优化

app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditAdapter.kt

@@ -18,11 +18,9 @@ class BookSourceEditAdapter : RecyclerView.Adapter<BookSourceEditAdapter.MyViewH
         }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
-        return MyViewHolder(
-            LayoutInflater.from(
-                parent.context
-            ).inflate(R.layout.item_source_edit, parent, false)
-        )
+        val view = LayoutInflater.from(parent.context)
+            .inflate(R.layout.item_source_edit, parent, false)
+        return MyViewHolder(view)
     }
 
     override fun onBindViewHolder(holder: MyViewHolder, position: Int) {

app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt

@@ -135,19 +135,14 @@ class ReplaceEditActivity :
     }
 
     private fun showHelpDialog() {
-        val items = arrayListOf("替换净化教程", "正则教程")
+        val items = arrayListOf("正则教程")
         selector(getString(R.string.help), items) { _, index ->
             when (index) {
-                0 -> showReplaceHelp()
-                1 -> showRegexHelp()
+                0 -> showRegexHelp()
             }
         }
     }
 
-    private fun showReplaceHelp() {
-
-    }
-
     private fun showRegexHelp() {
         val mdText = String(assets.open("help/regex.md").readBytes())
         TextDialog.show(supportFragmentManager, mdText, TextDialog.MD)