I learned that when abbreviating a word, such as "tomorrow" as "tom.," we should place a period right after it. But what about when it's a name? For example, which sentence would be correct? (The abbreviated name is "Gavin.")
With the period:
"Gav., what are you doing this Saturday?"
Without the period:
"Gav, what are you doing this Saturday?"
Do abbreviate names need a period after them?