StackOverflow user recommends Code Review
Unfortunately, this question would be off-topic on CodeReview, see [the migration guide](https://codereview.meta.stackexchange.com/a/5778/21002) or [the on-topic section](https://codereview.stackexchange.com/help/on-topic)
Unfortunately, this question would be off-topic ...
Counter idea: Run a meta contest for a 30 word or less mini-requirement statement.
The "Welcome modal for new askers" s too wordy IMO.
We all have ideas of what new users need to read.
It can't be long (few read it) nor too short (uninformative).
My comments per your short list
Ensure that you are the author/maintainer of the code
Authorship is ...
I don't think linking directly to the guide to posting is a good idea.
It's fairly verbose, it's quite literally a wall of text. Whilst this is undoubtebly good for people that want to get the most out of their post it's just going to make the average Joe run.
It doesn't actually tell the user anything that is off-topic. The link only contains site policy ...
I see 2 questions:
Is Jupyter reviewable?
Is linkrot a dealbreaker?
Jupyter is basically annotated Python. A global script cut in pieces.
The link can stay as additional context, but anything not embedded in the question itself is not reviewable. With a Jupyter notebook, this means essential parts of the code are missing in the question ...
Getting it reviewed
There are three ways an OP can get the code in the question. These are:
Manually copy the code
As shown in the linked question, manually copying some of the notebook over to a Code Review question is acceptable and can produce an ok question.
Save the history as a plain old Python file
A Jupyter notebook is just an IPython shell.
Unification is great! But we don't need a new tag for that.
All questions mentioning a language by name:
Yes, this only covers less than half of the questions you list. Honestly, I think those are among the most important questions of your list.
Especially specific-language really sounds like it was made for (among others)...
We should tag them with scopelanguage-scope
Note: In case it's not been clear we're talking about Meta tags.
It should be noted that Mast's answer is in agreement with the groupings in the question. If the language-scope tag is added it would incorporate Mast's suggestion. It seems my explanation on why specific-language only fits on 11/28 questions was ...
I agree with Peilonrayz' answer.
Another thing you can consider is to comment on the answers in an effort to discourage answers to off-topic questions.
I have seen the comments below and added them to my forked list of auto-comments - feel free to use them if you use the auto-comments:
[A] don't answer off-topic questions
Please note, questions ...
Firstly if you think a question is off topic there are two very important things to do:
Put the question in the review queue.
3k+ reputation - vote to close the post.
15-3k reputation - flag the post for closure.
Comment on the post.
This allows other people to see things from your perspective.
Allowing others to see something they potentially missed ...