Use regular expressions to replace text with HTML tags starting with a certain character.

Question

I need to convert text into HTML tags, like this:

input: p1: Question 1

output: <h3>Question 1</h3>

or

input: question 1: ¿ question 1?

output: <h3>¿ question 1?</h3>

The detail I don't understand is that I have the following regex rule.

([a-zA-Z])([1-9])(:) (.*)?

And my result is:

<h3> Question 1</h3>
question 1: ¿ question 1?

• In the first example, I need to remove the space generated between

  and Q.

• In the second example, it doesn't work at all for me.

Can you help me see where I'm going wrong in my regex rules?

Demo:

Answer 1

the answer is

([a-zA-Z ])+([1-9])(:)+\s*(.*)