get_body_class() adding class "{$post_type}-template-{dir}{file}"

[arrancurran]

When is_singular() and is_page_template() and the template file is inside a directory within the theme folder, get_body_class() adds a class with a missing hyphen between the template directory and the template file name.

post-template.php line 677;

$classes[] = "{$post_type}-template-" . sanitize_html_class( str_replace( '.', '-', $template_slug ) );

Example: post_type is page and template file is, page-templates/my-template-file.php

Result: .page-template-page-templatesmy-template-file-php

Suggested change to post-template.php line 677;

$classes[] = "{$post_type}-template-" . sanitize_html_class( str_replace( array( '.', '/' ), '-', $template_slug ) );

[SergeyBiryukov]

Hi there, welcome to WordPress Trac! Thanks for the report.

Replying to arrancurran:

Example: post_type is page and template file is, page-templates/my-template-file.php

Result: .page-template-page-templatesmy-template-file-php

This was previously discussed in #23470 and improved in [30100] in a way that is similar to the suggestion here.

With the example above, a class like this should also be added​:

.page-template-page-templates-my-template-file

However, the consensus was that the old class needs to remain for backward compatibility and cannot be removed.

[SergeyBiryukov]

This appears to be a duplicate of #41518, let's continue the discussion there.