapped_refs (see struct transport->get_refs_list
@@ -1232,6 +1231,6 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 	strbuf_release(&value);
 	junk_mode = JUNK_LEAVE_ALL;
 
-	free(refspec);
+	refspec_item_clear(&refspec);
 	return err;
 }
diff --git a/builtin/fast-export.c b/builtin/fast-export.c
index f9568ddba0..6c9768742f 100644
--- a/builtin/fast-export.c
+++ b/builtin/fast-export.c
@@ -7,6 +7,7 @@
 #include "cache.h"
 #include "config.h"
 #include "refs.h"
+#include "refspec.h"
 #include "commit.h"
 #include "object.h"
 #include "tag.h"
@@ -35,8 +36,7 @@ static int use_done_feature;
 static int no_data;
 static int full_tree;
 static struct string_list extra_refs = STRING_LIST_INIT_NODUP;
-static struct refspec *refspecs;
-static int refspecs_nr;
+static struct refspec refspecs = REFSPEC_INIT_FETCH;
 static int anonymize;
 
 static int parse_opt_signed_tag_mode(const struct option *opt,
@@ -828,9 +828,9 @@ static void get_tags_and_duplicates(struct rev_cmdline_info *info)
 		if (dwim_ref(e->name, strlen(e->name), &oid, &full_name) != 1)
 			continue;
 
-		if (refspecs) {
+		if (refspecs.nr) {
 			char *private;
-			private = apply_refspecs(refspecs, refspecs_nr, full_name);
+			private = apply_refspecs(&refspecs, full_name);
 			if (private) {
 				free(full_name);
 				full_name = private;
@@ -976,8 +976,8 @@ static void import_marks(char *input_file)
 static void handle_deletes(void)
 {
 	int i;
-	for (i = 0; i < refspecs_nr; i++) {
-		struct refspec *refspec = &refspecs[i];
+	for (i = 0; i < refspecs.nr; i++) {
+		struct refspec_item *refspec = &refspecs.items[i];
 		if (*refspec->src)
 			continue;
 
@@ -1038,18 +1038,12 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
 		usage_with_options (fast_export_usage, options);
 
 	if (refspecs_list.nr) {
-		const char **refspecs_str;
 		int i;
 
-		ALLOC_ARRAY(refspecs_str, refspecs_list.nr);
 		for (i = 0; i < refspecs_list.nr; i++)
-			refspecs_str[i] = refspecs_list.items[i].string;
-
-		refspecs_nr = refspecs_list.nr;
-		refspecs = parse_fetch_refspec(refspecs_nr, refspecs_str);
+			refspec_append(&refspecs, refspecs_list.items[i].string);
 
 		string_list_clear(&refspecs_list, 1);
-		free(refspecs_str);
 	}
 
 	if (use_done_feature)
@@ -1088,7 +1082,7 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
 	if (use_done_feature)
 		printf("done\n");
 
-	free_refspec(refspecs_nr, refspecs);
+	refspec_clear(&refspecs);
 
 	return 0;
 }
diff --git a/builtin/fetch.c b/builtin/fetch.c
index 1f037e8e4b..c0d8ad1fe2 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -5,6 +5,7 @@
 #include "config.h"
 #include "repository.h"
 #include "refs.h"
+#include "refspec.h"
 #include "commit.h"
 #include "builtin.h"
 #include "string-list.h"
@@ -59,8 +60,7 @@ static const char *submodule_prefix = "";
 static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
 static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
 static int shown_url = 0;
-static int refmap_alloc, refmap_nr;
-static const char **refmap_array;
+static struct refspec refmap = REFSPEC_INIT_FETCH;
 static struct list_objects_filter_options filter_options;
 static struct string_list server_options = STRING_LIST_INIT_DUP;
 
@@ -108,14 +108,12 @@ static int gitmodules_fetch_config(const char *var, const char *value, void *cb)
 
 static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
 {
-	ALLOC_GROW(refmap_array, refmap_nr + 1, refmap_alloc);
-
 	/*
 	 * "git fetch --refmap='' origin foo"
 	 * can be used to tell the command not to store anywhere
 	 */
-	if (*arg)
-		refmap_array[refmap_nr++] = arg;
+	refspec_append(&refmap, arg);
+
 	return 0;
 }
 
