cd: Error if html in file test 2

Jenkinsfile

@@ -6,20 +6,26 @@ pipeline {
             steps {
                 // Search for occurrences of "<filename>.html"
                 script {
-                    def fileExists = false
+                    def fileError = false
 
-                    // Find files with "<filename>.html" occurrences
-                    def affectedFiles = sh returnStdout: true, script: 'grep -rl ".html" ./*.html'
-                    // Trim
-                    affectedFiles = affectedFiles.trim()
+                    def allFiles = sh returnStdout: true, script: 'find . -type f -name "*.html" -print0 | xargs -0 grep -l ".html"'
+                    
+                    // For each file, check if it contains "<filename>.html"
+                    allFiles.eachLine { file ->
+                        def filename = file.split("/").last()
+                        def filenameWithoutExtension = filename.split("\\.").first()
 
+                        // If the file contains "<filename>.html", set fileError to true
+                        if (file.contains(filenameWithoutExtension + ".html")) {
+                            fileError = true
+                        }
+                    }
                     // If affectedFiles is not empty, set fileExists to true
                     if (affectedFiles) {
                         fileExists = true
                     }
-
                     // Fail the build and display the affected files
-                    if (fileExists) {
+                    if (fileError) {
                         error("Error: Found occurrences of 'filename.html' in the following files:\n${affectedFiles}")
                     }
                 }