[mod] Retain page numbers even when there are no results

searx/results.py

@@ -232,7 +232,7 @@ class ResultContainer:
         if engine_name in engines:
             histogram_observe(standard_result_count, 'engine', engine_name, 'result', 'count')
 
-        if not self.paging and standard_result_count > 0 and engine_name in engines and engines[engine_name].paging:
+        if not self.paging and engine_name in engines and engines[engine_name].paging:
             self.paging = True
 
     def _merge_infobox(self, infobox):

searx/templates/simple/results.html

@@ -124,6 +124,7 @@
                 </div>
             </form>
         {% endif %}
+        {%- if results | count > 0 -%}
           <form method="{{ method or 'POST' }}" action="{{ url_for('search') }}" class="next_page">
               <div class="{% if rtl %}left{% else %}right{% endif %}">
                 <input type="hidden" name="q" value="{{ q|e }}" >
@@ -140,6 +141,7 @@
                 <button role="link"  type="submit">{{ _('Next page') }} {{ icon_small('chevron-right') }}</button>
               </div>
           </form>
+        {%- endif -%}
         {% set pstart = 1 %}
         {% set pend = 11 %}
         {% if pageno > 5 %}