Add mention keyword

novelwriter/core/index.py

@@ -487,13 +487,14 @@ class NWIndex:
         if nBits == 0:
             return []
 
-        # Check that the key is valid
-        isGood[0] = tBits[0] in nwKeyWords.VALID_KEYS
+        # Check that the keyword is valid
+        kBit = tBits[0]
+        isGood[0] = kBit in nwKeyWords.VALID_KEYS
         if not isGood[0] or nBits == 1:
             return isGood
 
         # For a tag, only the first value is accepted, the rest are ignored
-        if tBits[0] == nwKeyWords.TAG_KEY and nBits > 1:
+        if kBit == nwKeyWords.TAG_KEY and nBits > 1:
             check, _ = self.parseValue(tBits[1])
             if check in self._tagsIndex:
                 isGood[1] = self._tagsIndex.tagHandle(check) == tHandle
@@ -501,12 +502,16 @@ class NWIndex:
                 isGood[1] = True
             return isGood
 
+        if kBit == nwKeyWords.MENTION_KEY and nBits > 1:
+            isGood[1:nBits] = [aBit in self._tagsIndex for aBit in tBits[1:nBits]]
+            return isGood
+
         # If we're still here, we check that the references exist
         # Class references cannot have the | symbol in them
-        refKey = nwKeyWords.KEY_CLASS[tBits[0]].name
-        for n in range(1, nBits):
-            if (aBit := tBits[n]) in self._tagsIndex:
-                isGood[n] = self._tagsIndex.tagClass(aBit) == refKey and "|" not in aBit
+        if rClass := nwKeyWords.KEY_CLASS.get(kBit):
+            for n in range(1, nBits):
+                if (aBit := tBits[n]) in self._tagsIndex:
+                    isGood[n] = self._tagsIndex.tagClass(aBit) == rClass.name and "|" not in aBit
 
         return isGood