@@ -204,7 +202,7 @@ static void add_merge_config(struct ref **head,
 
 	for (i = 0; i < branch->merge_nr; i++) {
 		struct ref *rm, **old_tail = *tail;
-		struct refspec refspec;
+		struct refspec_item refspec;
 
 		for (rm = *head; rm; rm = rm->next) {
 			if (branch_merge_matches(branch, i, rm->name)) {
@@ -341,7 +339,7 @@ static void find_non_local_tags(struct transport *transport,
 }
 
 static struct ref *get_ref_map(struct transport *transport,
-			       struct refspec *refspecs, int refspec_count,
+			       struct refspec *rs,
 			       int tags, int *autotags)
 {
 	int i;
@@ -355,29 +353,26 @@ static struct ref *get_ref_map(struct transport *transport,
 
 	const struct ref *remote_refs;
 
-	for (i = 0; i < refspec_count; i++) {
-		if (!refspecs[i].exact_sha1) {
-			const char *glob = strchr(refspecs[i].src, '*');
-			if (glob)
-				argv_array_pushf(&ref_prefixes, "%.*s",
-						 (int)(glob - refspecs[i].src),
-						 refspecs[i].src);
-			else
-				expand_ref_prefix(&ref_prefixes, refspecs[i].src);
-		}
+	if (rs->nr)
+		refspec_ref_prefixes(rs, &ref_prefixes);
+	else if (transport->remote && transport->remote->fetch.nr)
+		refspec_ref_prefixes(&transport->remote->fetch, &ref_prefixes);
+
+	if (ref_prefixes.argc &&
+	    (tags == TAGS_SET || (tags == TAGS_DEFAULT && !rs->nr))) {
+		argv_array_push(&ref_prefixes, "refs/tags/");
 	}
 
 	remote_refs = transport_get_remote_refs(transport, &ref_prefixes);
 
 	argv_array_clear(&ref_prefixes);
 
-	if (refspec_count) {
+	if (rs->nr) {
 		struct refspec *fetch_refspec;
-		int fetch_refspec_nr;
 
-		for (i = 0; i < refspec_count; i++) {
-			get_fetch_map(remote_refs, &refspecs[i], &tail, 0);
-			if (refspecs[i].dst && refspecs[i].dst[0])
+		for (i = 0; i < rs->nr; i++) {
+			get_fetch_map(remote_refs, &rs->items[i], &tail, 0);
+			if (rs->items[i].dst && rs->items[i].dst[0])
 				*autotags = 1;
 		}
 		/* Merge everything on the command line (but not --tags) */
@@ -404,17 +399,14 @@ static struct ref *get_ref_map(struct transport *transport,
 		 * by ref_remove_duplicates() in favor of one of these
 		 * opportunistic entries with FETCH_HEAD_IGNORE.
 		 */
-		if (refmap_array) {
-			fetch_refspec = parse_fetch_refspec(refmap_nr, refmap_array);
-			fetch_refspec_nr = refmap_nr;
-		} else {
-			fetch_refspec = transport->remote->fetch;
-			fetch_refspec_nr = transport->remote->fetch_refspec_nr;
-		}
+		if (refmap.nr)
+			fetch_refspec = &refmap;
+		else
+			fetch_refspec = &transport->remote->fetch;
 
-		for (i = 0; i < fetch_refspec_nr; i++)
-			get_fetch_map(ref_map, &fetch_refspec[i], &oref_tail, 1);
-	} else if (refmap_array) {
+		for (i = 0; i < fetch_refspec->nr; i++)
+			get_fetch_map(ref_map, &fetch_refspec->items[i], &oref_tail, 1);
+	} else if (refmap.nr) {
 		die("--refmap option is only meaningful with command-line refspec(s).");
 	} else {
 		/* Use the defaults */
@@ -422,16 +414,16 @@ static struct ref *get_ref_map(struct transport *transport,
 		struct branch *branch = branch_get(NULL);
 		int has_merge = branch_has_merge_config(branch);
 		if (remote &&
-		    (remote->fetch_refspec_nr ||
+		    (remote->fetch.nr ||
 		     /* Note: has_merge implies non-NULL branch->remote_name */
 		     (has_merge && !strcmp(branch->remote_name, remote->name)))) {
-			for (i = 0; i < remote->fetch_refspec_nr; i++) {
-				get_fetch_map(remote_refs, &remote->fetch[i], &tail, 0);
-				if (remote->fetch[i].dst &&
-				    remote->fetch[i].dst[0])
+			for (i = 0; i < remote->fetch.nr; i++) {
+				get_fetch_map(remote_refs, &remote->fetch.items[i], &tail, 0);
+				if (remote->fetch.items[i].dst &&
+				    remote->fetch.items[i].dst[0])
 					*autotags = 1;
 				if (!i && !has_merge && ref_map &&
-				    !remote->fetch[0].pattern)
+				    !remote->fetch.items[0].pattern)
 					ref_map->fetch_head_status = FETCH_HEAD_MERGE;
 			}
 			/*
@@ -966,11 +958,11 @@ static int fetch_refs(struct transport *transport, struct ref *ref_map)
 	return ret;
 }
 
