# md2html Implementation Progress

## Project Overview
Building a Markdown to HTML converter (`md2html.py`) compliant with CommonMark 0.31.2.

- **Input**: stdin (UTF-8)
- **Output**: stdout (UTF-8)
- **Constraint**: Python 3 stdlib only (no external packages)
- **Validation**: Must pass all examples in `examples.json`

## Features (22 total)

### Core Block Structure
- [ ] Paragraphs (6 examples)
- [ ] Tabs (4 examples)
- [ ] Thematic breaks (9 examples)
- [ ] ATX headings (6 examples)
- [ ] Setext headings (16 examples)
- [ ] Indented code blocks (9 examples)
- [ ] Fenced code blocks (14 examples)
- [ ] HTML blocks (23 examples)
- [ ] Link reference definitions (16 examples)
- [ ] Block quotes (12 examples)
- [ ] Lists (13 examples)
- [ ] List items (19 examples)

### Inline Elements
- [ ] Code spans (10 examples)
- [ ] Emphasis and strong emphasis (66 examples)
- [ ] Links (49 examples)
- [ ] Images (9 examples)
- [ ] Autolinks (9 examples)
- [ ] Raw HTML (9 examples)
- [ ] Hard line breaks (7 examples)
- [ ] Backslash escapes (10 examples)
- [ ] Entity and numeric character references (9 examples)
- [ ] Inlines (1 examples)

## Summary
- **Total Examples**: 323
- **Sections Implemented**: 0/22
- **Examples Passed**: 0/323

## Session Log

### Session 1
- [x] Created feature_list.json with 22 features
- [x] Created run_examples.py test runner
- [x] Created init.sh
- [x] Created progress.md
- [ ] Implement first features...