Undefined index notice in wp-includes/l10n.php on line 950

[tditlu]

If WP_CONTENT_URL is set to a root path e.g. http://example.com not http://example.com/wp-content (Which boilerplate frameworks like Bedrock & WordPlate do), the return object from wp_parse_url doesn't include a path value.

Adding a check if path is set in load_script_textdomain after wp_parse_url would solve this issue:

// Added to wp-includes/l10n.php, line 947
if ( empty( $content_url['path'] ) ) {
    $content_url['path'] = '/';
}

Related to these issues:
​https://github.com/WordPress/gutenberg/issues/12670
​https://github.com/wordplate/wordplate/issues/221

[SergeyBiryukov]

#46672 was marked as a duplicate.

[tditlu]

Is there anything I could do to speed up implementing this fix?

[odminstudios]

Added a check if $content_urlpath? exists.
This should solve issues when content_url() returns no paths.

Please use 46387.3.diff​, previous 2 are empty

[Shelob9]

I had this issue on a local site using localhost url. I applied https://core.trac.wordpress.org/attachment/ticket/46387/46387.3.diff from @odminstudios The notice was no longer present after applying patch.

[ocean90]

#46336 includes a fix for this as well.

[ocean90]

In 45685:

I18N: Add support for custom WP_PLUGIN_URL in load_script_textdomain().

Plugins may not be on the same host/path as the rest of the content. To support loading translations for this setup check if the script source matches plugins_url().
Also fixes an undefined index notice when a custom content URL has no path.

Props odminstudios, ocean90.
Fixes #46336, #46387.