-static int prune_refs(struct refspec *refs, int ref_count, struct ref *ref_map,
-		const char *raw_url)
+static int prune_refs(struct refspec *rs, struct ref *ref_map,
+		      const char *raw_url)
 {
 	int url_len, i, result = 0;
-	struct ref *ref, *stale_refs = get_stale_heads(refs, ref_count, ref_map);
+	struct ref *ref, *stale_refs = get_stale_heads(rs, ref_map);
 	char *url;
 	int summary_width = transport_summary_width(stale_refs);
 	const char *dangling_msg = dry_run
@@ -1116,7 +1108,7 @@ static void backfill_tags(struct transport *transport, struct ref *ref_map)
 }
 
 static int do_fetch(struct transport *transport,
-		    struct refspec *refs, int ref_count)
+		    struct refspec *rs)
 {
 	struct string_list existing_refs = STRING_LIST_INIT_DUP;
 	struct ref *ref_map;
@@ -1140,7 +1132,7 @@ static int do_fetch(struct transport *transport,
 			goto cleanup;
 	}
 
-	ref_map = get_ref_map(transport, refs, ref_count, tags, &autotags);
+	ref_map = get_ref_map(transport, rs, tags, &autotags);
 	if (!update_head_ok)
 		check_not_current_branch(ref_map);
 
@@ -1164,11 +1156,10 @@ static int do_fetch(struct transport *transport,
 		 * explicitly (via command line or configuration); we
 		 * don't care whether --tags was specified.
 		 */
-		if (ref_count) {
-			prune_refs(refs, ref_count, ref_map, transport->url);
+		if (rs->nr) {
+			prune_refs(rs, ref_map, transport->url);
 		} else {
-			prune_refs(transport->remote->fetch,
-				   transport->remote->fetch_refspec_nr,
+			prune_refs(&transport->remote->fetch,
 				   ref_map,
 				   transport->url);
 		}
@@ -1357,10 +1348,8 @@ static inline void fetch_one_setup_partial(struct remote *remote)
 
 static int fetch_one(struct remote *remote, int argc, const char **argv, int prune_tags_ok)
 {
-	static const char **refs = NULL;
-	struct refspec *refspec;
-	int ref_nr = 0;
-	int j = 0;
+	struct refspec rs = REFSPEC_INIT_FETCH;
+	int i;
 	int exit_code;
 	int maybe_prune_tags;
 	int remote_via_config = remote_is_configured(remote, 0);
@@ -1393,29 +1382,24 @@ static int fetch_one(struct remote *remote, int argc, const char **argv, int pru
 
 	maybe_prune_tags = prune_tags_ok && prune_tags;
 	if (maybe_prune_tags && remote_via_config)
-		add_prune_tags_to_fetch_refspec(remote);
-
-	if (argc > 0 || (maybe_prune_tags && !remote_via_config)) {
-		size_t nr_alloc = st_add3(argc, maybe_prune_tags, 1);
-		refs = xcalloc(nr_alloc, sizeof(const char *));
-		if (maybe_prune_tags) {
-			refs[j++] = xstrdup("refs/tags/*:refs/tags/*");
-			ref_nr++;
-		}
-	}
-
-	if (argc > 0) {
-		int i;
-		for (i = 0; i < argc; i++) {
-			if (!strcmp(argv[i], "tag")) {
-				i++;
-				if (i >= argc)
-					die(_("You need to specify a tag name."));
-				refs[j++] = xstrfmt("refs/tags/%s:refs/tags/%s",
-						    argv[i], argv[i]);
-			} else
-				refs[j++] = argv[i];
-			ref_nr++;
+		refspec_append(&remote->fetch, TAG_REFSPEC);
+
+	if (maybe_prune_tags && (argc || !remote_via_config))
+		refspec_append(&rs, TAG_REFSPEC);
+
+	for (i = 0; i < argc; i++) {
+		if (!strcmp(argv[i], "tag")) {
+			char *tag;
+			i++;
+			if (i >= argc)
+				die(_("You need to specify a tag name."));
+
+			tag = xstrfmt("refs/tags/%s:refs/tags/%s",
+				      argv[i], argv[i]);
+			refspec_append(&rs, tag);
+			free(tag);
+		} else {
+			refspec_append(&rs, argv[i]);
 		}
 	}
 
