I see some questions (but mostly answers) that mention tags. For example I could mention the burrito tag here.
Is there a way I could search for posts that have mentioned a particular tag?
For cases where you're on a child meta site (e.g. Meta Stack Overflow) and you want to search for posts mentioning a main site tag, you can just search for e.g.
url:https://stackoverflow.com/questions/tagged/exception, as I mentioned in this answer.
That doesn't work for Meta Stack Exchange, cases where the
[tag:] syntax is used on a main site, or where
[meta-tag:] is used on a child meta site. Searching for
url:https://meta.stackexchange.com/questions/tagged/burrito will find my answer (because I literally mention the link) but fail to find your question. However, there's a neat trick for this: you can search for
It will find posts where people directly linked to the tag page as well; I don't think those can be filtered out easily. You can use other search options to e.g. limit the search results to questions only with
The obvious way, searching for the full URL with
url:https://meta.stackexchange.com/questions/tagged/burrito doesn't work in this particular case, because the
[tag:burrito] element is rendered as
<a href="/questions/tagged/burrito" class="post-tag" title="show questions tagged 'burrito'" rel="tag">burrito</a>, which uses a relative URL.