Edit book: Insert hyperlinks: When sorting anchors on elements without any text content, use the anchor itself

recipes/india_legal_magazine.recipe

@@ -14,12 +14,22 @@ class IndiaLegalLive(BasicNewsRecipe):
     no_stylesheets = True
     remove_attributes = ['style', 'height', 'width']
 
+    masthead_url = 'https://d2r2ijn7njrktv.cloudfront.net/IL/uploads/2020/12/03181846/india-legal-live-logo-218x73-1.png'
+
+    def get_cover_url(self):
+        soup = self.index_to_soup('https://www.indialegallive.com/')
+        for citem in soup.findAll('img', src=lambda s: s and s.endswith('shot.jpg')):
+            return citem['src']
+
     keep_only_tags = [
         dict(name='h1'),
         classes(
             'tdb_single_subtitle tdb_single_date tdb_single_featured_image tdb_single_content'
         ),
     ]
+    remove_tags = [
+        dict(name='div', attrs={'style':'position:absolute;top:0;left:-9999px;'}),
+    ]
 
     feeds = [
         ('Courts', 'https://www.indialegallive.com/constitutional-law-news/courts-news/rss'),

src/calibre/gui2/tweak_book/widgets.py

@@ -733,9 +733,9 @@ def populate_anchors(self, name):
                 frag = item.get('id', None) or item.get('name')
                 if not frag:
                     continue
-                text = lead_text(item, num_words=4)
+                text = lead_text(item, num_words=4).strip()
                 ac.append((text, frag))
-            ac.sort(key=lambda text_frag: numeric_sort_key(text_frag[0]))
+            ac.sort(key=lambda text_frag: numeric_sort_key(text_frag[0] or text_frag[1]))
         self.anchor_names.model().set_names(self.anchor_cache[name])
         self.update_target()