@@ -1424,9 +1408,8 @@ static int fetch_one(struct remote *remote, int argc, const char **argv, int pru
 
 	sigchain_push_common(unlock_pack_on_signal);
 	atexit(unlock_pack);
-	refspec = parse_fetch_refspec(ref_nr, refs);
-	exit_code = do_fetch(gtransport, refspec, ref_nr);
-	free_refspec(ref_nr, refspec);
+	exit_code = do_fetch(gtransport, &rs);
+	refspec_clear(&rs);
 	transport_disconnect(gtransport);
 	gtransport = NULL;
 	return exit_code;
diff --git a/builtin/merge.c b/builtin/merge.c
index fba0a7fc79..d85f99b781 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -14,6 +14,7 @@
 #include "run-command.h"
 #include "diff.h"
 #include "refs.h"
+#include "refspec.h"
 #include "commit.h"
 #include "diffcore.h"
 #include "revision.h"
diff --git a/builtin/pull.c b/builtin/pull.c
index 25f7db5b3a..1f2ecf3a88 100644
--- a/builtin/pull.c
+++ b/builtin/pull.c
@@ -15,6 +15,7 @@
 #include "remote.h"
 #include "dir.h"
 #include "refs.h"
+#include "refspec.h"
 #include "revision.h"
 #include "submodule.h"
 #include "submodule-config.h"
@@ -679,12 +680,12 @@ static const char *get_upstream_branch(const char *remote)
  */
 static const char *get_tracking_branch(const char *remote, const char *refspec)
 {
-	struct refspec *spec;
+	struct refspec_item spec;
 	const char *spec_src;
 	const char *merge_branch;
 
-	spec = parse_fetch_refspec(1, &refspec);
-	spec_src = spec->src;
+	refspec_item_init(&spec, refspec, REFSPEC_FETCH);
+	spec_src = spec.src;
 	if (!*spec_src || !strcmp(spec_src, "HEAD"))
 		spec_src = "HEAD";
 	else if (skip_prefix(spec_src, "heads/", &spec_src))
@@ -704,7 +705,7 @@ static const char *get_tracking_branch(const char *remote, const char *refspec)
 	} else
 		merge_branch = NULL;
 
-	free_refspec(1, spec);
+	refspec_item_clear(&spec);
 	return merge_branch;
 }
 
diff --git a/builtin/push.c b/builtin/push.c
index ac3705370e..9cd8e8cd56 100644
--- a/builtin/push.c
+++ b/builtin/push.c
@@ -4,6 +4,7 @@
 #include "cache.h"
 #include "config.h"
 #include "refs.h"
+#include "refspec.h"
 #include "run-command.h"
 #include "builtin.h"
 #include "remote.h"
@@ -56,19 +57,10 @@ static enum transport_family family;
 
 static struct push_cas_option cas;
 
-static const char **refspec;
-static int refspec_nr;
-static int refspec_alloc;
+static struct refspec rs = REFSPEC_INIT_PUSH;
 
 static struct string_list push_options_config = STRING_LIST_INIT_DUP;
 
-static void add_refspec(const char *ref)
-{
-	refspec_nr++;
-	ALLOC_GROW(refspec, refspec_nr, refspec_alloc);
-	refspec[refspec_nr-1] = ref;
-}
-
 static const char *map_refspec(const char *ref,
 			       struct remote *remote, struct ref *local_refs)
 {
@@ -78,12 +70,11 @@ static const char *map_refspec(const char *ref,
 	if (count_refspec_match(ref, local_refs, &matched) != 1)
 		return ref;
 
