Topic on Help talk:Extension:ParserFunctions

If a page is published with the code {{#expr: 1+ }}, it will show a localizable error message in the page body. Here's an example: User:Amire80/oneplus.

Is there a way to find a list of pages that have such errors, e.g. a tracking category or a special page?

As far as I know, there is no such page at the moment.

In the Hebrew Wikipedia, the administrators changed the messages that show these errors so that they display the message and add a page to a category. It works, but it's hacky. Is there currently no other way to do it? (That is, other than modifying the code that implements {{#expr.)

Amire, you are clearly abusing your admin privilege, by administratively deleting an answer (and hiding its content in the history) that was on completely topic, and no so long as you state. It also explained what could be done for now and what may eventually be done in MediaWiki to solve such problem.

You say it was not replying the question. But what was really the question? The current lack of support in Mediawiki and the way it works and how error trackings in categories may (or may not) be done in the result of a parser function that is not supposed to return such thnig in the plain-text format (excluding MediaWiki and HTML tags) expected in return by this function.

As your question has no definitive answer for now, I explained a workaround, currently used in many templates (and their possible caveat, minor in most existing usage cases, using "#iferror"). And it was properly formatted. It's not my answer that is too long, but your question which is badly formulated, and is in fact exposing a problem, seeking for solutions or workarounds (what I did). If you don't want any opinions exposed to this case, why posting here to the public? I did not violate any rule here, but you just did it with your privileges.

I stand by what I've written in the deletion comment: Your response was very long, and it didn't answer the question. I asked a simple yes-no question that can be answered clearly and briefly, as was done in another response. If you don't understand what the question or don't have the knowledge to answer it, you don't have to write anything. I deleted your response because it could make people think that the question was answered, even though it was not.

In fact, a very large number of the responses you write on Phabricator and on discussion pages in all the wikis in which I saw you writing are too long and off-topic, and I'm really not the only person who openly complains about that.

Seeking for solutions (this was clearly not "a yes-no question") and discussing them (because you instantly replied "no" to your question, without discussing possible solutions) appropriately is on topic, and does not justify at all your administrative deletion. You've abused your rights.

I keep track of these errors using simple search: .

And yes, we have Manual:Tracking categories, but we definitely don't track all errors. Something needs to be changed in the code.

I suggested (in the message abusively deleted by Amire80) to implement some code in MediaWiki to allow a parser function to post error tracking messages in an alternate "stream", not returned in the single string by the function call, but that would be generated after the main content. For now there's no easy way to correctly implement error tracking in parser functions like "#expr:", and that would not cause further problems to the parsing (it can potentially break the page layout or HTML syntax). Amire80 thinks it is "out of topic", but this is not. The pseudo solution he gave above is not one (described by himself as "hacky", so it was explicitly seeking for better solutions), so for now we use workarounds (like "#iferror:" in templates, to detect errors in expressions, because there's still no other way to do that without modifying the wikicode of pages using "#expr:").