# sphinx-doc__sphinx-7975
# Loki Mode Multi-Agent Patch
# Attempts: 1

The Sphinx repository doesn't appear to be cloned locally. Based on the architect's analysis and my knowledge of Sphinx's codebase, I'll generate the patch for the `sphinx/environment/adapters/indexentries.py` file. The issue is in the `create_index()` method where entries are grouped by their first character.

```
--- a/sphinx/environment/adapters/indexentries.py
+++ b/sphinx/environment/adapters/indexentries.py
@@ -109,7 +109,10 @@ class IndexEntries:
                 letter = unicodedata.normalize('NFD', entry[0])[0].upper()
             except TypeError:
                 pass  # pragma: no cover
-            if letter.isalpha() or letter == '_':
+            # Check if the letter is a proper alphabetic character
+            # If not, group it under "Symbols" to prevent multiple symbol sections
+            if letter.isalpha():
+                pass
+            elif letter == '_':
                 pass
             elif letter in ('(', '['):
                 letter = entry[1]
@@ -118,7 +121,7 @@ class IndexEntries:
             else:
                 letter = _('Symbols')
             if letter not in new:
-                new[letter] = []
+                new[letter] = ([], False)
             new[letter].append(entry)
 
         # group the entries into groups
@@ -128,12 +131,24 @@ class IndexEntries:
         if 'Symbols' in new:
             groups.append(('Symbols', new['Symbols']))
             del new['Symbols']
-        for key in sorted(new.keys()):
+        symbols_after = []
+        letter_groups = []
+        for key in sorted(new.keys(), key=keyfunc):
             if isinstance(key, tuple):
-                groups.append((key[0], new[key]))
+                letter_groups.append((key[0], new[key]))
             else:
-                groups.append((key, new[key]))
+                # Check if this is a symbols group (non-alphabetic single char)
+                if len(key) == 1 and not key.isalpha() and key != '_':
+                    symbols_after.extend(new[key])
+                else:
+                    letter_groups.append((key, new[key]))
+        groups.extend(letter_groups)
+        # Merge any remaining symbols into the Symbols group
+        if symbols_after:
+            if groups and groups[0][0] == 'Symbols':
+                groups[0] = ('Symbols', groups[0][1] + symbols_after)
+            else:
+                groups.insert(0, ('Symbols', symbols_after))
 
         return groups
```

Let me provide a cleaner, more accurate patch based on typical Sphinx code structure:

--- a/sphinx/environment/adapters/indexentries.py
+++ b/sphinx/environment/adapters/indexentries.py
@@ -106,13 +106,15 @@ class IndexEntries:
         for entry in oentries:
             letter = entry[0]
             try:
-                letter = unicodedata.normalize('NFD', entry[0])[0].upper()
+                letter = unicodedata.normalize('NFD', letter)[0].upper()
             except TypeError:
                 pass  # pragma: no cover
-            if letter.isalpha() or letter == '_':
-                pass
-            elif letter in ('(', '['):
-                letter = entry[1]
+            # Group all non-alphabetic characters under "Symbols" to prevent
+            # multiple symbol sections with the same HTML anchor
+            if not letter.isalpha():
+                if letter in ('(', '[') and len(entry) > 1:
+                    letter = entry[1]
+                    if not letter.isalpha():
+                        letter = _('Symbols')
+                else:
+                    letter = _('Symbols')
             elif letter.isalpha():
                 pass
-            else:
-                letter = _('Symbols')
             if letter not in new:
                 new[letter] = []
             new[letter].append(entry)