-	if (remote->push) {
-		struct refspec query;
-		memset(&query, 0, sizeof(struct refspec));
+	if (remote->push.nr) {
+		struct refspec_item query;
+		memset(&query, 0, sizeof(struct refspec_item));
 		query.src = matched->name;
-		if (!query_refspecs(remote->push, remote->push_refspec_nr, &query) &&
-		    query.dst) {
+		if (!query_refspecs(&remote->push, &query) && query.dst) {
 			struct strbuf buf = STRBUF_INIT;
 			strbuf_addf(&buf, "%s%s:%s",
 				    query.force ? "+" : "",
@@ -138,7 +129,7 @@ static void set_refspecs(const char **refs, int nr, const char *repo)
 			}
 			ref = map_refspec(ref, remote, local_refs);
 		}
-		add_refspec(ref);
+		refspec_append(&rs, ref);
 	}
 }
 
@@ -226,7 +217,7 @@ static void setup_push_upstream(struct remote *remote, struct branch *branch,
 	}
 
 	strbuf_addf(&refspec, "%s:%s", branch->refname, branch->merge[0]->src);
-	add_refspec(refspec.buf);
+	refspec_append(&rs, refspec.buf);
 }
 
 static void setup_push_current(struct remote *remote, struct branch *branch)
@@ -236,7 +227,7 @@ static void setup_push_current(struct remote *remote, struct branch *branch)
 	if (!branch)
 		die(_(message_detached_head_die), remote->name);
 	strbuf_addf(&refspec, "%s:%s", branch->refname, branch->refname);
-	add_refspec(refspec.buf);
+	refspec_append(&rs, refspec.buf);
 }
 
 static int is_workflow_triangular(struct remote *remote)
@@ -253,7 +244,7 @@ static void setup_default_push_refspecs(struct remote *remote)
 	switch (push_default) {
 	default:
 	case PUSH_DEFAULT_MATCHING:
-		add_refspec(":");
+		refspec_append(&rs, ":");
 		break;
 
 	case PUSH_DEFAULT_UNSPECIFIED:
@@ -341,7 +332,8 @@ static void advise_ref_needs_force(void)
 	advise(_(message_advice_ref_needs_force));
 }
 
-static int push_with_options(struct transport *transport, int flags)
+static int push_with_options(struct transport *transport, struct refspec *rs,
+			     int flags)
 {
 	int err;
 	unsigned int reject_reasons;
@@ -363,8 +355,7 @@ static int push_with_options(struct transport *transport, int flags)
 
 	if (verbosity > 0)
 		fprintf(stderr, _("Pushing to %s\n"), transport->url);
-	err = transport_push(transport, refspec_nr, refspec, flags,
-			     &reject_reasons);
+	err = transport_push(transport, rs, flags, &reject_reasons);
 	if (err != 0) {
 		fprintf(stderr, "%s", push_get_color(PUSH_COLOR_ERROR));
 		error(_("failed to push some refs to '%s'"), transport->url);
@@ -397,6 +388,7 @@ static int do_push(const char *repo, int flags,
 	struct remote *remote = pushremote_get(repo);
 	const char **url;
 	int url_nr;
+	struct refspec *push_refspec = &rs;
 
 	if (!remote) {
 		if (repo)
@@ -417,27 +409,9 @@ static int do_push(const char *repo, int flags,
 	if (push_options->nr)
 		flags |= TRANSPORT_PUSH_OPTIONS;
 
