Use range indexer in SubstringAfter (#941)

Copilot · Tyrrrz · web-flow · commit 062d1cca7288 · 2026-02-27T13:15:01.000+02:00
Co-authored-by: Tyrrrz &lt;1935960+Tyrrrz@users.noreply.github.com&gt;
Co-authored-by: copilot-swe-agent[bot] &lt;198982749+Copilot@users.noreply.github.com&gt;
diff --git a/YoutubeExplode/Utils/Extensions/StringExtensions.cs b/YoutubeExplode/Utils/Extensions/StringExtensions.cs
@@ -25,10 +25,7 @@ public string SubstringAfter(
         )
         {
             var index = str.IndexOf(sub, comparison);
-
-            return index < 0
-                ? string.Empty
-                : str.Substring(index + sub.Length, str.Length - index - sub.Length);
+            return index < 0 ? string.Empty : str[(index + sub.Length)..];
         }
 
         public string StripNonDigit()

Original file line number	Diff line number	Diff line change
`@@ -25,10 +25,7 @@ public string SubstringAfter(`
`25`	`25`	`)`
`26`	`26`	`{`
`27`	`27`	`var index = str.IndexOf(sub, comparison);`
`28`		`-`
`29`		`- return index < 0`
`30`		`- ? string.Empty`
`31`		`- : str.Substring(index + sub.Length, str.Length - index - sub.Length);`
	`28`	`+ return index < 0 ? string.Empty : str[(index + sub.Length)..];`
`32`	`29`	`}`
`33`	`30`
`34`	`31`	`public string StripNonDigit()`