Known limits

Platform

macOS on Apple Silicon only, macOS 14 or later. There is no Intel build in the alpha.
No Linux or Windows, deliberately. crc talks to Metal and CoreText directly; a port would mean writing a second backend from scratch. See Architecture.

Highlighting covers the listed languages. Each grammar is vendored generated C pinned in third_party/CHECKSUMS. SQL is not in the alpha.
Five language servers, and no code actions from them.

No minimap.
Panes are a way of looking. A file is open in one pane at a time, and a restored session puts every pane’s files into one pane.
Bounded by design. Project search skips files over 2 MiB and shows the first 500 matches. The bracket matcher counts its own pair only and does not skip strings or comments.
Text input is new. Dead keys and IME go through macOS text input and need wider testing across layouts.

Gutter marks compare with HEAD, not the index, and stop at 2 MiB.
Hunk staging covers tracked text changes; other change types use whole-file actions.
Pull is fast-forward only, and crc has no merge or rebase command of its own. Conflicts from one you ran are resolved in crc; finishing, continuing or aborting it is Git’s.
Conflict markers are Git’s default seven characters. A custom conflict-marker-size is not recognised, and files over 16 MiB are not scanned for conflicts.

Files over 512 MB open read-only; files over 2 GB are refused. Both say why.
Crash recovery covers crashes in crc’s own code, not a power cut.

Updates are announced, not installed. Once a day crc asks GitHub whether a newer release exists and says so in the status line. Nothing is downloaded. update_check = false turns the check off.
Extensions are new and narrow. They can read and replace the selection or the document and add commands; nothing else yet. The signed registry is not live until its first release, so for now they install from a folder. See Extensions.