submodule-config: keep configured branch around

diff --git a/submodule-config.c b/submodule-config.c
index db1847ff6893de6329bf60729b72e8f6a33188b5..ebee1e4795738578662ddfa17fe3d0a0afb19542 100644 (file)
--- a/submodule-config.c
+++ b/submodule-config.c
@@ -59,6 +59,7 @@ static void free_one_config(struct submodule_entry *entry)
 {
        free((void *) entry->config->path);
        free((void *) entry->config->name);
+       free((void *) entry->config->branch);
        free((void *) entry->config->update_strategy.command);
        free(entry->config);
 }
@@ -199,6 +200,7 @@ static struct submodule *lookup_or_create_by_name(struct submodule_cache *cache,
        submodule->update_strategy.command = NULL;
        submodule->fetch_recurse = RECURSE_SUBMODULES_NONE;
        submodule->ignore = NULL;
+       submodule->branch = NULL;
        submodule->recommend_shallow = -1;
 
        hashcpy(submodule->gitmodules_sha1, gitmodules_sha1);
@@ -358,9 +360,16 @@ static int parse_config(const char *var, const char *value, void *data)
                if (!me->overwrite && submodule->recommend_shallow != -1)
                        warn_multiple_config(me->commit_sha1, submodule->name,
                                             "shallow");
-               else {
+               else
                        submodule->recommend_shallow =
                                git_config_bool(var, value);
+       } else if (!strcmp(item.buf, "branch")) {
+               if (!me->overwrite && submodule->branch)
+                       warn_multiple_config(me->commit_sha1, submodule->name,
+                                            "branch");
+               else {
+                       free((void *)submodule->branch);
+                       submodule->branch = xstrdup(value);
                }
        }
 
@@ -377,7 +386,7 @@ static int gitmodule_sha1_from_commit(const unsigned char *commit_sha1,
        int ret = 0;
 
        if (is_null_sha1(commit_sha1)) {
-               hashcpy(gitmodules_sha1, null_sha1);
+               hashclr(gitmodules_sha1);
                return 1;
        }