Merge branch 'jb/doc-packfile-name' into master

Doc update.

* jb/doc-packfile-name:
  pack-write/docs: update regarding pack naming

Documentation/git-index-pack.txt

@@ -104,8 +104,8 @@ This option cannot be used with --stdin.
 NOTES
 -----
 
-Once the index has been created, the list of object names is sorted
-and the SHA-1 hash of that list is printed to stdout. If --stdin was
+Once the index has been created, the hash that goes into the name of
+the pack/idx file is printed to stdout. If --stdin was
 also used then this is prefixed by either "pack\t", or "keep\t" if a
 new .keep file was successfully created. This is useful to remove a
 .keep file used as a lock to prevent the race with 'git repack'

pack-write.c

@@ -38,9 +38,8 @@ static int need_large_offset(off_t offset, const struct pack_idx_option *opts)
 }
 
 /*
- * On entry *sha1 contains the pack content SHA1 hash, on exit it is
- * the SHA1 hash of sorted object names. The objects array passed in
- * will be sorted by SHA1 on exit.
+ * The *sha1 contains the pack content SHA1 hash.
+ * The objects array passed in will be sorted by SHA1 on exit.
  */
 const char *write_idx_file(const char *index_name, struct pack_idx_entry **objects,
 			   int nr_objects, const struct pack_idx_option *opts,