feat: Discard translations that are identical to the original in meta…

…data.

README.md

@@ -32,7 +32,6 @@ __Plugin Homepage__: [https://translator.bookfere.com](https://translator.bookfe
 * [Installation](https://github.com/bookfere/Ebook-Translator-Calibre-Plugin/wiki/English#installation)
 * [Usage](https://github.com/bookfere/Ebook-Translator-Calibre-Plugin/wiki/English#usage)
 * [Settings](https://github.com/bookfere/Ebook-Translator-Calibre-Plugin/wiki/English#settings)
-* [Contributing](CONTRIBUTING.md)
 
 ---
 
@@ -41,8 +40,8 @@ __Plugin Homepage__: [https://translator.bookfere.com](https://translator.bookfe
 * [GitHub ](https://github.com/bookfere/Ebook-Translator-Calibre-Plugin)
 * [MobileRead](https://www.mobileread.com/forums/showthread.php?t=353052)
 * [Release](https://github.com/bookfere/Ebook-Translator-Calibre-Plugin/releases)
+* [Contributing](CONTRIBUTING.md)
 * [Donate](https://www.paypal.com/paypalme/bookfere)
-* [Sponsor](https://github.com/bookfere/Ebook-Translator-Calibre-Plugin/wiki#sponsor)
 
 ---
 

README.zh-CN.md

@@ -31,7 +31,6 @@ __插件主页__：[https://translator.bookfere.com](https://translator.bookfere
 * [安装插件](https://github.com/bookfere/Ebook-Translator-Calibre-Plugin/wiki/简体中文#安装插件)
 * [使用方法](https://github.com/bookfere/Ebook-Translator-Calibre-Plugin/wiki/简体中文#使用方法)
 * [设置说明](https://github.com/bookfere/Ebook-Translator-Calibre-Plugin/wiki/简体中文#设置说明)
-* [贡献代码](CONTRIBUTING.md)
 
 ---
 
@@ -41,8 +40,8 @@ __插件主页__：[https://translator.bookfere.com](https://translator.bookfere
 * [MobileRead](https://www.mobileread.com/forums/showthread.php?t=353052)
 * [发布页面](https://github.com/bookfere/Ebook-Translator-Calibre-Plugin/releases)
 * [详细介绍](https://bookfere.com/post/1057.html)
+* [贡献代码](CONTRIBUTING.md)
 * [捐助页面](https://bookfere.com/donate)
-* [致谢列表](https://github.com/bookfere/Ebook-Translator-Calibre-Plugin/wiki#sponsor)
 
 ---
 

lib/element.py

@@ -145,7 +145,7 @@ def get_content(self):
         return self.element.content
 
     def add_translation(self, translation=None):
-        if translation is not None:
+        if translation is not None and translation != self.get_content():
             if self.position == 'only':
                 self.element.content = translation
             elif self.position in ['above', 'left']:

tests/test_element.py

@@ -294,6 +294,10 @@ def test_add_translation_only(self):
         self.element.add_translation('A')
         self.assertEqual('A', self.element.element.content)
 
+    def test_add_translation_same_content(self):
+        self.element.add_translation('a')
+        self.assertEqual('a', self.element.element.content)
+
 
 class TestTocElement(unittest.TestCase):
     def setUp(self):