Suggestion: Add warning for reserved terms

Hi,

I just spent a while figuring out what the hell was going on when my custom theme starting using index.php for all pages. Turns out I had registered a custom taxonomy of year and it was messing everything up. From the codex, there is a list of reserved terms you aren’t supposed to use. It would be great if this plugin had a simple javascript alert that warned you of the reserved terms when creating a CPT or taxonomy:

attachment
attachment_id
author
author_name
calendar
cat
category
category__and
category__in
category__not_in
category_name
comments_per_page
comments_popup
customize_messenger_channel
customized
cpage
day
debug
error
exact
feed
hour
link_category
m
minute
monthnum
more
name
nav_menu
nonce
nopaging
offset
order
orderby
p
page
page_id
paged
pagename
pb
perm
post
post__in
post__not_in
post_format
post_mime_type
post_status
post_tag
post_type
posts
posts_per_archive_page
posts_per_page
preview
robots
s
search
second
sentence
showposts
static
subpost
subpost_id
tag
tag__and
tag__in
tag__not_in
tag_id
tag_slug__and
tag_slug__in
taxonomy
tb
term
theme
type
w
withcomments
withoutcomments
year

http://codex.wordpress.org/Function_Reference/register_taxonomy#Reserved_Terms

I’ve also had this problem a year or two ago when I tried to use a category name that was the same as a taxonomy.

This could also be a core feature of WordPress – you could get a warning message in the header saying you are using a reserved term for one of your posts/taxonomies etc which was printed if WP_DEBUG was turned on.

https://wordpress.org/plugins/custom-post-type-ui/