-	if ((flags & TRANSPORT_PUSH_ALL) && refspec) {
-		if (!strcmp(*refspec, "refs/tags/*"))
-			return error(_("--all and --tags are incompatible"));
-		return error(_("--all can't be combined with refspecs"));
-	}
-
-	if ((flags & TRANSPORT_PUSH_MIRROR) && refspec) {
-		if (!strcmp(*refspec, "refs/tags/*"))
-			return error(_("--mirror and --tags are incompatible"));
-		return error(_("--mirror can't be combined with refspecs"));
-	}
-
-	if ((flags & (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) ==
-				(TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) {
-		return error(_("--all and --mirror are incompatible"));
-	}
-
-	if (!refspec && !(flags & TRANSPORT_PUSH_ALL)) {
-		if (remote->push_refspec_nr) {
-			refspec = remote->push_refspec;
-			refspec_nr = remote->push_refspec_nr;
+	if (!push_refspec->nr && !(flags & TRANSPORT_PUSH_ALL)) {
+		if (remote->push.nr) {
+			push_refspec = &remote->push;
 		} else if (!(flags & TRANSPORT_PUSH_MIRROR))
 			setup_default_push_refspecs(remote);
 	}
@@ -449,7 +423,7 @@ static int do_push(const char *repo, int flags,
 				transport_get(remote, url[i]);
 			if (flags & TRANSPORT_PUSH_OPTIONS)
 				transport->push_options = push_options;
-			if (push_with_options(transport, flags))
+			if (push_with_options(transport, push_refspec, flags))
 				errs++;
 		}
 	} else {
@@ -457,7 +431,7 @@ static int do_push(const char *repo, int flags,
 			transport_get(remote, NULL);
 		if (flags & TRANSPORT_PUSH_OPTIONS)
 			transport->push_options = push_options;
-		if (push_with_options(transport, flags))
+		if (push_with_options(transport, push_refspec, flags))
 			errs++;
 	}
 	return !!errs;
@@ -625,6 +599,20 @@ int cmd_push(int argc, const char **argv, const char *prefix)
 		die(_("--delete is incompatible with --all, --mirror and --tags"));
 	if (deleterefs && argc < 2)
 		die(_("--delete doesn't make sense without any refs"));
+	if (flags & TRANSPORT_PUSH_ALL) {
+		if (tags)
+			die(_("--all and --tags are incompatible"));
+		if (argc >= 2)
+			die(_("--all can't be combined with refspecs"));
+	}
+	if (flags & TRANSPORT_PUSH_MIRROR) {
+		if (tags)
+			die(_("--mirror and --tags are incompatible"));
+		if (argc >= 2)
+			die(_("--mirror can't be combined with refspecs"));
+	}
+	if ((flags & TRANSPORT_PUSH_ALL) && (flags & TRANSPORT_PUSH_MIRROR))
+		die(_("--all and --mirror are incompatible"));
 
 	if (recurse_submodules == RECURSE_SUBMODULES_CHECK)
 		flags |= TRANSPORT_RECURSE_SUBMODULES_CHECK;
@@ -634,7 +622,7 @@ int cmd_push(int argc, const char **argv, const char *prefix)
 		flags |= TRANSPORT_RECURSE_SUBMODULES_ONLY;
 
 	if (tags)
-		add_refspec("refs/tags/*");
+		refspec_append(&rs, "refs/tags/*");
 
 	if (argc > 0) {
 		repo = argv[0];
diff --git a/builtin/remote.c b/builtin/remote.c
index 0bbf9f4c9e..1a82d850a2 100644
--- a/builtin/remote.c
+++ b/builtin/remote.c
@@ -7,6 +7,7 @@
 #include "strbuf.h"
 #include "run-command.h"
 #include "refs.h"
+#include "refspec.h"
 #include "argv-array.h"
 
 static const char * const builtin_remote_usage[] = {
@@ -336,10 +337,10 @@ static int get_ref_states(const struct ref *remote_refs, struct ref_states *stat
 	struct ref *ref, *stale_refs;
 	int i;
 
-	for (i = 0; i < states->remote->fetch_refspec_nr; i++)
-		if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
+	for (i = 0; i < states->remote->fetch.nr; i++)
+		if (get_fetch_map(remote_refs, &states->remote->fetch.items[i], &tail, 1))
 			die(_("Could not get fetch map for refspec %s"),
-				states->remote->fetch_refspec[i]);
+				states->remote->fetch.raw[i]);
 
 	states->new_refs.strdup_strings = 1;
 	states->tracked.strdup_strings = 1;
@@ -350,8 +351,7 @@ static int get_ref_states(const struct ref *remote_refs, struct ref_states *stat
 		else
 			string_list_append(&states->tracked, abbrev_branch(ref->name));
 	}
-	stale_refs = get_stale_heads(states->remote->fetch,
-				     states->remote->fetch_refspec_nr, fetch_map);
+	stale_refs = get_stale_heads(&states->remote->fetch, fetch_map);
 	for (ref = stale_refs; ref; ref = ref->next) {
 		struct string_list_item *item =
 			string_list_append(&states->stale, abbrev_branch(ref->name));
@@ -391,8 +391,7 @@ static int get_push_ref_states(const struct ref *remote_refs,
 	local_refs = get_local_heads();
 	push_map = copy_ref_list(remote_refs);
 
