(Regular Expression) Letter Count

[MechanicalPen]

So long story short, I have this script in my game's message boxes that pauses rendering for a bit after a . ! or ? (A sentence-by-sentence script instead of letter-by-letter) The regular expression that does this is:

Code:

@text.gsub!(/([?.!][^\n\z"])/) { "#{$1}\005[#{$game_system.message.end_delay}]" }

I want to change it so the pause before the next sentence to be based on the length of the sentence. How would I modify this regular expression to capture the sentence length into a variable?