# Vi-style Editor with Ollama Code Prediction

## Overview
Terminal-based code editor written in C with nvi-style modal editing and local LLM-powered code completion via Ollama. For Linux CLI. Target users: personal + colleagues.

## Editor Scope (nvi-style)

### Modal Editing
- Normal, Insert, Command-line (`:`) modes

### Navigation
- `h/j/k/l` — basic movement
- `w/b/e` — word movement
- `0/$` — line start/end
- `^f/^b` — page up/down
- `G/gg` — file start/end
- `f/t/F/T` — find char on line, with counts

### Operators + Motions
- `d`, `y`, `c` combined with any motion (e.g. `c3td`, `d$`, `y2w`)
- Single unnamed buffer for yank/delete
- `p/P` — paste after/before

### Other
- `.` — repeat last command
- `u` — undo
- `:w`, `:q`, `:wq`, `:e` — file commands
- `:/regex` — search
- `:%s/pat/rep/g` — substitution

### Out of Scope
- Macros, named registers, splits, tabs

## Language Support
- C
- Assembly

## Ollama Integration

### Models (user-configurable)
- gemma2:2b
- deepseek-r1:1.5b
- qwen2.5-coder:3b
- gemma3:4b

### Completion Behavior
- Idle timer in insert mode (~300ms) triggers completion request
- Tab to accept ghost text (rendered dim)
- Context sent: current function/block (enclosing `{}`) + current line
- Endpoint: `POST http://localhost:11434/api/generate` (streaming JSON)

## Architecture

```
src/
  main.c          — entry point, arg parsing
  terminal.c      — raw mode, ncurses screen management
  buffer.c        — gap buffer or piece table, line indexing
  editor.c        — editor state, viewport, cursor
  input.c         — keypress reading, modal dispatch
  normal.c        — normal mode commands, operator-motion parsing
  insert.c        — insert mode, char input, trigger completion
  command.c       — : command line parsing and execution
  search.c        — regex search (POSIX regex.h)
  undo.c          — undo list
  ollama.c        — HTTP client (libcurl), prompt building, response parsing
  syntax.c        — minimal scope detection for C/asm (brace matching)
  config.c        — runtime config (~/.editorrc or similar)
```

## Dependencies
- ncurses — terminal UI
- libcurl — Ollama HTTP communication
- POSIX regex.h — search/replace (libc)
- cJSON (or hand-rolled) — parse Ollama JSON responses

## Design Decisions to Finalize
- [ ] Text buffer: gap buffer (simpler) vs piece table (better for large files)
- [ ] Visual mode: include char/line visual mode?
- [ ] Config file format and location