Oops, I tried to get too cute 🤦‍♂️

davidwengier · davidwengier · commit 4816433ea509 · 2025-10-31T13:15:07.000+11:00
diff --git a/src/Razor/src/Microsoft.CodeAnalysis.Razor.Workspaces/TextDifferencing/SourceTextDiffer.TextSpanDiffer.cs b/src/Razor/src/Microsoft.CodeAnalysis.Razor.Workspaces/TextDifferencing/SourceTextDiffer.TextSpanDiffer.cs
@@ -28,18 +28,18 @@ public TextSpanDiffer(SourceText oldText, SourceText newText)
             _newLineBuffer = RentArray(1024);
             _appendBuffer = RentArray(1024);
 
-            OldSourceLength = _oldLines.Length;
-            NewSourceLength = _newLines.Length;
-
-            if (OldSourceLength > 0)
+            if (oldText.Length > 0)
             {
                 _oldLines = Tokenize(oldText);
             }
 
-            if (NewSourceLength > 0)
+            if (newText.Length > 0)
             {
                 _newLines = Tokenize(newText);
             }
+
+            OldSourceLength = _oldLines.Length;
+            NewSourceLength = _newLines.Length;
         }
 
         protected abstract ImmutableArray<TextSpan> Tokenize(SourceText text);

Original file line number	Diff line number	Diff line change
`@@ -28,18 +28,18 @@ public TextSpanDiffer(SourceText oldText, SourceText newText)`
`28`	`28`	`_newLineBuffer = RentArray(1024);`
`29`	`29`	`_appendBuffer = RentArray(1024);`
`30`	`30`
`31`		`- OldSourceLength = _oldLines.Length;`
`32`		`- NewSourceLength = _newLines.Length;`
`33`		`-`
`34`		`- if (OldSourceLength > 0)`
	`31`	`+ if (oldText.Length > 0)`
`35`	`32`	`{`
`36`	`33`	`_oldLines = Tokenize(oldText);`
`37`	`34`	`}`
`38`	`35`
`39`		`- if (NewSourceLength > 0)`
	`36`	`+ if (newText.Length > 0)`
`40`	`37`	`{`
`41`	`38`	`_newLines = Tokenize(newText);`
`42`	`39`	`}`
	`40`	`+`
	`41`	`+ OldSourceLength = _oldLines.Length;`
	`42`	`+ NewSourceLength = _newLines.Length;`
`43`	`43`	`}`
`44`	`44`
`45`	`45`	`protected abstract ImmutableArray<TextSpan> Tokenize(SourceText text);`