Wikipedia Regular Expressions

Line Breaks

Search for legal and illegal forms of HTML Line Break Tag. Open tag, closing tag, self-closing tag. Allow whitespace before and after 'br' Tag ID. Allow whitespace before opening Tag Delimiter (<) and after closing Tag Delimiter (>).

Wikimedia Tag Parser has funny rules for an HTML Line Break Tag. No matching Begin/End tags (<br></br>). Either Begin or End tag alone counts as a Line Break Tag. After normal start to tag (<br or </br), almost anything goes until closing '>'. Including a text Line Break!

	\s*<\/?br(\s*[^|{}]*)?>\s*

Replace HTML Line Break Tag with Wikimedia {{break}} template. Replacement string includes a space before opening Template Delimiter ({{) and after closing Template Delimiter (}}).

	{{break | 1}}