I will add my 2 cents worth and try to explain why it is considered off-topic. Imagine that I change your short code example into a very short HTML document, and I post the very same question on the Webmasters site.

Would it make any difference in the validity of the question? No, it would not, because the question is about emacs and not about LaTeX. The question is valid on a forum/site where you discuss emacs itself, and that it neither this site nor Webmasters.

I hope that this "parable" will help you in understanding which editor-related questions are on-topic and which are not.

I will add my 2 cents worth and try to explain why it is considered off-topic. Imagine that I change your short code example into a very short HTML document, and I post the very same question on the Webmasters site.

Would it make any difference in the validity of the question? No, it would not, because the question is about emacs and not about LaTeX. The question is valid on a forum/site where you discuss emacs itself, and that it neither this site nor Webmasters.

I hope that this "parable" will help you in understanding which editor-related questions are on-topic and which are not.