1 files changed, 38 insertions, 0 deletions
diff --git a/ext/js/language/ru/russian-text-preprocessors.js b/ext/js/language/ru/russian-text-preprocessors.js
new file mode 100644
index 00000000..fc4472e9
--- /dev/null
+++ b/ext/js/language/ru/russian-text-preprocessors.js
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2024  Yomitan Authors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import {basicTextPreprocessorOptions} from '../text-preprocessors.js';
+
+/** @type {import('language').TextPreprocessor<boolean>} */
+export const removeRussianDiacritics = {
+    name: 'Remove diacritics',
+    description: 'A\u0301 → A, a\u0301 → a',
+    options: basicTextPreprocessorOptions,
+    process: (str, setting) => {
+        return setting ? str.replace(/\u0301/g, '') : str;
+    }
+};
+
+/** @type {import('language').TextPreprocessor<boolean>} */
+export const yoToE = {
+    name: 'Yo to E',
+    description: 'ё → е, Ё → Е',
+    options: basicTextPreprocessorOptions,
+    process: (str, setting) => {
+        return setting ? str.replace(/ё/g, 'е').replace(/Ё/g, 'Е') : str;
+    }
+};