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submarine/docs/README.md
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simonfrankenandClaude Sonnet 5.5 f5fabfd093 Add / filter for the tree
A text input above the footer filters submodules by path (case-insensitive).
Matches keep their ancestors. A filtered-out selection moves to the next
visible submodule; esc closes the input and removes the filter.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-21 21:15:24 +02:00

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# submarine — documentation
submarine is a terminal UI for git repositories with many (recursively nested)
submodules. It shows **only the submodules**, as a collapsible tree, and
describes each pin as a **branch plus distance** (`origin/main ↓1`) instead of a
bare commit hash.
## Documents
| Document | Contents |
|---|---|
| [requirements.md](requirements.md) | What the tool must do: functional and non-functional requirements |
| [state-model.md](state-model.md) | How a submodule's state is determined, summarized into issues, and how pins are resolved to refs |
| [ux-guide.md](ux-guide.md) | Layout, attention hierarchy, colors, wording, navigation and key bindings |
| [architecture.md](architecture.md) | Package layout, the provider boundary, async loading, testing |
| [decisions.md](decisions.md) | Decision log with rationale (ADR style) |
## Install
```sh
curl -fsSL https://git.simon-franken.de/simonfranken/submarine/raw/branch/main/install.sh | sh
```
Installs `submarine` and the alias `sub` (linux/macOS, amd64/arm64) to
`~/.local/bin`. Update with `submarine update`. Maintainers publish with
`GITEA_TOKEN=… make release` (see [architecture](architecture.md#distribution)).
## Status
**Prototype.** The UI is complete for browsing. It reads real repositories
through a git provider (`internal/submodule/git`): `submarine [dir]`. It
fetches in the background on startup (`--no-fetch` to skip; `f` to fetch
again) and follows changes made in other shells. `submarine --mock` shows
the built-in mock data (`internal/submodule/mock`). The actions `u`, `b`,
`!` only show a "not implemented" message.
Next steps, roughly in order:
1. Actions: checkout pin (`submodule update`), bump pin to tip, init.
2. "Problems only" (`!`) view; it can reuse the tree's filter.