diff --git a/doc/forum/Reverse_index_key_to_list_of_file_paths/comment_5_022728be6cd3ac168a74d16baf29c0e1._comment b/doc/forum/Reverse_index_key_to_list_of_file_paths/comment_5_022728be6cd3ac168a74d16baf29c0e1._comment
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+[[!comment format=mdwn
+ username="joey"
+ subject="""comment 5"""
+ date="2021-02-15T17:25:05Z"
+ content="""
+git grep doesn't use an index per se, but is probably faster
+than `find` at least sometimes. And probably somewhat faster than things
+involving `git-annex find` too.
+
+It's unfortunate that `git grep` doesn't search on the content of symlink
+texts, so that can't be used to find locked files.
+
+The equivilant using git-annex find, which will find both types:
+
+	git annex find --format '${key}\n' | grep SHA256E-s320029--488e29f5584ba4e474db95aa42fbb58ddb92f2a59bc0b24a91171acb4d8f4828.png
+"""]]