id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc
10544,Specify tags on new posts through the URL,rvenable,,"I want to create links like such: ""Add a new post with tag X"" with a URL like this: wp-admin/post-new.php?new_tag=X

Clicking on the link would take you to the Add New Post admin panel with tag X already added. 

Unfortunately, there is no clean way for a plugin to make this work. The only clean way would be to add a filter on 'terms_to_edit' which adds the new_tag var to the end of the terms. 

Unfortunately, get_terms_to_edit() returns early if there is no post ID and never reaches the necessary filter:


{{{
function get_terms_to_edit( $post_id, $taxonomy = 'post_tag' ) {
	$post_id = (int) $post_id;
	if ( !$post_id )
		return false; // <------ BAILS OUT EARLY HERE

	$tags = wp_get_post_terms($post_id, $taxonomy, array());

	if ( !$tags )
		return false;

	if ( is_wp_error($tags) )
		return $tags;

	foreach ( $tags as $tag )
		$tag_names[] = $tag->name;
	$tags_to_edit = join( ',', $tag_names );
	$tags_to_edit = esc_attr( $tags_to_edit );
	$tags_to_edit = apply_filters( 'terms_to_edit', $tags_to_edit, $taxonomy );   // <-------- THE FILTER I NEED TO HOOK ONTO TO ADD MY NEW TAG

	return $tags_to_edit;
}
}}}

So, a possible solution would be to still apply the filter when bailing out on an empty post_id.
",enhancement,closed,low,,Plugins,2.8.1,minor,duplicate,,