NAME¶
Pandoc::Filter::HeaderIdentifiers - Add identifiers to headers
SYNOPSIS¶
my $id = header_identifier( $header->content ); # calculate identifier
Pandoc::Filter::HeaderIdentifiers->new->apply($doc); # add all identifiers
DESCRIPTION¶
This Pandoc::Filter adds identifier attributes (id) to all Headers elements. It
uses the same algorithm as internally used by pandoc. The module also exports
function "header_identifier" to calculate an
identifier from a list of elements.
FUNCTIONS¶
Returns an identifier for a given list of inlines or string
($content). Optionally takes into account and updates
existing ids, given as hash reference mapping identifier to usage count
($ids).
METHODS¶
apply( $element [, $ids ] )¶
Add identifiers to all Header elements found at a given element (typically a
Document. A hash reference of existing identifier counts (or an empty hash to
get the new counts) can be passed in addition.
CHARACTER PROPERTIES¶
InPandocHeaderIdentifier¶
Matches all Unicode lowercase letters, digits 0 to 9, underscore, hyphen, and
period. In the unlikely event that you want to check whether a given string
could have been generated as header identifier, use this:
$id =~ /^\p{InPandocHeaderIdentifier}+$/ and $id =~ /^\p{Letter}/
