test more kinds of comments

Author: PgBiel

tests/comments.bib

@@ -1,10 +1,27 @@
+@comment{thisdoesntmatter,
+  does={not matter},
+}
+
+@Comment{thisisalsoignored,
+  ignored={},
+  does={
+}
+
+ignored{ignored,
+  this={is ignored},
+}
+invalid{}
+
+hello world!
+
 % Comments before the entry works
 @book{mcelreath2007mathematical,
   title={Mathematical models of social evolution: A guide for the perplexed},
   author={McElreath, Richard and Boyd, Robert},
   year={2007},
   publisher={University of Chicago Press},
-  address={Chicago}
+  address={Chicago},
+  unknowneditorzzz={this is a comment},
 }
 
 @article{fischer2022equivalence,