Checking if a string has brackets in them

Help and Feedback Scripting Support
#1

So, I’m making a admin panel, and I have to check if brackets are in them. Here’s an example:
[1DAY] Flood/Caps
I’d have to check if there are brackets in that message, and i need it to return 1DAY then, regardless of the message size.
Please tell me how to do this, thanks, Axolix

1 Like
#2 
local brackets = string.match(str, "%[.+%]")
if brackets then
    return brackets:sub(2, -2)
end

Edit: fixed if check

6 Likes
#3

There are some useful string comparing functions found here: Documentation - Roblox Creator Hub

#4

While the current solution works, there’s a pattern exactly for this kind of purpose, %b. As shown on the lua site, (bottom of page) %b[] matches characters between brackets. (You can do %bxy and it will match anything between x and y, but brackets and parentheses are the most common use.)

3 Likes
#5

I think that the question was asking how to see if the string contains any brackets, not how to get text within brackets.

Correct me if I’m wrong

#6

@RedDuck765

It sounds like he wants the text within the brackets, although I could be wrong. It’ll also return nil if there are no matching pairs of brackets, which would show when there are none.