-	match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
-			remote->push_refspec, MATCH_REFS_NONE);
+	match_push_refs(local_refs, &push_map, &remote->push, MATCH_REFS_NONE);
 
 	states->push.strdup_strings = 1;
 	for (ref = push_map; ref; ref = ref->next) {
@@ -438,14 +437,14 @@ static int get_push_ref_states_noquery(struct ref_states *states)
 		return 0;
 
 	states->push.strdup_strings = 1;
-	if (!remote->push_refspec_nr) {
+	if (!remote->push.nr) {
 		item = string_list_append(&states->push, _("(matching)"));
 		info = item->util = xcalloc(1, sizeof(struct push_info));
 		info->status = PUSH_STATUS_NOTQUERIED;
 		info->dest = xstrdup(item->string);
 	}
-	for (i = 0; i < remote->push_refspec_nr; i++) {
-		struct refspec *spec = remote->push + i;
+	for (i = 0; i < remote->push.nr; i++) {
+		const struct refspec_item *spec = &remote->push.items[i];
 		if (spec->matching)
 			item = string_list_append(&states->push, _("(matching)"));
 		else if (strlen(spec->src))
@@ -465,7 +464,7 @@ static int get_head_names(const struct ref *remote_refs, struct ref_states *stat
 {
 	struct ref *ref, *matches;
 	struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
-	struct refspec refspec;
+	struct refspec_item refspec;
 
 	refspec.force = 0;
 	refspec.pattern = 1;
@@ -518,7 +517,7 @@ static int add_branch_for_removal(const char *refname,
 	const struct object_id *oid, int flags, void *cb_data)
 {
 	struct branches_for_remote *branches = cb_data;
-	struct refspec refspec;
+	struct refspec_item refspec;
 	struct known_remote *kr;
 
 	memset(&refspec, 0, sizeof(refspec));
@@ -589,12 +588,12 @@ static int migrate_file(struct remote *remote)
 		git_config_set_multivar(buf.buf, remote->url[i], "^$", 0);
 	strbuf_reset(&buf);
 	strbuf_addf(&buf, "remote.%s.push", remote->name);
-	for (i = 0; i < remote->push_refspec_nr; i++)
-		git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0);
+	for (i = 0; i < remote->push.raw_nr; i++)
+		git_config_set_multivar(buf.buf, remote->push.raw[i], "^$", 0);
 	strbuf_reset(&buf);
 	strbuf_addf(&buf, "remote.%s.fetch", remote->name);
-	for (i = 0; i < remote->fetch_refspec_nr; i++)
-		git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0);
+	for (i = 0; i < remote->fetch.raw_nr; i++)
+		git_config_set_multivar(buf.buf, remote->fetch.raw[i], "^$", 0);
 	if (remote->origin == REMOTE_REMOTES)
 		unlink_or_warn(git_path("remotes/%s", remote->name));
 	else if (remote->origin == REMOTE_BRANCHES)
@@ -649,11 +648,11 @@ static int mv(int argc, const char **argv)
 	strbuf_addf(&buf, "remote.%s.fetch", rename.new_name);
 	git_config_set_multivar(buf.buf, NULL, NULL, 1);
 	strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old_name);
-	for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
+	for (i = 0; i < oldremote->fetch.raw_nr; i++) {
 		char *ptr;
 
 		strbuf_reset(&buf2);
-		strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
+		strbuf_addstr(&buf2, oldremote->fetch.raw[i]);
 		ptr = strstr(buf2.buf, old_remote_context.buf);
 		if (ptr) {
 			refspec_updated = 1;
@@ -837,7 +836,7 @@ static int append_ref_to_tracked_list(const char *refname,
 	const struct object_id *oid, int flags, void *cb_data)
 {
 	struct ref_states *states = cb_data;
-	struct refspec refspec;
+	struct refspec_item refspec;
 
 	if (flags & REF_ISSYMREF)
 		return 0;
diff --git a/builtin/send-pack.c b/builtin/send-pack.c
index b5427f75e3..4923b1058c 100644
--- a/builtin/send-pack.c
+++ b/builtin/send-pack.c
@@ -126,8 +126,7 @@ static int send_pack_config(const char *k, const char *v, void *cb)
 
