docs: add filter-branch notes on The BFG

diff --git a/commit.h b/commit.h
index 35cc4e266bd4afe0e00d2efb2781db2e95906936..c308674120112f09ff8a9625e357c62e2029bbba 100644 (file)
--- a/commit.h
+++ b/commit.h
@@ -62,6 +62,9 @@ struct commit_list *commit_list_insert_by_date(struct commit *item,
                                    struct commit_list **list);
 void commit_list_sort_by_date(struct commit_list **list);
 
+/* Shallow copy of the input list */
+struct commit_list *copy_commit_list(struct commit_list *list);
+
 void free_commit_list(struct commit_list *list);
 
 /* Commit formats */
@@ -102,8 +105,6 @@ struct pretty_print_context {
         * Fields below here are manipulated internally by pp_* functions and
         * should not be counted on by callers.
         */
-
-       /* Manipulated by the pp_* functions internally. */
        struct string_list in_body_headers;
 };
 
@@ -200,6 +201,10 @@ extern struct commit_list *get_shallow_commits(struct object_array *heads,
                int depth, int shallow_flag, int not_shallow_flag);
 extern void check_shallow_file_for_update(void);
 extern void set_alternate_shallow_file(const char *path);
+extern int write_shallow_commits(struct strbuf *out, int use_pack_protocol);
+extern void setup_alternate_shallow(struct lock_file *shallow_lock,
+                                   const char **alternate_shallow_file);
+extern char *setup_temporary_shallow(void);
 
 int is_descendant_of(struct commit *, struct commit_list *);
 int in_merge_bases(struct commit *, struct commit *);