fix merging issue

text_splitter/chinese_recursive_text_splitter.py

@@ -101,11 +101,12 @@ class ChineseRecursiveTextSplitter(RecursiveCharacterTextSplitter):
         
         final_chunks = [re.sub(r"\n{2,}", "\n", chunk.strip()) for chunk in final_chunks if chunk.strip()!=""]
         #将单行和两行的和下面的分块合并
+        #将单行并且字数小于25，和下面的分块合并
         return_chunks = []
         temp_sencond = ""
         for chunk in final_chunks:
             if temp_sencond =="":
-                if len(chunk.splitlines()) <= 1:
+                if len(chunk.splitlines()) <= 1 and len(chunk) <= 25:
                     temp_sencond = chunk
                 else:
                     return_chunks.append(chunk)