 int cmd_send_pack(int argc, const char **argv, const char *prefix)
 {
-	int i, nr_refspecs = 0;
-	const char **refspecs = NULL;
+	struct refspec rs = REFSPEC_INIT_PUSH;
 	const char *remote_name = NULL;
 	struct remote *remote = NULL;
 	const char *dest = NULL;
@@ -189,8 +188,7 @@ int cmd_send_pack(int argc, const char **argv, const char *prefix)
 	argc = parse_options(argc, argv, prefix, options, send_pack_usage, 0);
 	if (argc > 0) {
 		dest = argv[0];
-		refspecs = (const char **)(argv + 1);
-		nr_refspecs = argc - 1;
+		refspec_appendn(&rs, argv + 1, argc - 1);
 	}
 
 	if (!dest)
@@ -209,31 +207,23 @@ int cmd_send_pack(int argc, const char **argv, const char *prefix)
 	args.push_options = push_options.nr ? &push_options : NULL;
 
 	if (from_stdin) {
-		struct argv_array all_refspecs = ARGV_ARRAY_INIT;
-
-		for (i = 0; i < nr_refspecs; i++)
-			argv_array_push(&all_refspecs, refspecs[i]);
-
 		if (args.stateless_rpc) {
 			const char *buf;
 			while ((buf = packet_read_line(0, NULL)))
-				argv_array_push(&all_refspecs, buf);
+				refspec_append(&rs, buf);
 		} else {
 			struct strbuf line = STRBUF_INIT;
 			while (strbuf_getline(&line, stdin) != EOF)
-				argv_array_push(&all_refspecs, line.buf);
+				refspec_append(&rs, line.buf);
 			strbuf_release(&line);
 		}
-
-		refspecs = all_refspecs.argv;
-		nr_refspecs = all_refspecs.argc;
 	}
 
 	/*
 	 * --all and --mirror are incompatible; neither makes sense
 	 * with any refspecs.
 	 */
-	if ((nr_refspecs > 0 && (send_all || args.send_mirror)) ||
+	if ((rs.nr > 0 && (send_all || args.send_mirror)) ||
 	    (send_all && args.send_mirror))
 		usage_with_options(send_pack_usage, options);
 
@@ -275,8 +265,6 @@ int cmd_send_pack(int argc, const char **argv, const char *prefix)
 		BUG("unknown protocol version");
 	}
 
-	transport_verify_remote_names(nr_refspecs, refspecs);
-
 	local_refs = get_local_heads();
 
 	flags = MATCH_REFS_NONE;
@@ -287,7 +275,7 @@ int cmd_send_pack(int argc, const char **argv, const char *prefix)
 		flags |= MATCH_REFS_MIRROR;
 
 	/* match them up */
-	if (match_push_refs(local_refs, &remote_refs, nr_refspecs, refspecs, flags))
+	if (match_push_refs(local_refs, &remote_refs, &rs, flags))
 		return -1;
 
 	if (!is_empty_cas(&cas))
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 7c3cd9dbeb..bd250ca216 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -12,6 +12,7 @@
 #include "run-command.h"
 #include "remote.h"
 #include "refs.h"
+#include "refspec.h"
 #include "connect.h"
 #include "revision.h"
 #include "diffcore.h"
@@ -1753,13 +1754,14 @@ static int push_check(int argc, const char **argv, const char *prefix)
 
 	/* Check the refspec */
 	if (argc > 2) {
-		int i, refspec_nr = argc - 2;
+		int i;
 		struct ref *local_refs = get_local_heads();
-		struct refspec *refspec = parse_push_refspec(refspec_nr,
-							     argv + 2);
+		struct refspec refspec = REFSPEC_INIT_PUSH;
 
-		for (i = 0; i < refspec_nr; i++) {
-			struct refspec *rs = refspec + i;
+		refspec_appendn(&refspec, argv + 2, argc - 2);
+
+		for (i = 0; i < refspec.nr; i++) {
+			const struct refspec_item *rs = &refspec.items[i];
 
 			if (rs->pattern || rs->matching)
 				continue;
@@ -1786,7 +1788,7 @@ static int push_check(int argc, const char **argv, const char *prefix)
 				    rs->src);
 			}
 		}
-		free_refspec(refspec_nr, refspec);
+		refspec_clear(&refspec);
 	}
 	free(head);