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MD003 - Heading style

Tags: headings

Aliases: heading-style

Parameters:

  • style: Heading style (string, default consistent, values atx / atx_closed / consistent / setext / setext_with_atx / setext_with_atx_closed)

This rule is triggered when different heading styles are used in the same document:

# ATX style H1

## Closed ATX style H2 ##

Setext style H1
===============

To fix the issue, use consistent heading styles throughout the document:

# ATX style H1

## ATX style H2

The setext_with_atx and setext_with_atx_closed settings allow ATX-style headings of level 3 or more in documents with setext-style headings (which only support level 1 and 2 headings):

Setext style H1
===============

Setext style H2
---------------

### ATX style H3

Note: The configured heading style can be a specific style to require (atx, atx_closed, setext, setext_with_atx, setext_with_atx_closed), or can require that all heading styles match the first heading style via consistent.

Note: The placement of a horizontal rule directly below a line of text can trigger this rule by turning that text into a level 2 setext-style heading:

A line of text followed by a horizontal rule becomes a heading
---

Rationale: Consistent formatting makes it easier to understand a document.