void create_branch(const char *head, const char *name, const char *start_name,
int force, int reflog, enum branch_track track);
+/*
+ * Validates that the requested branch may be created, returning the
+ * interpreted ref in ref, force indicates whether (non-head) branches
+ * may be overwritten. A non-zero return value indicates that the force
+ * parameter was non-zero and the branch already exists.
+ *
+ * Contrary to all of the above, when attr_only is 1, the caller is
+ * not interested in verifying if it is Ok to update the named
+ * branch to point at a potentially different commit. It is merely
+ * asking if it is OK to change some attribute for the named branch
+ * (e.g. tracking upstream).
+ *
+ * NEEDSWORK: This needs to be split into two separate functions in the
+ * longer run for sanity.
+ *
+ */
+int validate_new_branchname(const char *name, struct strbuf *ref, int force, int attr_only);
+
/*
* Remove information about the state of working on the current
* branch. (E.g., MERGE_HEAD)
void remove_branch_state(void);
/*
- * Configure local branch "local" to merge remote branch "remote"
- * taken from origin "origin".
+ * Configure local branch "local" as downstream to branch "remote"
+ * from remote "origin". Used by git branch --set-upstream.
*/
#define BRANCH_CONFIG_VERBOSE 01
extern void install_branch_config(int flag, const char *local, const char *origin, const char *remote);