diff -r ffa28e2155bb -r 69623c62aa34 src/goodjava/util/LineDiff.java
--- a/src/goodjava/util/LineDiff.java	Sun May 12 15:25:29 2024 -0600
+++ b/src/goodjava/util/LineDiff.java	Sun May 12 15:58:30 2024 -0600
@@ -16,10 +16,10 @@
 		public final int line;
 		public final String text;
 
-		private Diff(char operation,int line,String text) {
+		private Diff(char operation,String[] lines,int i) {
 			this.operation = operation;
-			this.line = line;
-			this.text = text;
+			this.line = i+1;
+			this.text = lines[i];
 		}
 	}
 
@@ -67,22 +67,18 @@
 				iOld++;
 				iNew++;
 			} else if (opt[iOld+1][iNew] >= opt[iOld][iNew+1]) {
-				diffs.add( new Diff( DELETE, iOld+1, oldLines[iOld] ) );
-				iOld++;
+				diffs.add( new Diff( DELETE, oldLines, iOld++ ) );
 			} else {
- 				diffs.add( new Diff( INSERT, iOld+1, newLines[iNew] ) );
-				iNew++;
+ 				diffs.add( new Diff( INSERT, newLines, iNew++ ) );
 			}
 		}
 
 		// dump out one remainder of one string if the other is exhausted
 		while( iOld < nOld ) {
-			diffs.add( new Diff( DELETE, iOld+1, oldLines[iOld] ) );
-			iOld++;
+			diffs.add( new Diff( DELETE, oldLines, iOld++ ) );
 		}
 		while( iNew < nNew ) {
-			diffs.add( new Diff( INSERT, nOld+1, newLines[iNew] ) );
-			iNew++;
+			diffs.add( new Diff( INSERT, newLines, iNew++ ) );
 		}
 
 		return diffs;