mailinfo: avoid violating strbuf assertion

diff --git a/builtin-merge.c b/builtin-merge.c
index 06b9970306396ca8ef2b64d95a411280796f4017..dde0c7ed33118ff8d0cc421e8a0366e342c6d011 100644 (file)
--- a/builtin-merge.c
+++ b/builtin-merge.c
@@ -66,16 +66,18 @@ static int option_parse_message(const struct option *opt,
 
        if (unset)
                strbuf_setlen(buf, 0);
-       else {
+       else if (arg) {
                strbuf_addf(buf, "%s\n\n", arg);
                have_message = 1;
-       }
+       } else
+               return error("switch `m' requires a value");
        return 0;
 }
 
 static struct strategy *get_strategy(const char *name)
 {
        int i;
+       struct strbuf err;
 
        if (!name)
                return NULL;
@@ -83,7 +85,13 @@ static struct strategy *get_strategy(const char *name)
        for (i = 0; i < ARRAY_SIZE(all_strategy); i++)
                if (!strcmp(name, all_strategy[i].name))
                        return &all_strategy[i];
-       return NULL;
+
+       strbuf_init(&err, 0);
+       for (i = 0; i < ARRAY_SIZE(all_strategy); i++)
+               strbuf_addf(&err, " %s", all_strategy[i].name);
+       fprintf(stderr, "Could not find merge strategy '%s'.\n", name);
+       fprintf(stderr, "Available strategies are:%s.\n", err.buf);
+       exit(1);
 }
 
 static void append_strategy(struct strategy *s)
@@ -95,25 +103,10 @@ static void append_strategy(struct strategy *s)
 static int option_parse_strategy(const struct option *opt,
                                 const char *name, int unset)
 {
-       int i;
-       struct strategy *s;
-
        if (unset)
                return 0;
 
-       s = get_strategy(name);
-
-       if (s)
-               append_strategy(s);
-       else {
-               struct strbuf err;
-               strbuf_init(&err, 0);
-               for (i = 0; i < ARRAY_SIZE(all_strategy); i++)
-                       strbuf_addf(&err, " %s", all_strategy[i].name);
-               fprintf(stderr, "Could not find merge strategy '%s'.\n", name);
-               fprintf(stderr, "Available strategies are:%s.\n", err.buf);
-               exit(1);
-       }
+       append_strategy(get_strategy(name));
        return 0;
 }
 
@@ -403,12 +396,12 @@ static void merge_name(const char *remote, struct strbuf *msg)
                struct strbuf truname = STRBUF_INIT;
                strbuf_addstr(&truname, "refs/heads/");
                strbuf_addstr(&truname, remote);
-               strbuf_setlen(&truname, len+11);
+               strbuf_setlen(&truname, truname.len - len);
                if (resolve_ref(truname.buf, buf_sha, 0, 0)) {
                        strbuf_addf(msg,
                                    "%s\t\tbranch '%s'%s of .\n",
                                    sha1_to_hex(remote_head->sha1),
-                                   truname.buf,
+                                   truname.buf + 11,
                                    (early ? " (early part)" : ""));
                        return;
                }
@@ -438,7 +431,7 @@ static void merge_name(const char *remote, struct strbuf *msg)
                sha1_to_hex(remote_head->sha1), remote);
 }
 
-int git_merge_config(const char *k, const char *v, void *cb)
+static int git_merge_config(const char *k, const char *v, void *cb)
 {
        if (branch && !prefixcmp(k, "branch.") &&
                !prefixcmp(k + 7, branch) &&
@@ -579,6 +572,7 @@ static int checkout_fast_forward(unsigned char *head, unsigned char *remote)
        memset(&trees, 0, sizeof(trees));
        memset(&opts, 0, sizeof(opts));
        memset(&t, 0, sizeof(t));
+       memset(&dir, 0, sizeof(dir));
        dir.show_ignored = 1;
        dir.exclude_per_dir = ".gitignore";
        opts.dir = &dir;
@@ -642,14 +636,9 @@ static void add_strategies(const char *string, unsigned attr)
 
        memset(&list, 0, sizeof(list));
        split_merge_strategies(string, &list, &list_nr, &list_alloc);
-       if (list != NULL) {
-               for (i = 0; i < list_nr; i++) {
-                       struct strategy *s;
-
-                       s = get_strategy(list[i].name);
-                       if (s)
-                               append_strategy(s);
-               }
+       if (list) {
+               for (i = 0; i < list_nr; i++)
+                       append_strategy(get_strategy(list[i].name));
                return;
        }
        for (i = 0; i < ARRAY_SIZE(all_strategy); i++)