src/subParsers/makehtml/horizontalRule.js
/**
* Turn Markdown horizontal rule shortcuts into <hr /> tags.
*
* Any 3 or more unindented consecutive hyphens, asterisks or underscores with or without a space beetween them
* in a single line is considered a horizontal rule
*/
showdown.subParser('makehtml.horizontalRule', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.horizontalRule.before', text, options, globals).getText();
var key = showdown.subParser('makehtml.hashBlock')('<hr />', options, globals);
text = text.replace(/^ {0,2}( ?-){3,}[ \t]*$/gm, key);
text = text.replace(/^ {0,2}( ?\*){3,}[ \t]*$/gm, key);
text = text.replace(/^ {0,2}( ?_){3,}[ \t]*$/gm, key);
text = globals.converter._dispatch('makehtml.horizontalRule.after', text, options, globals).getText();
return text;
});