spec-driven-docs 0.6.3

Spec-driven documentation: current specs, immutable decision records, and executable gates kept coherent for people and coding agents.
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# Writing Style Specification

<!--TOC-->

- [Purpose](#purpose)
- [Requirements](#requirements)
  - [`writing-style:an-existing-document-converts-when-edited` — An existing document converts when edited](#writing-stylean-existing-document-converts-when-edited--an-existing-document-converts-when-edited)
  - [`writing-style:the-documentation-block-routes-to-the-style` — The documentation block routes to the style](#writing-stylethe-documentation-block-routes-to-the-style--the-documentation-block-routes-to-the-style)
  - [`writing-style:no-delivered-gate-judges-prose` — No delivered gate judges prose](#writing-styleno-delivered-gate-judges-prose--no-delivered-gate-judges-prose)
  - [`writing-style:sources-name-the-revision-read` — Sources name the revision read](#writing-stylesources-name-the-revision-read--sources-name-the-revision-read)
  - [`writing-style:the-style-lives-in-one-document` — The style lives in one document](#writing-stylethe-style-lives-in-one-document--the-style-lives-in-one-document)
- [Unenforced](#unenforced)

<!--TOC-->

## Purpose

Rules governing how a project adopts and reaches the writing style. The style itself lives in `method/writing-style.md` and is available through `sdd method writing-style`. This spec does not restate its prose rules. An instance that already adopted `SPEC-simple-english.md` keeps that instance-owned copy, and `sdd` stops maintaining it.

## Requirements

### `writing-style:an-existing-document-converts-when-edited` — An existing document converts when edited

When an author edits a document already in the tree, the author MUST apply the writing style to that document and MUST NOT sweep untouched documents.

#### Scenario: A project adopts the style with an existing corpus

- GIVEN a corpus written before the project adopted the style
- WHEN an author edits one document
- THEN that document converts and every untouched document stays as it was

Verify: reviewer confirms each document the change edits follows the chapter, and that the change converts no untouched document

### `writing-style:the-documentation-block-routes-to-the-style` — The documentation block routes to the style

The documentation block MUST route an author to `sdd method writing-style` in one line and MUST NOT carry the style's rules.

#### Scenario: An agent prepares to author prose

- GIVEN a root author-instructions file with the managed documentation block
- WHEN the agent reads the block
- THEN one line names the command and no line restates a prose rule

Verify: reviewer confirms the managed documentation block carries one routing line and no writing rule

### `writing-style:no-delivered-gate-judges-prose` — No delivered gate judges prose

The distribution MUST NOT deliver a gate that judges prose against the writing style, and it MUST leave that judgment to review.

#### Scenario: An instance contains prose written under another convention

- GIVEN an existing project that installs this documentation method
- WHEN its delivered gates run
- THEN no gate rejects the project's prose for differing from the writing style

Verify: reviewer confirms the delivered gate registry contains no prose-style judge

### `writing-style:sources-name-the-revision-read` — Sources name the revision read

Where the style merges an external source, the style MUST name that source and the exact revision read.

#### Scenario: An upstream source changes after the style is authored

- GIVEN a source whose current branch moved
- WHEN a reader traces one of the style's layers
- THEN the recorded revision identifies the source text the author read

Verify: reviewer confirms each source row names a repository and a full revision

### `writing-style:the-style-lives-in-one-document` — The style lives in one document

The project MUST keep the writing rules in `method/writing-style.md` alone and MUST route every other surface to that document without restating them.

#### Scenario: A template needs to tell an author how to write prose

- GIVEN a template that provides author instructions
- WHEN the template adds writing-style guidance
- THEN it names `sdd method writing-style` instead of copying any rule

Verify: reviewer confirms every writing-style route points to the method chapter and carries no copied rule

## Unenforced

These rules require review because structure alone cannot prove author intent.

| Rule                                                        | Reviewer confirms                                                             |
| ----------------------------------------------------------- | ----------------------------------------------------------------------------- |
| `writing-style:an-existing-document-converts-when-edited`   | Each edited document follows the chapter, and no untouched document converted |
| `writing-style:the-documentation-block-routes-to-the-style` | The block carries one route and no rule text                                  |
| `writing-style:no-delivered-gate-judges-prose`              | No delivered gate judges the writing style                                    |
| `writing-style:sources-name-the-revision-read`              | Every source has a repository and full revision                               |
| `writing-style:the-style-lives-in-one-document`             | No other surface restates the rules                                           |