permalinks broken when article name is numeric(if the post id above 1000)

[guigmonteiro]

This is a follow-up to #5305.

The problem on ticket #5305 stil happens if the post have the id above 1000

Steps to reproduce:

Create a post without title(it shout have the id above 1000)
Change the permalink structure to post name (/%postname%/)
Click on the post permalink and try view it

it sends back to the archive page of the post_type instead of the single page of the post

[SergeyBiryukov]

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

To clarify a bit, #5305 addressed the issue from two points:

• [32647] Prevent post slugs that could result in URLs that conflict with date archives. (This only applies to permalink structures containing /%postname%/.)
• [32648] When parsing what appears to be a date archive request, check for a post with a clashing permalink before resolving to the archive.
• Some follow-up fixes: [33261], [33262], [33630].

Changing the permalink structure after a post with a 4-digit numeric slug is already created seems a bit like an edge case, but [32648] should still account for that.

In my testing, I could not reproduce the issue on a clean install so far. My steps:

1. Switch the permalink structure to a one without /%postname/, e.g. /archives/%post_id%.
2. Create a post without title. In my case it got the ID of 1864.
3. Change the permalink structure to /%postname%/.
4. View the post, it show up as expected (single.php template, not the archive page).

Debug Bar plugin shows:

Matched Rewrite Query: year=1864
Query String: name=1864

So ​wp_resolve_numeric_slug_conflicts() seems to work as expected for me, correctly rewriting the date query (year=1864) to a post query (name=1864).

Could you share the ID of the post that doesn't work for you, and the date it was published?