[DevHub] Inaccurate description of logic for `is_single()`

[crstauf]

Reported by terrylin via User Contributed Notes.

Issue Description

The “More Information” section mentions:
It is possible for $is_page and $is_attachment to be true at the same time.

This must be a mistake. As far as I know, it is impossible for $is_page and $is_attachment to be true at the same time.

I have carefully checked the parse_query method in class-wp-query.php, and it doesn’t contain such logic.

URL of the Page with the Issue

https://developer.wordpress.org/reference/functions/is_single/#more-information

Section of Page with the issue

More Information

Why is this a problem?

If true, inaccurately represents the logic of the function.

Suggested Fix

Adjust or remove the language eto accurately represent the logic.

[github-actions]

Heads up @WordPress/docs-issues-coordinators, we have a new issue open. Time to use 'em labels.