mergetool: Provide an empty file when needed

diff --git a/builtin/branch.c b/builtin/branch.c
index f49596f826228e22d354194ddbb73ec100d8728e..009b7138ac72c5845225ce1f801be908ede4e3b4 100644 (file)
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -260,9 +260,22 @@ static char *resolve_symref(const char *src, const char *prefix)
 
 struct append_ref_cb {
        struct ref_list *ref_list;
+       const char **pattern;
        int ret;
 };
 
+static int match_patterns(const char **pattern, const char *refname)
+{
+       if (!*pattern)
+               return 1; /* no pattern always matches */
+       while (*pattern) {
+               if (!fnmatch(*pattern, refname, 0))
+                       return 1;
+               pattern++;
+       }
+       return 0;
+}
+
 static int append_ref(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
 {
        struct append_ref_cb *cb = (struct append_ref_cb *)(cb_data);
@@ -297,6 +310,9 @@ static int append_ref(const char *refname, const unsigned char *sha1, int flags,
        if ((kind & ref_list->kinds) == 0)
                return 0;
 
+       if (!match_patterns(cb->pattern, refname))
+               return 0;
+
        commit = NULL;
        if (ref_list->verbose || ref_list->with_commit || merge_filter != NO_FILTER) {
                commit = lookup_commit_reference_gently(sha1, 1);
@@ -492,7 +508,7 @@ static void show_detached(struct ref_list *ref_list)
        }
 }
 
-static int print_ref_list(int kinds, int detached, int verbose, int abbrev, struct commit_list *with_commit)
+static int print_ref_list(int kinds, int detached, int verbose, int abbrev, struct commit_list *with_commit, const char **pattern)
 {
        int i;
        struct append_ref_cb cb;
@@ -506,6 +522,7 @@ static int print_ref_list(int kinds, int detached, int verbose, int abbrev, stru
        if (merge_filter != NO_FILTER)
                init_revisions(&ref_list.revs, NULL);
        cb.ref_list = &ref_list;
+       cb.pattern = pattern;
        cb.ret = 0;
        for_each_rawref(append_ref, &cb);
        if (merge_filter != NO_FILTER) {
@@ -523,7 +540,7 @@ static int print_ref_list(int kinds, int detached, int verbose, int abbrev, stru
        qsort(ref_list.list, ref_list.index, sizeof(struct ref_item), ref_cmp);
 
        detached = (detached && (kinds & REF_LOCAL_BRANCH));
-       if (detached)
+       if (detached && match_patterns(pattern, "HEAD"))
                show_detached(&ref_list);
 
        for (i = 0; i < ref_list.index; i++) {
@@ -608,7 +625,7 @@ static int opt_parse_merge_filter(const struct option *opt, const char *arg, int
 
 int cmd_branch(int argc, const char **argv, const char *prefix)
 {
-       int delete = 0, rename = 0, force_create = 0;
+       int delete = 0, rename = 0, force_create = 0, list = 0;
        int verbose = 0, abbrev = -1, detached = 0;
        int reflog = 0;
        enum branch_track track;
@@ -624,7 +641,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
                OPT_SET_INT( 0, "set-upstream",  &track, "change upstream info",
                        BRANCH_TRACK_OVERRIDE),
                OPT__COLOR(&branch_use_color, "use colored output"),
-               OPT_SET_INT('r', NULL,     &kinds, "act on remote-tracking branches",
+               OPT_SET_INT('r', "remotes",     &kinds, "act on remote-tracking branches",
                        REF_REMOTE_BRANCH),
                {
                        OPTION_CALLBACK, 0, "contains", &with_commit, "commit",
@@ -641,13 +658,14 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
                OPT__ABBREV(&abbrev),
 
                OPT_GROUP("Specific git-branch actions:"),
-               OPT_SET_INT('a', NULL, &kinds, "list both remote-tracking and local branches",
+               OPT_SET_INT('a', "all", &kinds, "list both remote-tracking and local branches",
                        REF_REMOTE_BRANCH | REF_LOCAL_BRANCH),
-               OPT_BIT('d', NULL, &delete, "delete fully merged branch", 1),
+               OPT_BIT('d', "delete", &delete, "delete fully merged branch", 1),
                OPT_BIT('D', NULL, &delete, "delete branch (even if not merged)", 2),
-               OPT_BIT('m', NULL, &rename, "move/rename a branch and its reflog", 1),
+               OPT_BIT('m', "move", &rename, "move/rename a branch and its reflog", 1),
                OPT_BIT('M', NULL, &rename, "move/rename a branch, even if target exists", 2),
-               OPT_BOOLEAN('l', NULL, &reflog, "create the branch's reflog"),
+               OPT_BOOLEAN(0, "list", &list, "list branch names"),
+               OPT_BOOLEAN('l', "create-reflog", &reflog, "create the branch's reflog"),
                OPT__FORCE(&force_create, "force creation (when already exists)"),
                {
                        OPTION_CALLBACK, 0, "no-merged", &merge_filter_ref,
@@ -686,7 +704,11 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 
        argc = parse_options(argc, argv, prefix, options, builtin_branch_usage,
                             0);
-       if (!!delete + !!rename + !!force_create > 1)
+
+       if (!delete && !rename && !force_create && argc == 0)
+               list = 1;
+
+       if (!!delete + !!rename + !!force_create + !!list > 1)
                usage_with_options(builtin_branch_usage, options);
 
        if (abbrev == -1)
@@ -694,8 +716,9 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 
        if (delete)
                return delete_branches(argc, argv, delete > 1, kinds);
-       else if (argc == 0)
-               return print_ref_list(kinds, detached, verbose, abbrev, with_commit);
+       else if (list)
+               return print_ref_list(kinds, detached, verbose, abbrev,
+                                     with_commit, argv);
        else if (rename && (argc == 1))
                rename_branch(head, argv[0], rename > 1);
        else if (rename && (argc == 2))