Always remove manga title from if it prefixes chapter names (related to #6913)

app/src/main/java/eu/kanade/tachiyomi/App.kt

@@ -159,8 +159,10 @@ open class App : Application(), DefaultLifecycleObserver, ImageLoaderFactory {
                 // Override the value passed as X-Requested-With in WebView requests
                 val stackTrace = Looper.getMainLooper().thread.stackTrace
                 val chromiumElement = stackTrace.find {
-                    it.className.equals("org.chromium.base.BuildInfo",
-                        ignoreCase = true)
+                    it.className.equals(
+                        "org.chromium.base.BuildInfo",
+                        ignoreCase = true,
+                    )
                 }
                 if (chromiumElement?.methodName.equals("getAll", ignoreCase = true)) {
                     return WebViewUtil.SPOOF_PACKAGE_NAME

app/src/main/java/eu/kanade/tachiyomi/source/LocalSource.kt

@@ -218,7 +218,6 @@ class LocalSource(private val context: Context) : CatalogueSource, UnmeteredSour
                         }
                     }
 
-                    name = getCleanChapterTitle(name)
                     ChapterRecognition.parseChapterNumber(this, sManga)
                 }
             }
@@ -234,13 +233,6 @@ class LocalSource(private val context: Context) : CatalogueSource, UnmeteredSour
 
     override suspend fun getPageList(chapter: ChapterInfo) = throw Exception("Unused")
 
-    /**
-     * Trim whitespace/delimiter characters from chapter names.
-     */
-    private fun getCleanChapterTitle(chapterName: String): String {
-        return chapterName.trim(*WHITESPACE_CHARS.toCharArray(), '-', '_', ',', ':')
-    }
-
     private fun isSupportedFile(extension: String): Boolean {
         return extension.lowercase() in SUPPORTED_ARCHIVE_TYPES
     }
@@ -326,32 +318,3 @@ class LocalSource(private val context: Context) : CatalogueSource, UnmeteredSour
 }
 
 private val SUPPORTED_ARCHIVE_TYPES = listOf("zip", "cbz", "rar", "cbr", "epub")
-
-private val WHITESPACE_CHARS = arrayOf(
-    ' ',
-    '\u0009',
-    '\u000A',
-    '\u000B',
-    '\u000C',
-    '\u000D',
-    '\u0020',
-    '\u0085',
-    '\u00A0',
-    '\u1680',
-    '\u2000',
-    '\u2001',
-    '\u2002',
-    '\u2003',
-    '\u2004',
-    '\u2005',
-    '\u2006',
-    '\u2007',
-    '\u2008',
-    '\u2009',
-    '\u200A',
-    '\u2028',
-    '\u2029',
-    '\u202F',
-    '\u205F',
-    '\u3000',
-)

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaController.kt

@@ -901,7 +901,7 @@ class MangaController :
         chaptersHeader.setNumChapters(chapters.size)
 
         val adapter = chaptersAdapter ?: return
-        adapter.updateDataSet(chapters)
+        adapter.updateDataSet(presenter.cleanChapterNames(chapters))
 
         if (selectedChapters.isNotEmpty()) {
             adapter.clearSelection() // we need to start from a clean state, index may have changed

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaPresenter.kt

@@ -431,6 +431,17 @@ class MangaPresenter(
         }
     }
 
+    fun cleanChapterNames(chapters: List<ChapterItem>): List<ChapterItem> {
+        chapters.forEach {
+            it.name = it.name
+                .trim()
+                .removePrefix(manga.title)
+                .trim(*CHAPTER_TRIM_CHARS)
+        }
+
+        return chapters
+    }
+
     /**
      * Updates the UI after applying the filters.
      */
@@ -852,3 +863,38 @@ class MangaPresenter(
 
     // Track sheet - end
 }
+
+private val CHAPTER_TRIM_CHARS = arrayOf(
+    // Whitespace
+    ' ',
+    '\u0009',
+    '\u000A',
+    '\u000B',
+    '\u000C',
+    '\u000D',
+    '\u0020',
+    '\u0085',
+    '\u00A0',
+    '\u1680',
+    '\u2000',
+    '\u2001',
+    '\u2002',
+    '\u2003',
+    '\u2004',
+    '\u2005',
+    '\u2006',
+    '\u2007',
+    '\u2008',
+    '\u2009',
+    '\u200A',
+    '\u2028',
+    '\u2029',
+    '\u202F',
+    '\u205F',
+    '\u3000',
+    // Separators
+    '-',
+    '_',
+    ',',
+    ':',
+).toCharArray()