It's now clear that some items need specific code in the stripe pipe handler. An API to implement a custom stripe pipe behavior could be useful.

Sure - let me suggest to wait for #1668 first, that will provide the full list of patterns we try to support at this stage.

I can try to do it, sounds simple.

Should i redo the thing to dispencer behavior?
Hmm, it'll put armor on players.
But it much cleaner, than hardcode.

Or maybe use my new API powers to create handler for things like arrows?
Even nicer, i'll stick with that one.

Man, i'm using the words i not fully understand last time. Just the things i hear in dw's videos with attached emotions to them.

Soo, now, after the thing is fixed and coding standart is applied, i can start doing it, right?
Started in my workspace.

(Poor english, i know)

Looks good to me! It's currently scheduled for 6.1.0, but we can put that back in 6.0.8 as long as the API is not frozen.

Actually, allow me to take that back. I'd like to avoid introducing new API features at this stage, at least when possible. It need to stay still for a few releases before being considered stable enough for freeze. But feel free to make your pull request, I'll create a 6.1 branch to merge.

Do the dispenser support up and down dispensing? Anyway, I'll let you experiment, we can discuss once you reach something you're happy with.

In 1.7.2 - yes.
And i'm on my way of reaching that level of happiness.
Especially i'm happy with my JavaDoc.