In order for me to solve a tag migration problem, I have to compare between two character columns and assess whether there are coincidences between both columns or not.

To sum up, given a dataframe like this:

```
old_tags            new_tags
burger              burger, american
italian, pizza      italian
latin, peruvian     peruvian, latin
french              pizza

```

I'd like to add a third column like this one:

```
old_tags            new_tags            match
burger              burger, american    TRUE
italian, pizza      italian             TRUE
latin, peruvian     peruvian, latin     TRUE
french              pizza               FALSE

```

Until now I've unsuccessfully tried with functions such as `str_match`, `str_detect` and so on. It usually returns me `FALSE` when comparing pairs of strings that should be actually `TRUE` such the example I've put in `[3,]`.

Thanks a lot in advance.