On Thu, 8 Feb 2018 15:37:32 -0500 Derrick Stolee <sto...@gmail.com> wrote:
> Teach Git to delete the current 'graph_head' file and the commit graph > it references. This is a good safety valve if somehow the file is > corrupted and needs to be recalculated. Since the commit graph is a > summary of contents already in the ODB, it can be regenerated. Spelling of graph-head (hyphen, not underscore). I'm not sure of the usefulness of this feature - if the graph is indeed corrupt, the user can just be instructed to delete graph-head (not even the commit graph it references, since when we create a new graph-head, --delete-expired will take care of deleting the old one). > extern char *get_graph_head_filename(const char *pack_dir); > +extern struct object_id *get_graph_head_hash(const char *pack_dir, > + struct object_id *hash); > extern char* get_commit_graph_filename_hash(const char *pack_dir, > struct object_id *hash); This file is starting to need documentation - in particular, the difference between get_graph_head_hash() and get_commit_graph_filename_hash() is not clear.