优化

app/src/main/java/io/legado/app/data/entities/BookChapter.kt

@@ -80,7 +80,6 @@ data class BookChapter(
         chineseConvert: Boolean = true,
     ): String {
         var displayTitle = title.replace(AppPattern.rnRegex, "")
-        val mDisplayTitle = displayTitle
         if (chineseConvert) {
             when (AppConfig.chineseConverterType) {
                 1 -> displayTitle = ChineseUtils.t2s(displayTitle)
@@ -91,18 +90,20 @@ data class BookChapter(
             replaceRules.forEach { item ->
                 if (item.pattern.isNotEmpty()) {
                     try {
-                        displayTitle = if (item.isRegex) {
+                        val mDisplayTitle = if (item.isRegex) {
                             displayTitle.replace(item.pattern.toRegex(), item.replacement)
                         } else {
                             displayTitle.replace(item.pattern, item.replacement)
                         }
+                        if (mDisplayTitle.isNotBlank()) {
+                            displayTitle = mDisplayTitle
+                        }
                     } catch (e: Exception) {
                         appCtx.toastOnUi("${item.name}替换出错")
                     }
                 }
             }
         }
-        if (displayTitle.isBlank()) displayTitle = mDisplayTitle
         return when {
             !isVip -> displayTitle
             isPay -> appCtx.getString(R.string.payed_title, displayTitle)