readable-text-formatting

Readable Text Formatting

Ensure all generated formatted text is human-readable in raw monospace form. This applies to markdown tables, ASCII diagrams, and any text with visual structure.

Core Principles

1. Alignment is for human readers — raw .md files should be scannable in a text editor
2. Consistent column width — each column padded to the longest content in that column
3. Border alignment — all vertical and horizontal boundaries align perfectly

Markdown Tables

The Problem

| Name | Age | Occupation |
|---|---|---|
| Alice | 30 | Software Engineer |
| Christopher | 45 | Product Manager |

The Solution

| Name        | Age | Occupation        |
|-------------|-----|-------------------|
| Alice       | 30  | Software Engineer |
| Christopher | 45  | Product Manager   |

How to Create Aligned Tables

Step 1: Determine column widths — for each column, find max(header_length, max(all_data_lengths)).

Step 2: Pad all cells — add trailing spaces to reach the column width.

Step 3: Create separator — fill with dashes matching the column width exactly.

ASCII Diagrams

The Problem

┌─────────────┐
│ Title Here │
│ Some content that is longer │
└─────────────┘

The Solution

All borders must align vertically:

┌──────────────────────────────┐
│ Title Here                   │
│ Some content that is longer  │
└──────────────────────────────┘

How to Create Aligned Diagrams

Step 1: Find maximum content width — the longest line inside the box.

Step 2: Calculate border width — content_width + 2 (padding) + 2 (border chars).

Step 3: Build each line:

• Top: ┌ + dashes + ┐
• Content: │ + text + padding + │
• Bottom: └ + dashes + ┘

Self-Check Before Output

Before finalizing any formatted text, verify:

1. Visual alignment — all vertical lines align, all horizontal lines are continuous
2. Width consistency — every row/line has the same total width
3. Border integrity — top and bottom borders match width, left and right borders align on every line

Best Practices

• Monospace mental model: assume output is viewed in a monospace font
• Measure first: calculate all widths before generating text
• Default to ASCII-safe: if Unicode box-drawing might cause issues, use +, -, |
• Test with longest content: dimensions based on the widest content

References

• ASCII patterns, character sets, common mistakes, advanced examples: references/patterns-and-examples.md