Hooks not interpreted

Hi everyone,

I’m facing an issue with hooks. The documentation is totally unclear and not very helpful..

However I’m creating a module named utf_main so technically my hooks must be renamed with utf_main. So I do. I’ve now template_preprocess_utf_main hook.

So, my question is really simple, why the hell no one of my hook (I’ve tried a lot!) aren’t readed by drupal ? I can do whatever I want in theses hooks (event mistakes), drupal just don’t get it, it’s driving me crazy. Oh and yes, I’ve clear the wonderfull Drupal Cache.

Anyone ever encounter this issue ? I litterally can’t work !

Drupal version: 


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