Use LCOV exclusion markers for coverage filter

Author: 1998code

.github/scripts/filter_lcov.rb

@@ -12,20 +12,20 @@ def ignored_lines_for(source_path)
   File.readlines(source_path).each_with_index do |line, index|
     line_number = index + 1
 
-    if line.include?("coverage:ignore-line")
+    if line.include?("coverage:ignore-line") || line.include?("LCOV_EXCL_LINE")
       ignored << line_number
       next
     end
 
-    if line.include?("coverage:ignore-start")
+    if line.include?("coverage:ignore-start") || line.include?("LCOV_EXCL_START")
       active = true
       ignored << line_number
       next
     end
 
     ignored << line_number if active
 
-    active = false if line.include?("coverage:ignore-end")
+    active = false if line.include?("coverage:ignore-end") || line.include?("LCOV_EXCL_STOP")
   end
 
   ignored

Sources/SwiftNEW/Styles/MeshView.swift

@@ -14,9 +14,9 @@ struct MeshView: View {
         #if compiler(>=6.0)
         if #available(iOS 18.0, macOS 15.0, visionOS 2.0, tvOS 18.0, *) {
             meshGradient
-        } else { // coverage:ignore-start -- Xcode 26 coverage runner cannot execute older OS mesh fallback.
+        } else { // LCOV_EXCL_START -- Xcode 26 coverage runner cannot execute older OS mesh fallback.
             fallbackGradient
-        } // coverage:ignore-end
+        } // LCOV_EXCL_STOP
         #else
         fallbackGradient
         #endif

Sources/SwiftNEW/Views/SwiftNEW+View.swift

@@ -151,7 +151,7 @@ private struct SheetBackdropModifier: ViewModifier {
             } else {
                 content.presentationBackground(.thinMaterial)
             }
-        } else { // coverage:ignore-start -- Xcode 26 coverage runner cannot execute older OS sheet fallback.
+        } else { // LCOV_EXCL_START -- Xcode 26 coverage runner cannot execute older OS sheet fallback.
             // Older OS / embed: fall back to a full-bleed background.
             if mesh {
                 content.background {
@@ -160,7 +160,7 @@ private struct SheetBackdropModifier: ViewModifier {
             } else {
                 content.background(.ultraThinMaterial, ignoresSafeAreaEdges: .all)
             }
-        } // coverage:ignore-end
+        } // LCOV_EXCL_STOP
     }
 }