Function flattenOnce

src/scripts/highlighting/textHighlighter.js:662–699

()

        sortByDepth(highlights, true);

        function flattenOnce() {
            var again = false;

            highlights.forEach(function (hl, i) {
                var parent = hl.parentElement,
                    parentPrev = parent.previousSibling,
                    parentNext = parent.nextSibling;

                if (self.isHighlight(parent)) {

                    if (!haveSameColor(parent, hl)) {

                        if (!hl.nextSibling) {
                            dom(hl).insertBefore(parentNext || parent);
                            again = true;
                        }

                        if (!hl.previousSibling) {
                            dom(hl).insertAfter(parentPrev || parent);
                            again = true;
                        }

                        if (!parent.hasChildNodes()) {
                            dom(parent).remove();
                        }

                    } else {
                        parent.replaceChild(hl.firstChild, hl);
                        highlights[i] = parent;
                        again = true;
                    }

                }

            });

            return again;
        }

        do {
            again = flattenOnce();