diff --git a/examples/app.js b/examples/app.js
index f699c5e..4c8c3e6 100644
--- a/examples/app.js
+++ b/examples/app.js
@@ -33,10 +33,11 @@ document.onreadystatechange = function () {
 		},
 		rhs: function(setValue) {
 			setValue(macbeth.join('\n')
-				.replace(/serpent/g, 'pencil'));
+				.replace(/\brain\b/g, 'sleet')
+				.replace(/\bfog\b/g, 'smog'));
 				//.replace(/heart/g, 'head'));
 		},
-		_debug: 'scroll,debug,event'
+		_debug: ''
 		// _debug: 'draw,change,event'
 	});
 
diff --git a/src/diff-view.js b/src/diff-view.js
index d0ffef0..92cfeba 100644
--- a/src/diff-view.js
+++ b/src/diff-view.js
@@ -668,11 +668,9 @@ CodeMirrorDiffView.prototype.bind = function(el) {
 				if (this._current_diff >= 0) {
 					const current = this.changes[this._current_diff];
 					for (let i = current['lhs-line-from']; i <= current['lhs-line-to']; ++i) {
-						console.log('remove gutter lhs', i);
 						this.editor.lhs.removeLineClass(i, 'gutter');
 					}
 					for (let i = current['rhs-line-from']; i <= current['rhs-line-to']; ++i) {
-						console.log('remove gutter rhs', i);
 						this.editor.rhs.removeLineClass(i, 'gutter');
 					}
 				}
@@ -1204,7 +1202,9 @@ CodeMirrorDiffView.prototype._markupLineChanges = function (changes) {
 			});
 		}
 
-		if (lineDiff && (lhsInView || rhsInView)) {
+		if (lineDiff
+			&& (lhsInView || rhsInView)
+			&& change.op === 'c') {
 			vdoc.addInlineDiff(change, {
 				getText: (side, lineNum) => {
 					if (side === 'lhs') {
diff --git a/src/lcs.js b/src/lcs.js
index c3cc631..a8fa9b4 100644
--- a/src/lcs.js
+++ b/src/lcs.js
@@ -59,7 +59,6 @@ LCS.prototype.diff = function (added, removed) {
 		ignoreaccents: !!this.options.ignoreaccents
 	});
 	const changes = DiffParser(d.normal_form());
-	console.log(changes);
 	for (let i = 0; i < changes.length; ++i) {
 		const change = changes[i];
 		if (this.options.ignorews) {
diff --git a/src/vdoc.js b/src/vdoc.js
index abcce71..d2cabec 100644
--- a/src/vdoc.js
+++ b/src/vdoc.js
@@ -54,7 +54,7 @@ class VDoc {
 			// FIXME: need lineDiff here?
 		} else {
 			// apply change for each line in-between the changed lines
-			for (let j = lf; j <= lt; ++j) {
+			for (let j = lf, k = olf; j <= lt; ++j, ++k) {
 				this._getLine(side, j).addLineClass('background', bgClass.join(' '));
 
 				if (!lineDiff) {
@@ -64,7 +64,7 @@ class VDoc {
 
 				if (side === 'lhs'
 					&& (change.op === 'd'
-						|| (change.op === 'c' && j > olt)
+						|| (change.op === 'c' && k > olt)
 					)) {
 					// mark entire line text with deleted (strikeout) if the
 					// change is a delete, or if it is changed text and the
@@ -72,7 +72,7 @@ class VDoc {
 					this._getLine(side, j).markText(0, undefined, 'mergely ch d lhs');
 				} else if (side == 'rhs'
 					&& (change.op === 'a'
-						|| (change.op === 'c' && j > olt)
+						|| (change.op === 'c' && k > olt)
 					)) {
 					// mark entire line text with added if the change is an
 					// add, or if it is changed text and the line goes past the
@@ -116,12 +116,10 @@ class VDoc {
 				// too many lines here. it's no more than the viewport.
 				lcs.diff(
 					function _added(from, to) {
-						console.log('added', {from, to});
 						const line = vdoc._getLine('rhs', k);
 						line.markText(from, to, 'mergely ch a rhs');
 					},
 					function _removed(from, to) {
-						console.log('removed', {from, to});
 						const line = vdoc._getLine('lhs', j);
 						line.markText(from, to, 'mergely ch d lhs');
 					}