René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"ValueError: unexpected delta opcode 0","articleBody":"# Summary\r\nWhile using [Aider](https://github.com/paul-gauthier/aider), which uses `gitdb==4.0.10` (I also see the same issue when upgrading to 4.0.11) the following fatal failure occurs:\r\n```\r\naider\r\n...\r\nUse /help to see in-chat commands, run with --help to see cmd line args\r\nTraceback (most recent call last):\r\n  File \"/opt/homebrew/bin/aider\", line 33, in \u003cmodule\u003e\r\n    sys.exit(load_entry_point('aider-chat', 'console_scripts', 'aider')())\r\n             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/Users/steve_cosenza/workspace/aider/aider/main.py\", line 576, in main\r\n    coder.run()\r\n  File \"/Users/steve_cosenza/workspace/aider/aider/coders/base_coder.py\", line 319, in run\r\n    new_user_message = self.run_loop()\r\n                       ^^^^^^^^^^^^^^^\r\n  File \"/Users/steve_cosenza/workspace/aider/aider/coders/base_coder.py\", line 390, in run_loop\r\n    self.get_addable_relative_files(),\r\n    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/Users/steve_cosenza/workspace/aider/aider/coders/base_coder.py\", line 714, in get_addable_relative_files\r\n    return set(self.get_all_relative_files()) - set(self.get_inchat_relative_files())\r\n               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/Users/steve_cosenza/workspace/aider/aider/coders/base_coder.py\", line 696, in get_all_relative_files\r\n    files = self.repo.get_tracked_files()\r\n            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/Users/steve_cosenza/workspace/aider/aider/repo.py\", line 187, in get_tracked_files\r\n    for blob in commit.tree.traverse():\r\n  File \"/opt/homebrew/lib/python3.11/site-packages/git/objects/util.py\", line 526, in _traverse\r\n    addToStack(stack, item, branch_first, nd)\r\n  File \"/opt/homebrew/lib/python3.11/site-packages/git/objects/util.py\", line 488, in addToStack\r\n    lst = self._get_intermediate_items(item)\r\n          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/opt/homebrew/lib/python3.11/site-packages/git/objects/tree.py\", line 239, in _get_intermediate_items\r\n    return tuple(index_object._iter_convert_to_object(index_object._cache))\r\n                                                      ^^^^^^^^^^^^^^^^^^^\r\n  File \"/opt/homebrew/lib/python3.11/site-packages/gitdb/util.py\", line 253, in __getattr__\r\n    self._set_cache_(attr)\r\n  File \"/opt/homebrew/lib/python3.11/site-packages/git/objects/tree.py\", line 246, in _set_cache_\r\n    self._cache: List[TreeCacheTup] = tree_entries_from_data(ostream.read())\r\n                                                             ^^^^^^^^^^^^^^\r\n  File \"/opt/homebrew/lib/python3.11/site-packages/gitdb/base.py\", line 138, in read\r\n    return self[3].read(size)\r\n           ^^^^^^^^^^^^^^^^^^\r\n  File \"/opt/homebrew/lib/python3.11/site-packages/gitdb/stream.py\", line 487, in read\r\n    bl = self._size - self._br      # bytes left\r\n         ^^^^^^^^^^\r\n  File \"/opt/homebrew/lib/python3.11/site-packages/gitdb/util.py\", line 253, in __getattr__\r\n    self._set_cache_(attr)\r\n  File \"/opt/homebrew/lib/python3.11/site-packages/gitdb/stream.py\", line 461, in _set_cache_brute_\r\n    apply_delta_data(bbuf, src_size, ddata, len(ddata), tbuf.write)\r\n  File \"/opt/homebrew/lib/python3.11/site-packages/gitdb/fun.py\", line 673, in apply_delta_data\r\n    raise ValueError(\"unexpected delta opcode 0\")\r\nValueError: unexpected delta opcode 0\r\n```\r\n\r\n# Repro Details\r\n* The git repo being used is a large Github Enterprise hosted monorepo\r\n* I'm running Aider/gitdb on a Mac M2 running Sonoma 14.0\r\n* The following git client version is installed: 2.40.0","author":{"url":"https://github.com/scosenza","@type":"Person","name":"scosenza"},"datePublished":"2023-10-27T02:04:52.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/106/gitdb/issues/106"}