Regex to limit the number of occurrences of a particular character in a string

Question

Is it possible using only regex to limit the number of occurrences of specific characters in a string?

For example, I want to limit the number of occurrences of $ or % or space in a string to 5 occurrences max.

Is this possible?

Answer 1

try this expression. In this case, the character you're limiting is A

/^([^A]*A[^A]*){0,5}$/

http://rubular.com/r/X5iz5dHzgs