Function parseString

src/commonmark.js:1758–1787

(block)

// Parse a run of ordinary characters, or a single character with
// a special meaning in markdown, as a plain string.
var parseString = function(block) {
    var m;
    if ((m = this.match(reMain))) {
        if (this.options.smart) {
            block.appendChild(text(
                m.replace(reEllipses, "\u2026")
                    .replace(reDash, function(chars) {
                        var enCount = 0;
                        var emCount = 0;
                        if (chars.length % 3 === 0) { // If divisible by 3, use all em dashes
                            emCount = chars.length / 3;
                        } else if (chars.length % 2 === 0) { // If divisible by 2, use all en dashes
                            enCount = chars.length / 2;
                        } else if (chars.length % 3 === 2) { // If 2 extra dashes, use en dash for last 2; em dashes for rest
                            enCount = 1;
                            emCount = (chars.length - 2) / 3;
                        } else { // Use en dashes for last 4 hyphens; em dashes for rest
                            enCount = 2;
                            emCount = (chars.length - 4) / 3;
                        }
                        return "\u2014".repeat(emCount) + "\u2013".repeat(enCount);
                    })));
        } else {
            block.appendChild(text(m));
        }
        return true;
    } else {
        return false;
    }
};

// Parse a newline.  If it was preceded by two spaces, return a hard
// line break; otherwise a soft line break.