From ad25bb029ae430ffadfe6afd86bab4eed33a9a76 Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Tue, 24 Mar 2026 09:03:13 +0000
Subject: ROADMAP: Split from README

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 ROADMAP.md | 211 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 211 insertions(+)
 create mode 100644 ROADMAP.md

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+# Roadmap
+
+* Configuration
+  * [X] Parsing
+  * [ ] Includes
+  * [ ] Writing
+* [X] Object IDs
+  * [X] SHA-256
+  * [X] SHA-1
+* [X] Object model (incl., parse, serialize)
+  * [X] Blobs
+  * [X] Trees
+    * [X] File mode definitions
+    * [X] Entry insertion ordering
+    * [X] Traversal
+    * [ ] Pathspec
+  * [X] Commits
+  * [X] Annotated tags
+  * [X] Stored objects
+* Further cryptography
+  * [ ] OpenPGP signatures
+  * [ ] SSH signatures
+* [X] Reading object stores
+  * [X] Pluggable interface
+  * [X] Chain lookup store
+  * [X] Bundle store
+  * [X] MRU lookup store
+  * [X] Reading loose objects
+  * [ ] Promisor remotes
+  * [ ] Alternates
+  * [X] Reading packed objects
+    * [X] Pack index lookups
+    * [X] Delta caching
+    * [X] Delta application
+    * [ ] Pack-wide bloom filters
+    * [ ] Multi pack indexes
+* [ ] Writing objects
+  * [X] Loose object writing
+* Misc bundle features
+  * [ ] Writing bundles
+* Misc packfile features
+  * [X] Writing pack indexes
+  * [X] Writing reverse pack indexes
+  * [ ] Writing packfiles
+    * [ ] Writing thin packs
+    * [ ] Compressing deltas
+      * [ ] Delta islands
+  * [ ] Pack verification
+* Compression
+  * [ ] Plugabble compression algorithms
+  * [X] ZLIB support
+  * [ ] DEFLATE optimizations
+  * [X] Adler-32 SIMD optimizations
+* [X] References
+  * [X] Detached references
+  * [X] Symbolic references
+  * [X] Name verification/resolution
+  * [X] Annotated tag ref peeling
+  * [ ] Describe
+  * [ ] Revision syntax
+  * [ ] Namespaces
+  * [ ] Replace refs, grafts
+* [X] Reference stores
+  * [X] Chain lookup store
+  * [X] Files reference store
+    * [X] Reading loose refs
+    * [X] Reading packed refs
+    * [X] Atomic writes
+    * [X] Batched writes
+    * [ ] Packing refs
+    * [ ] Reflogs
+  * [ ] Reftable
+* Reachability
+  * [X] Have/wants walks
+  * [X] Is ancestor
+  * [X] Merge bases
+  * [X] Commit graph
+    * [X] Changed path bloom filters
+    * [X] Chained graphs
+    * [ ] Writing
+  * [ ] Reachability bitmaps
+    * [ ] For a single packfile
+    * [ ] For Multi pack indexes
+* Misc repository
+  * [X] Opening relevant stores
+  * [ ] Creating repositories
+  * [ ] Filter branch/repo
+  * [ ] Fast import/export
+  * [ ] Git notes
+  * [ ] Git attributes
+  * [ ] Pseudorefs
+  * Integrity and maintenance
+    * [ ] Fsck
+    * [ ] Repacking
+    * [ ] Garbage collection
+    * [ ] Cruft packing
+    * [ ] Expiration
+  * [ ] Grep
+  * [ ] Submodules
+  * [ ] Worktrees
+  * [ ] Archive
+  * [ ] LFS
+  * [ ] Revision log walk
+    * [ ] Topological ordering
+    * [ ] Date ordering
+    * [ ] Path-limited
+* [ ] Diffing
+  * [ ] Blame
+  * [ ] Annotate
+  * [X] Tree diffing
+    * [ ] Similarity/rename/copy detection
+  * [ ] Multi-way diffs
+  * [ ] Patch-id
+  * [ ] Range-diff
+  * Blob diffing
+    * [ ] Word diffs
+    * [X] Myers
+    * [ ] Patience
+    * [ ] Histogram
+    * [ ] Tree-way
+  * [ ] Format patch
+  * [ ] Apply/amend patch
+* Branch integration/rewrite/etc methods
+  * [ ] Merge
+    * [ ] Recursive
+    * [ ] ORT
+  * [ ] Rebase
+  * [ ] Cherry pick
+  * [ ] Revert
+  * [ ] Rerere
+* Network protocols and related features
+  * [X] pkt-line
+  * [X] side-band-64k
+  * [X] Ingesting packfiles
+    * [X] Quarantine areas
+    * [X] Un-thinning thin packs
+  * Version 0, version 1 protocols
+    * [X] Server side
+      * [X] Reference advertisement
+      * [X] Capability negotiation
+      * [X] Receive
+      * [ ] "Upload"
+    * [ ] Client side
+      * [ ] Send
+      * [ ] Fetch
+  * Version 2 protocol
+    * [ ] Server side
+      * [ ] "Upload"
+    * [ ] Client side
+      * [ ] Fetch
+  * Protocol-independent logic
+    * Common
+      * [X] Progress meters
+    * Client side
+      * [ ] Refspec
+      * [ ] Fetch
+        * [ ] Partial clones
+          * [ ] Object filtering
+        * [ ] Bundle URI
+        * [ ] Packfile URI
+        * [ ] Shallow clones
+      * [ ] Send
+    * Server side
+      * [ ] Upload
+        * [ ] Object filtering
+      * [X] Receive
+        * [ ] Signed push
+        * Hooks
+          * Slots
+            * [ ] After ref negotiation
+            * [X] After object unpacking
+          * Provided samples
+            * [X] Chain
+            * [X] Force push rejection
+* [ ] Working trees
+  * [ ] Stashing
+  * [ ] Ignore rules
+  * [ ] Checkouts
+    * [ ] Sparse checkouts
+    * [ ] CR/LF conversions
+    * [ ] File mode conversions
+  * [ ] Indexes
+    * [ ] Conflict resolution
+    * [ ] Split index
+    * [ ] Sparse index
+    * [ ] Untracked cache
+  * [ ] Status listing
+  * [ ] Filesystem monitor
+  * [ ] Worktree
+    * [ ] Common directory
+    * [ ] Worktree-specific references
+* Research
+  * [ ] Dynamic packfiles
+    * [ ] Compaction; page-sized hole punching
+    * [ ] Dynamic indexing
+      * [ ] Linear/extendible/spiral hashing
+    * [ ] Dynamic reachability bitmaps
+
+## Not planned
+
+* CLI tools
+* Clone
+* Anything reasonably considered "porcelain"
+* Credential helper
+* Transports
+* Auth
+* Remote management
+* Bisect
+* Any use of env vars
+* Repository discovery walking
+
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