Do u say long-sleeve shirt or long-sleeved shirt? Is there a rule governing when u use the 'd' in d noun sleeve?

I find it absurd that someone asks about correct English, and in so doing, uses that abomination, text-write.

I don't respond to such.

Perhaps someone else in the forum...

Agreed, regarding use of the non-word "u," but isn't stating "I don't respond" in a response also absurd?

"Should I use a colon or semi-colon?"

First, use good manners. You have hijacked someone else's post.