Tags: blank_lines
, headers
, headings
Aliases: blanks-around-headers
, blanks-around-headings
Parameters:
lines_above
: Blank lines above heading (integer|integer[]
, default1
)lines_below
: Blank lines below heading (integer|integer[]
, default1
)
Fixable: Some violations can be fixed by tooling
This rule is triggered when headings (any style) are either not preceded or not followed by at least one blank line:
# Heading 1
Some text
Some more text
## Heading 2
To fix this, ensure that all headings have a blank line both before and after (except where the heading is at the beginning or end of the document):
# Heading 1
Some text
Some more text
## Heading 2
The lines_above
and lines_below
parameters can be used to specify a
different number of blank lines (including 0
) above or below each heading.
If the value -1
is used for either parameter, any number of blank lines is
allowed. To customize the number of lines above or below each heading level
individually, specify a number[]
where values correspond to heading levels
1-6 (in order).
Notes: If lines_above
or lines_below
are configured to require more than one
blank line, MD012/no-multiple-blanks should also be customized. This
rule checks for at least as many blank lines as specified; any extra blank
lines are ignored.
Rationale: Aside from aesthetic reasons, some parsers, including kramdown
,
will not parse headings that don't have a blank line before, and will parse them
as regular text.