[fix] query highlight fix

searx/engines/__init__.py

@@ -112,12 +112,14 @@ def highlight_content(content, query):
         query_regex = '({0})'.format(re.escape(query))
         content = re.sub(query_regex, '<b>\\1</b>', content, flags=re.I)
     else:
+        regex_parts = []
         for chunk in query.split():
             if len(chunk) == 1:
-                query_regex = '(\W+{0}\W+)'.format(re.escape(chunk))
+                regex_parts.append('\W+{0}\W+'.format(re.escape(chunk)))
             else:
-                query_regex = '({0})'.format(re.escape(chunk))
-            content = re.sub(query_regex, '<b>\\1</b>', content, flags=re.I)
+                regex_parts.append('{0}'.format(re.escape(chunk)))
+        query_regex = '({0})'.format('|'.join(regex_parts))
+        content = re.sub(query_regex, '<b>\\1</b>', content, flags=re.I)
 
     return content