diff --git a/codetab.ts b/codetab.ts
index 01f8966..106e4c0 100644
--- a/codetab.ts
+++ b/codetab.ts
@@ -15,6 +15,7 @@ const state = {
 	historyDebounce: 0,
 	historyIndex: 0,
 	undo() {
+		console.log('undoing');
 		if (this.historyIndex === this.history.length && this.historyDebounce > 0) {
 			this.snapshot();
 		}
@@ -26,6 +27,7 @@ const state = {
 		}
 	},
 	redo() {
+		console.log('redoing');
 		if (this.historyIndex < this.history.length-1) {
 			this.historyIndex += 1;
 			const snap = this.history[this.historyIndex];
@@ -34,13 +36,16 @@ const state = {
 		}
 	},
 	snapshot() {
-		this.history.push({
+		const snap = {
 			code: this.code,
 			anchor: this.anchor,
 			focus: this.focus,
-		});
+		};
+		this.history.push(snap);
+		console.log('took snapshot', this.historyIndex, snap);
 	},
 	startSnapping() {
+		console.log('start snapping', this.historyIndex);
 		this.historyIndex += 1;
 		if (this.history.length > this.historyIndex) {
 			this.history.length = this.historyIndex;