What argument to use in query_posts to get posts with given letter?

Here: https://pastebin.com/Gjns9jCT

I’ve found a solution: https://pastebin.com/DXduNtKk

I know that your solution is better than this, but what can I do ??

there is a related topic:
https://www.ads-software.com/support/topic/first-letter-posts?replies=5

Well, if that works, your solution is better. Maybe your theme or a plugin is conflicting with my code.

From the print_r array can you show me the [request].

Thank you alchymyth, but the solution posted there didn’t work.

keesiemeijer here is the print_r: https://pastebin.com/VvAdyVHs

i tested both the solution posted by @keesiemeijer in his first reply, as well the one by @michaelh, and both worked in my local test blog.

i therefore support the idea, that: ‘Maybe your theme or a plugin is conflicting with the code.’

Yes, I think so too. I’m using the twentyten theme by the way.

Tested it with twentyten and it works.
try:
– deactivating all plugins to see if this resolves the problem? If this works, re-activate the plugins one by one until you find the problematic plugin(s).

I tried it keesiemeijer, doesn’t work, but don’t worry because I’m using the other solution.

Thank you for your support.

No problem. Glad you found a solution to your problem.

As I said, your solution looks better, mine is just a workaround.