Fixed Open As Source Code menu item for all type of text files.

CodeEdit/Features/NavigatorArea/ProjectNavigator/OutlineView/ProjectNavigatorMenu.swift

@@ -116,14 +116,15 @@ final class ProjectNavigatorMenu: NSMenu {
             // Use UTType to distinguish between bundle file and user-browsable directory
             // The isDirectory property is not accurate on this.
             guard let type = item.contentType else { return ([.none()], []) }
+
             if type.conforms(to: .folder) {
                 return ([.none()], [])
             }
             var primaryItems = [NSMenuItem]()
-            if type.conforms(to: .sourceCode) {
-                primaryItems.append(
-                    menuItem("Source Code", action: #selector(openInSourceCode))
-                )
+
+            if type.conforms(to: .text) || checkFileIsText(for: item) {
+                primaryItems.append(menuItem("Source Code", action: #selector(openInSourceCode)))
+                primaryItems.append(.separator())
             }
             if type.conforms(to: .propertyList) {
                 primaryItems.append(.propertyList())
@@ -177,6 +178,30 @@ final class ProjectNavigatorMenu: NSMenu {
         return sourceControlMenu
     }
 
+    /// Checks if the given `CEWorkspaceFile` is a text file.
+    /// This function verifies if the content of the file can be decoded as text.
+    /// It is used as a fallback when the type identifier does not conform to the expected text type.
+    func checkFileIsText(for item: CEWorkspaceFile) -> Bool {
+        do {
+            // Read the first 512 bytes of the file.
+            let fileHandle = try FileHandle(forReadingFrom: item.url)
+            defer { fileHandle.closeFile() }
+            guard let fileData = try fileHandle.read(upToCount: 512) else { return false }
+
+            // Extreme use case: Returns true for empty files.
+            // E.g. The user hasn't typed anything on it, yet.
+            // This used for files like .env, .gitignore or files that lack an extension.
+            if fileData.isEmpty {
+                return true
+            }
+            // swiftlint:disable:next non_optional_string_data_conversion
+            return String(data: fileData, encoding: .utf8) != nil
+        } catch {
+            print("Error reading file: \(error)")
+            return false
+        }
+    }
+
     /// Updates the menu for the selected item and hides it if no item is provided.
     override func update() {
         removeAllItems()