From 8c7e6cc98347fe1a1e6f1cb650e9b48cadf07f8a Mon Sep 17 00:00:00 2001
From: capric98 <42015599+capric98@users.noreply.github.com>
Date: Fri, 15 Apr 2022 20:14:09 +0800
Subject: [PATCH] [fix] FutureWarning from lxml

Just in case if content is None, the original code will skip extract_text(), and
just append the None value to 'content'. So just add allow_none=True, and this
will return None without raising a ValueError in extract_text().
---
 searx/engines/yahoo.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/searx/engines/yahoo.py b/searx/engines/yahoo.py
index 6bf1932e4..c13ce6d78 100644
--- a/searx/engines/yahoo.py
+++ b/searx/engines/yahoo.py
@@ -142,8 +142,7 @@ def response(resp):
         title = extract_text(title)[offset:]
 
         content = eval_xpath_getindex(result, './/div[contains(@class, "compText")]', 0, default='')
-        if content:
-            content = extract_text(content)
+        content = extract_text(content, allow_none=True)
 
         # append result
         results.append({'url': url, 'title': title, 'content': content})