Error appeared when we used $feedname parameter (started with _ ) with add_feed() function

[narenin]

Core Trac: https://core.trac.wordpress.org/ticket/59945#comment:10

Issue Description

Error appeared when we used $feedname parameter (started with _ ) with add_feed() function. This is happening because the _ at the beginning of the feed name is removed in the do_feed function.

This process results in an action name of 'do_feed_' . 'feed2' when $feed is '_feed2'.

Since this is not done in the add_feed function and the action name specified in the add_action function is 'do_feed_' . '_feed2', since the two action names do not match, which resulting in the error indicated in the response.

URL of the Page with the Issue

https://developer.wordpress.org/reference/functions/add_feed/

Section of Page with the issue

We need to mention in the doc that $feedname parameter should not start with _

Why is this a problem?

This process results in an action name of 'do_feed_' . 'feed2' when $feed is 'feed2'. Since this is not done in the add_feed function and the action name specified in the add_action function is 'do_feed' . '_feed2', since the two action names do not match, which resulting in the error indicated in the response.

Suggested Fix

We should mention in the doc that $feedname parameter should not start with _

[github-actions]

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

[atachibana]

@narenin

Below sentence was inserted to More Information section of add_feed() reference, because it can be reflected without code changes.

$feedname parameter should not start with ‘_‘. Please refer #59945.