Preserve Backslashes in Post Content

There has been an issue with the preservation of backslash characters in post content when duplicating the post, which is due to the wp_insert_post method. wp_insert_post calls sanitize_post_field with a ‘db’ context, which appears to be stripping out the backslash characters.

I found a workaround to this issue, which may or may not be the most ideal. In duplicate_post_admin.php, in the duplicate_post_create_duplicate() method:

Change

'post_content' => $post->post_content,

to use addcslashes() like this

'post_content' => addcslashes($post->post_content, '\\'),

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